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spaces on both sides of the vehicle. When driving at speeds below 30 km/h, you will see the parking symbol as a status indicator in the instrument cluster. Active Parking Assist only displays parking spaces on the front- passenger side as standard. Parking spaces on the driver's side are displayed as soon as the turn signal on the driver's side is activa- ted. To park on the driver's side, you must leave the driver's side turn signal switched on. This must remain switched on until you acknowledge the use of Active Parking Assist by pressing the a button on the multi- function steering wheel. When a parking space has been detected, an arrow towards the right or the left also appears.
Example: detected parking space : Detected parking space on the left ; Parking symbol = Detected parking space on the right Active Parking Assist will only detect parking spaces: Rthat are parallel to the direction of travel Rthat are at least 1.5 m wide Rthat are at least 1.3 m longer than your
vehicle
A parking space is displayed while you are driving past it, and until you are approx- imately 15 m away from it.
Parking G WARNING Active Parking Assist merely aids you by inter- vening actively in the steering. There is a risk of accident if you do not apply the brakes yourself. Always apply the brakes yourself when park- ing and manoeuvring.
i When PARKTRONIC detects obstacles,
Active Parking Assist brakes automatically during the parking process. You are respon- sible for braking in good time.
Active Parking Assist does not support you with parking spaces parallel to the direction of travel if: Rthe parking space is on a kerb stone Rthe system reads the parking space as being blocked, for example by foliage or grass paving blocks
Rthe area is too small for the vehicle to
manoeuvre into
Rthe parking space is bordered by an obsta-
cle, e.g. a tree, a post or a trailer
X Stop the vehicle when the parking symbol
shows the desired parking space in the instrument cluster.
X Vehicles with manual transmission: shift to
reverse gear. Vehicles with automatic transmission: shift into position R. The Start Park Assist? Yes: OK No: % message appears in the multifunction display.
X To cancel the procedure: press the
% button on the multifunction steering wheel or pull away.
or X To park using Active Parking Assist:
press the a button on the multifunction steering wheel. The Park Assist active Accelerate and brake Observe surroundings mes- sage appears in the multifunction display.
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X Release the multifunction steering wheel. X Reverse the vehicle, being ready to brake
at all times. When reversing, drive at a speed below 10 km/h. Otherwise, Active Parking Assist will be cancelled.
i In tight parking spaces, you will achieve the best parking results by backing up as far as possible. When doing so, also observe the PARKTRONIC messages.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before. Manoeuvring may be required in tight park- ing spaces. Vehicles with manual transmission: the Park Assist active Engage forward gear Observe surroundings message appears in the multifunction display. Vehicles with automatic transmission: the Park Assist active Select D Observe surroundings message appears in the mul- tifunction display. X Vehicles with manual transmission: while the vehicle is stationary, shift to first gear. Vehicles with automatic transmission: select transmission position D while the vehicle is stationary. Active Parking Assist immediately steers in the other direction. The Park Assist active Accelerate and brake Observe surroundings mes- sage appears in the multifunction display. i You will achieve the best results by wait- ing for the steering procedure to complete before pulling away.
X Drive forwards and be ready to brake at all
times.
X Stop as soon as PARKTRONIC sounds the continuous warning tone, if not before. Vehicles with manual transmission: the Park Assist active Engage reverse gear Observe surroundings message appears in the multifunction display. Vehicles with automatic transmission: the Park Assist active Select R Observe
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surroundings message appears in the mul- tifunction display. X Additional transmission shifts may be nec-
essary. As soon as the parking procedure is com- plete, the Park Assist switched off mes- sage appears and a warning tone sounds. Active Parking Assist no longer supports you with steering interventions. When Active Parking Assist is finished, you must steer again yourself. PARKTRONIC is still available. X Manoeuvre if necessary. X Always observe the warning messages dis-
played by PARKTRONIC (Y page 199).
Parking tips: RThe way your vehicle is positioned in the parking space after parking is dependent on various factors. These include the posi- tion and shape of the vehicles parked in front and behind it and the conditions of the location. It may be the case that Active Parking Assist guides you too far into a parking space, or not far enough into it. In some cases, it may also lead you across or onto the kerb. If necessary, you should can- cel the parking procedure with Active Park- ing Assist.
RYou can also preselect the forward gear.
The vehicle redirects and does not drive as far into the parking space. Should a gear be changed too early, the parking procedure will be cancelled. A sensible parking posi- tion can no longer be achieved from this position.
Exiting a parking space In order that Active Parking Assist can sup- port you when you exit the parking space: Rthe border of the parking space must be high enough at the front and the rear. A kerb stone is too small, for example.
Rthe border of the parking space must not be too wide, as the position of the vehicle must not exceed an angle of 45° to the
starting position as it is manoeuvred into the parking space.
Ra manoeuvring distance of at least 1.0 m
must be available. X Start the engine. X Switch on the turn signal on the side facing
the street.
X Vehicles with manual transmission:
engage first or reverse gear. Vehicles with automatic transmission: shift the transmission to position D or R. The Start Park Assist? Yes: OK No: % message appears in the multifunction display.
X To cancel the procedure: press the
% button on the multifunction steering wheel or pull away.
or X To exit a parking space using Active
Parking Assist: press the a button on the multifunction steering wheel. The Park Assist active Accelerate and brake Observe surroundings mes- sage appears in the multifunction display. X Release the multifunction steering wheel. X Reverse the vehicle or drive forwards, being ready to brake at all times. Do not exceed a maximum speed of approximately 10 km/h when exiting a parking space. Otherwise, Active Parking Assist will be cancelled.
X Stop when PARKTRONIC sounds the con-
tinuous warning tone, if not before.
X Vehicles with manual transmission: shift to first or reverse gear as required while the vehicle is stationary. Vehicles with automatic transmission: shift to position D or R as required while the vehicle is stationary. Active Parking Assist immediately steers in the other direction. The Park Assist active Accelerate and brake Observe surroundings message appears in the multifunction display.
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i You will achieve the best results by wait- ing for the steering procedure to complete before pulling away. If you reverse after activation, the steering wheel is moved to the straight-ahead posi- tion.
X Drive forwards or reverse the vehicle, being
ready to brake at all times.
X Stop as soon as PARKTRONIC sounds the
continuous warning tone, if not before.
X Drive forwards and reverse as prompted by the PARKTRONIC warning displays, several times if necessary.
Once you have exited the parking space com- pletely, the steering wheel is moved to the straight-ahead position. You hear a tone and the Park Assist switched off message appears in the multifunction display. You will then have to steer and merge into traffic on your own. PARKTRONIC is still available.
Cancelling Active Parking Assist You can cancel Active Parking Assist at any time. X Stop the movement of the multifunction
steering wheel or steer yourself. Active Parking Assist will be cancelled at once. The Park Assist cancelled mes- sage appears in the multifunction display.
or X Press the PARKTRONIC button on the
centre console (Y page 200). PARKTRONIC is switched off and Active Parking Assist is immediately cancelled. The Park Assist cancelled message appears in the multifunction display.
Active Parking Assist is cancelled automati- cally if: Rthe electric parking brake is engaged Rtransmission position P is selected Rparking using Active Parking Assist is no
longer possible
Ryou are driving faster than 10 km/h Ra wheel spins and ESP® intervenes or fails.
The ÷ warning lamp lights up in the instrument cluster.
A warning tone sounds. The parking symbol disappears and the multifunction display shows the Park Assist cancelled mes- sage. When Active Parking Assist is cancelled, you must steer again yourself. If a system malfunction occurs, the vehicle is braked to a standstill. To drive on, depress the accelerator again.
Towing a trailer For vehicles with a trailer tow hitch, the min- imum length for parking spaces is slightly increased. If you have attached a trailer to your vehicle, you should not use Active Parking Assist. Once the electrical connection is established between your vehicle and the trailer, Active Parking Assist is no longer available. PARK- TRONIC is deactivated for the rear area.
Reversing camera General notes
: Reversing camera Reversing camera : is located in the handle strip of the tailgate. Reversing camera : is an optical parking and manoeuvring aid. It uses guide lines to
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show the area behind your vehicle in the Audio/COMAND display. The area behind the vehicle is displayed as a mirror image, as in the rear-view mirror. i The text of messages shown in the
COMAND display depends on the language setting. The following are examples of reversing camera messages in the COMAND display.
Important safety notes The reversing camera is only an aid. It is not a substitute for your attention to the imme- diate surroundings. The responsibility for safe manoeuvring and parking remains with you. Make sure that there are no persons, animals or objects in range while manoeuvring and parking. Under the following circumstances, the reversing camera will not function, or will function in a limited manner: Rif the tailgate is open Rin heavy rain, snow or fog Rat night or in very dark places Rif the camera is exposed to very bright light Rif the area is lit by fluorescent light or LED
lighting (the display may flicker)
Rif there is a sudden change in temperature,
e.g. when driving into a heated garage in winter
Rif the camera lens is dirty or obstructed Rif the rear of your vehicle is damaged. In this case, have the camera position and setting checked at a qualified specialist workshop.
The field of vision and other functions of the reversing camera may be restricted due to additional accessories on the rear of the vehi- cle (e.g. licence plate holder, bicycle rack).
Activating/deactivating the reversing camera
X To activate: make sure that the key is in
position 2 in the ignition lock.
X Make sure that the "Activation by R gear" setting is active in COMAND Online, see the separate COMAND Online operating instructions.
X Engage reverse gear.
The area behind the vehicle is shown with guide lines in the COMAND display.
X To change the function mode for vehi-
cles with trailer tow hitch: using the COMAND controller, select symbol : for the "Reverse parking" function or sym- bol ; for "Coupling up a trailer" (see the separate COMAND Online operating instructions). The symbol of the selected function is high- lighted.
To deactivate: the reversing camera deacti- vates in vehicles with an automatic transmis- sion if you shift the transmission to P or after driving forwards a short distance.
Displays in the Audio/COMAND display The reversing camera may show a distorted view of obstacles or show them incorrectly or not at all. Obstacles are not shown by the reversing camera in the following locations: Rvery close to the rear bumper Runder the rear bumper Rin the area immediately above the tailgate
handle
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! Objects not at ground level may appear to be further away than they actually are, e.g.: Rthe bumper of a parked vehicle Rthe drawbar of a trailer Rthe ball coupling of a trailer tow hitch Rthe rear section of an HGV Ra slanted post Use the guidelines only for orientation. Approach objects no further than the bot- tom-most guideline.
C Bumper D Red guide line at a distance of approx-
imately 0.30 m from the rear of the vehicle
The guide lines are shown when the trans- mission is in position R. The distance specifications only apply to objects that are at ground level.
: White guide line without turning the steer-
ing wheel, vehicle width including the exterior mirrors (static)
; Yellow guide line at a distance of approx- imately 4.0 m from the rear of the vehicle = Red guide line for the vehicle width includ- ing the exterior mirrors, for current steer- ing wheel angle (dynamic)
? Yellow lane marking the course the tyres
will take at the current steering wheel angle (dynamic)
Additional display for vehicles with PARKTRONIC : Front warning display ; Additional PARKTRONIC measurement
operational readiness indicator
= Rear warning display Vehicles with PARKTRONIC: when PARK- TRONIC is operational (Y page 199), addi- tional measurement operational readiness indicator ; appears in the COMAND display. If the PARKTRONIC warning displays are active or light up, warning displays : and = are also active or light up correspondingly in the COMAND display.
Reverse parking function X Make sure that the reversing camera is
activated and the "Reverse parking" func- tion is selected; see the separate operating instructions for the audio system/ COMAND Online. The lane and the guide lines are shown.
A Yellow guide line at a distance of approx- imately 1.0 m from the rear of the vehicle B Vehicle centre axle (marker assistance)
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Reversing straight into a parking space without turning the steering wheel
Reverse perpendicular parking with the steering wheel at an angle
Turning the steering wheel : Red guide line for the vehicle width includ- ing the exterior mirrors, for current steer- ing wheel angle (dynamic)
; Parking space marking X Make sure that the reversing camera is
switched on (Y page 206). The lane and the guide lines are shown.
X Drive past the parking space and bring the
vehicle to a standstill.
X While the vehicle is at a standstill, turn the steering wheel in the direction of the park- ing space until yellow guide line : reaches parking space marking ;.
X Keep the steering wheel in that position
and reverse carefully.
: White guide line without turning the steer-
ing wheel, vehicle width including the exterior mirrors (static)
; Red guide line for the vehicle width includ- ing the exterior mirrors, for current steer- ing wheel angle (dynamic)
= Yellow guide line at a distance of approx- imately 1.0 m from the rear of the vehicle
? Red guide line at a distance of approx-
imately 0.30 m from the rear of the vehicle
X Make sure that the reversing camera is
switched on (Y page 206). The lane and the guide lines are shown.
X With the help of white guide line :, check whether the vehicle will fit into the parking space.
X Using white guide line : as a guide, care- fully reverse until you reach the end posi- tion. Red guide line ? is then at the end of the parking space. The vehicle is almost paral- lel in the parking space.
Reversing with the steering wheel turned : Red guide line for the vehicle width includ- ing the exterior mirrors, for current steer- ing wheel angle (dynamic)
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X Stop the vehicle when it is almost exactly
in front of the parking space. The white lane should be as close to parallel with the parking space marking as possi- ble.
"Coupling up a trailer" function This function is only available on vehicles with a trailer tow hitch and COMAND Online.
Driving to the final position : White guide line at current steering wheel
angle
; Parking space marking X Turn the steering wheel to the centre posi-
tion while the vehicle is stationary.
: Vehicle centre point on the yellow guide line at a distance of approximately 1.0 m from the rear of the vehicle
; Trailer drawbar = Ball coupling This function is only available on vehicles with a trailer tow hitch. X Set the height of trailer drawbar ; so that
it is slightly higher than ball coupling =. X Position the vehicle centrally in front of
trailer drawbar ;.
: Red guide line at a distance of approx-
imately 0.30 m from the rear of the vehicle ; White guide line without turning the steer-
ing wheel
= End of parking space X Reverse carefully until you have reached
the end position. Red guide line : is then at end of parking space =. The vehicle is almost parallel in the parking space.
: Ball coupling ; Red guide line at a distance of approx- imately 0.30 m from the ball coupling
= Trailer drawbar locating aid ? Trailer drawbar A Symbol for the "Coupling up a trailer"
function
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X Select symbol A using the COMAND con-
troller, see COMAND Online. The "Coupling up a trailer" function is selec- ted. The distance specifications now only apply to objects that are at the same level as the ball coupling.
X Reverse carefully, making sure that trailer
drawbar locating aid = points approx- imately in the direction of trailer draw- bar ?.
X Reverse carefully until trailer drawbar ?
reaches red guide line ;.
X Couple up the trailer (Y page 228).
360° camera General notes The 360° camera is a camera system that consists of four cameras. The system evaluates images from the fol- lowing cameras: RReversing camera RFront camera RTwo cameras in the exterior mirrors The cameras cover the immediate surround- ings of the vehicle. The system assists you, for instance when parking or at exits with reduced visibility. You can show pictures from the 360° camera in full-screen mode or in seven different split- screen views on the COMAND display. A split- screen view also includes a top view of the vehicle. This view is calculated from the data supplied by the installed cameras (virtual camera). The seven split-screen views are: Rtop view and image from the reversing cam-
era (130° viewing angle)
Rtop view and image from the front camera (without displaying the maximum steering wheel angle)
Rtop view and enlarged rear view Rtop view and enlarged front view
Rtop view and trailer view (vehicles with
trailer tow hitch)
Rtop view and images from the rear-facing
mirror cameras (rear wheel view)
Rtop view and images from the forward
facing mirror cameras (front wheel view)
i The top view and trailer view are available
for vehicles equipped with a trailer tow hitch.
When the function is active and you shift the transmission from position D or R to N, you see the previous view in the COMAND dis- play. The dynamic guide lines are hidden. When you change between transmission positions D and R, you see the previously selected front or rear view.
Important safety notes The 360° camera is only an aid. It is not a substitute for your attention to the immediate surroundings. The responsibility for safe manoeuvring and parking remains with you. Make sure that there are no persons, animals or objects in range while manoeuvring and parking. The 360° camera may show a distorted view of obstacles, show them incorrectly or not at all. It cannot show objects in the following areas: Runder the front bumper Rvery close to the front bumper Rvery close to the rear bumper Runder the rear bumper Rin close range above the handle on the boot
lid
Rvery close to the exterior mirrors You are always responsible for safety, and must always pay attention to your surround- ings when parking and manoeuvring. This applies to the areas behind, in front of and beside the vehicle. You could otherwise endanger yourself and others.
The 360° camera will not function or will function only in a limited manner: Rif the doors are open Rif the exterior mirrors are folded in Rif the tailgate is open Rin heavy rain, snow or fog Rat night or in very dark places Rif the cameras are exposed to very bright
light
Rif the area is lit by fluorescent light or LED
lighting (the display may flicker)
Rif you drive into a heated garage in the win-
ter and the temperature changes very quickly
Rif the camera lenses are dirty or covered Rif the vehicle components in which the cameras are fitted are damaged. In this event, have the camera position and setting checked at a qualified specialist workshop Do not use the 360° camera in this case. You could otherwise injure others or damage objects when parking the vehicle.
Activation conditions The 360° camera image can be displayed if: Ryour vehicle is equipped with a 360° cam-
era
RCOMAND Online is switched on; see the
separate COMAND Online operating instructions Rthe 360° camera function is activated Activating the 360° camera using the SYS button X Press the W button for longer than 2 seconds; see the separate COMAND Online operating instructions. The following appears depending on whether transmission position D or R is selected:
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Rfull-screen view with image from the
front camera
Rfull-screen view with image from the
reversing camera
Activating the 360° camera using COMAND Online X Press the W button, see the separate COMAND Online operating Instructions. X Select System by turning cVd the COMAND controller and press W to con- firm. X Select 360° camera and press W to con- firm. The following appears depending on whether transmission position D or R is selected: Ra split-screen with top view and the
image from the front camera or
Ra split-screen with top view and the
image from the reversing camera
For further information on the COMAND con- troller; see the separate COMAND Online operating instructions.
Activating the 360° camera using reverse gear You can show images from the 360° camera automatically by engaging reverse gear. X Make sure that the key is in position 2 in the ignition lock. X Make sure that the Activation by R gear setting is active in COMAND Online, see the separate COMAND Online operat- ing instructions.
X To show the 360° camera image: engage
reverse gear. The area behind the vehicle is shown in the COMAND display in split-screen mode: Rvehicle with guide lines Rtop view of the vehicle
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Selecting the split-screen and full screen displays X To switch between split screen views: switch to the line with the vehicle icons by sliding ZV the COMAND controller.
X Turn cVd the COMAND controller and
select one of the vehicle icons. X To switch to full screen mode: select Full screen by turning cVd the COMAND controller and press W to con- firm.
Displays in the COMAND display Important safety notes ! Objects not at ground level may appear to be further away than they actually are, e.g.: Rthe bumper of a parked vehicle Rthe drawbar of a trailer Rthe ball coupling of a trailer tow hitch Rthe rear section of an HGV Ra slanted post Use the guidelines only for orientation. Approach objects no further than the bot- tom-most guideline.
Top view with image from the reversing camera
= Yellow guide line for the vehicle width
including the exterior mirrors, for current steering wheel angle (dynamic)
? Yellow lane marking the course the tyres
will take at the current steering wheel angle (dynamic)
A Yellow guide line at a distance of approx- imately 1.0 m from the rear of the vehicle B Vehicle centre axle (marker assistance) C Red guide line at a distance of approx-
imately 0.30 m from the rear of the vehicle
D Bumper The guide lines are shown when the trans- mission is in position R. The distance specifications only apply to objects that are at ground level. Top view with image from the front cam- era
: Symbol for the split screen setting with
top view and reversing camera image
; Yellow guide line at a distance of approx- imately 4.0 m from the rear of the vehicle
: Symbol for the split screen setting with
top view and front camera image
; Yellow guide line at a distance of approx- imately 4.0 m from the front of the vehicle
= Yellow guide line for the vehicle width
including the exterior mirrors, for current steering wheel angle (dynamic)
? Yellow lane marking the course the tyres
will take at the current steering wheel angle (dynamic)
A Yellow guide line at a distance of approx- imately 1.0 m from the front of the vehicle
B Red guide line at a distance of approx-
imately 0.30 m from the front of the vehi- cle
Top view and enlarged rear view
: Symbol for the split screen setting with
top view and reversing camera image enlarged
; Red guide line at a distance of approx-
imately 0.30 m from the rear of the vehicle
This view assists you in estimating the dis- tance to the vehicle behind you. i This setting can also be selected as an
enlarged front view.
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Top view with image from the mirror cam- eras
: Symbol for the top view and forward-
facing mirror camera setting
; Yellow guide line for the vehicle width
including the exterior mirror (right side of vehicle)
= Yellow guide line for the vehicle width
including the exterior mirror (left side of vehicle)
Top view with trailer view
: Symbol for the trailer view setting ; Trailer drawbar locating aid = Red guide line at a distance of approx- imately 0.30 m from the ball coupling
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Images displayed with PARKTRONIC display
Example: full-screen view with PARKTRONIC dis- play : Symbol for the full-screen setting with the
reversing camera image
If the vehicle is equipped with PARKTRONIC and the function is activated (Y page 200), warning displays ; in the COMAND display are also active or light up accordingly. PARKTRONIC appears as follows: Ras red or yellow brackets around the vehi- cle symbol in top view in split-screen mode or
Rat the bottom right as red or yellow brack- ets around the vehicle symbol in full-screen mode
i Full-screen mode can also be selected as
front view.
Stopping the 360° camera display As soon as your vehicle exceeds a speed of 30 km/h with the function activated, the function switches off. The previous display appears on the COMAND display. You can also switch the display by selecting the & symbol in the display and pressing W the COMAND controller to confirm.
ATTENTION ASSIST Important safety notes ATTENTION ASSIST is only an aid. It cannot always detect fatigue or lapses in concentra- tion until too late or not at all. The system is not a substitute for a well-rested and atten- tive driver. ATTENTION ASSIST helps you during long, monotonous journeys such as on motorways and trunk roads. It is active in the 80 km/h to 180 km/h range. If ATTENTION ASSIST detects typical indica- tors of fatigue or increasing lapses in con- centration on the part of the driver, it sug- gests taking a break. ATTENTION ASSIST assesses your level of fatigue or lapses in concentration by taking the following criteria into account: Ryour personal driving style, e.g. steering
characteristics
Rjourney-related parameters, e.g. time of
day, length of journey
The functionality of ATTENTION ASSIST is restricted, and warnings may be delayed or not occur at all: Rif the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
Rif there is a strong side wind Rif you have adopted a sporty driving style with high cornering speeds or high rates of acceleration
Rif you are predominantly driving slower than 80 km/h or faster than 180 km/h
Rif you are currently using COMAND Online or making a telephone call with COMAND Online
Rif the time has been set incorrectly Rin active driving situations, such as when you change lanes or change your speed
Warning and display messages in the multifunction display X Activate ATTENTION ASSIST using the on-
board computer (Y page 249).
If ATTENTION ASSIST is active, you will be warned no sooner than 20 minutes after your journey has begun. You then hear an inter- mittent warning tone twice and the Atten‐ tion Assist: Drowsiness detected mes- sage appears in the multifunction display. X If necessary, take a break. X Press the a button to confirm the mes-
sage.
On long journeys, take regular breaks in good time to allow yourself to rest properly. If you do not take a break, you will be warned again after 15 minutes at the earliest. This will only happen if ATTENTION ASSIST still detects typical indicators of fatigue or increasing lap- ses in concentration. ATTENTION ASSIST is reset and starts assessing your tiredness again when you con- tinue your journey if: Ryou switch off the engine Ryou take off your seat belt and open the
driver's door, e.g. for a change of drivers or to take a break
The assistance graphic shows the é sym- bol when ATTENTION ASSIST is deactivated (Y page 248).
Speed Limit Assist General notes Speed Limit Assist shows you detected speed limits in the multifunction display. Data from the navigation system is also used for this purpose. If a traffic sign indicating a speed limit or the end of a speed limit is detected, it is shown in the multifunction display. If Speed Limit Assist does not detect any traffic signs, the speed limit from the digital road map is taken and shown in the display.
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Speed Limit Assist detects the traffic signs with a camera attached behind the top of the windscreen.
: Speed Limit Assist camera
Important safety notes Speed Limit Assist is only an aid and does not always detect traffic signs specifying the maximum permissible speed. Traffic signs always have priority over the Speed Limit Assist display. The system may be impaired or may not func- tion if: Rthere is poor visibility, e.g. due to snow,
rain, fog or spray
Rthere is glare, e.g. from the sun or from
oncoming traffic
Rthe windscreen is dirty, misted up or cov- ered, for instance by a sticker, in the vicinity of the camera
Rthe traffic signs are covered, for instance
by dirt, snow or trees
Rthe traffic signs are poorly illuminated Rthere are ambiguous traffic signs, for
instance near roadworks or on multi-lane roads
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Information in the multifunction display
: Speed Limit Assist is available and
switched on
; Maximum permitted speed (example) = Maximum permitted speed for vehicles
for which the restriction in the additional sign is relevant (example) ? Additional character in fog Briefly showing detected traffic signs in the multifunction display X Activate the Speed Limit Assist warning
function using the on-board computer (Y page 248). A traffic sign indicating a speed limit or the end of a speed limit : appears in the mul- tifunction display for around five seconds as soon as it is detected. Any other infor- mation in the multifunction display is hid- den for this period.
Permanently showing detected traffic signs in the multifunction display X Display Speed Limit Assist using the on-
board computer (Y page 248).
X Display the assistance graphic using the
on-board computer (Y page 248). A traffic sign indicating a speed limit or the end of a speed limit appears in the multi- function display as soon as it is detected. Traffic sign indicating a speed limit : is gen- erally displayed until: Ra traffic sign indicating the end of the speed
limit is detected. Ryou make a turn.
Ryou leave or enter a town. Rthe road type changes (e.g. motorway,
country road).
Ryou have travelled a certain minimum dis- tance without the traffic sign being repea- ted or detected again.
i You can also activate Speed Limit Assist using COMAND Online. The maximum per- missible speed is shown in the COMAND display; see the COMAND Online operating instructions.
Lane Tracking package General notes The Lane Tracking package consists of Blind Spot Assist (Y page 216) and Lane Keeping Assist (Y page 218).
Blind Spot Assist General notes Blind Spot Assist uses a radar sensor system to monitor the areas on both sides of your vehicle. It supports you from speeds of 30 km/h. A warning display in the exterior mirrors draws your attention to vehicles detected in the monitored area. If you then switch on the corresponding turn signal to change lane, you will also receive an optical and audible collision warning. For monitoring, Blind Spot Assist uses sensors in the rear bumper. For Blind Spot Assist to assist you when driv- ing, the radar sensor system must be opera- tional. Important safety notes Blind Spot Assist is only an aid. It may fail to detect some vehicles and is no substitute for attentive driving. Always ensure that there is sufficient distance to the side for other road users and obstacles.
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G WARNING Blind Spot Assist does not react to vehicles: Rovertaken too closely on the side, placing
them in the blind spot area
Rwhen the difference in the speed of approach and overtaking is too great
As a result, Blind Spot Assist cannot warn drivers in these situations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and maintain a safe distance at the side of the vehicle.
Monitoring range of the sensors In particular, the detection of obstacles can be impaired in the case of: Rdirt on the sensors or the sensors are
obscured
Rpoor visibility, e.g. due to fog, heavy rain,
snow or spray
Rnarrow vehicles, e.g. motorcycles or bicy-
cles
Rvery wide lanes Rnarrow lanes Rvehicles not driving in the middle of their
lane
Rbarriers or other road boundaries Vehicles in the monitoring range are then not indicated.
Blind Spot Assist monitors the area up to 3.0 m behind your vehicle and directly next to your vehicle, as shown in the diagram. If the lanes are narrow, vehicles driving in the lane beyond the lane next to your vehicle may be indicated, especially if the vehicles are not driving in the middle of their lane. This may be the case if there are vehicles at the edge of their lane nearest your vehicle. Due to the nature of the system: Rwarnings may be issued in error when driv- ing close to crash barriers or similar solid lane borders.
Rwarnings may be interrupted when driving
alongside long vehicles, for example lor- ries, for a prolonged time.
The two radar sensors for Blind Spot Assist are integrated into the sides of the rear bumper. Make sure that the bumper is free of dirt, ice or slush in the vicinity of the sensors. The sensors must not be covered, for exam- ple by cycle racks or overhanging loads. Fol- lowing a severe impact or in the event of dam- age to the bumpers, have the function of the sensors checked at a qualified specialist workshop. Blind Spot Assist may otherwise not work properly. Indicator and warning display Blind Spot Assist is not active at speeds below approximately 30 km/h. Vehicles in the mon- itoring range are then not indicated.
: Yellow indicator lamp/red warning lamp If Blind Spot Assist is activated, indicator lamp : in the exterior mirrors lights up yel-
218 Driving systems
low up to a speed of 30 km/h. At speeds above 30 km/h, the indicator lamp goes out and Blind Spot Assist is operational. If a vehicle is detected within the monitoring range of Blind Spot Assist at speeds above 30 km/h, warning lamp : on the corre- sponding side lights up red. This warning always occurs when a vehicle enters the blind spot monitoring range from behind or from the side. When you overtake a vehicle, the warning only occurs if the difference in speed is less than 12 km/h. The yellow indicator lamp goes out if reverse gear is engaged. Blind Spot Assist is then deactivated. The brightness of the indicator/warning lamps is adjusted automatically according to the ambient light. Collision warning If a vehicle is detected in the monitoring range of Blind Spot Assist and you switch on the corresponding turn signal, a double warning tone sounds. Red warning lamp : flashes. If the turn signal remains on, detected vehicles are indicated by the flashing of red warning lamp :. There are no further warning tones. Activating Blind Spot Assist X Make sure that Blind Spot Assist
(Y page 249) is activated in the on-board computer.
X Turn the key to position 2 in the ignition
lock. Warning lamps : in the exterior mirrors light up red for approximately 1.5 seconds and then turn yellow.
Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting. Blind Spot Assist is then deactivated. The indicator lamp lights up yel- low in the exterior mirrors and the Blind Spot Assist currently unavailable
See Owner's Manual message appears in the multifunction display. i You can deactivate the indicator lamps in
the exterior mirrors. To do so, deactivate Blind Spot Assist if: Rthe key is in position 2 in the ignition lock Rthe engine is not running Rthe electrical connection to the trailer
has been established
Lane Keeping Assist General notes Lane Keeping Assist monitors the area in front of your vehicle by means of a cam- era :, at the top of the windscreen. Lane Keeping Assist detects lane markings on the road and warns you before you leave your lane unintentionally.
: Active Lane Keeping Assist camera If you select km on the on-board computer in the Display unit Speed-/odometer func- tion (Y page 250), Lane Keeping Assist is active starting at a speed of 60 km/h. If the miles display unit is selected, the assistance range begins at 40 mph. A warning may be given if a front wheel passes over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for up to 1.5 seconds. Important safety notes If you fail to adapt your driving style, Lane Keeping Assist can neither reduce the risk of an accident nor override the laws of physics.
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Lane Keeping Assist cannot take into account road, weather or traffic conditions. Lane Keeping Assist is only an aid. You are respon- sible for the distance to the vehicle in front, for vehicle speed, for braking in good time, and for staying in the lane. G WARNING Lane Keeping Assist cannot always clearly identify lane markings. In these cases, Lane Keeping Assist may: Rgive an unnecessary warning Rnot give a warning There is a risk of an accident. Always pay particular attention to the traffic situation and keep in lane, especially if Lane Keeping Assist alerts you. G WARNING The Lane Keeping Assist warning does not return the vehicle to the original lane. There is a risk of an accident. Always steer, apply the brakes or accelerate the vehicle yourself, especially if Lane Keep- ing Assist alerts you.
Lane Keeping Assist does not keep your vehi- cle in its lane. The system may be impaired or may not func- tion if: Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic, the sun or reflection from other vehicles (e.g. if the road surface is wet)
Rthe windscreen is dirty, misted up, dam- aged or covered, for instance by a sticker in the vicinity of the camera
Rno, or several, unclear lane markings are
present for one lane, e.g. in a construction area
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be detected
Rthe lane markings change quickly, e.g. lanes branch off, cross one another or merge
Rthe road is narrow and winding Rthere are highly variable shade conditions
on the road
Activating Lane Keeping Assist X Activate Lane Keeping Assist using the on- board computer; to do so, select Stand‐ ard or Adaptive(Y page 249). If you drive at speeds above 60 km/h and lane markings are detected, the lines in the assistance graphic display (Y page 248) are shown in green. Lane Keeping Assist is ready for use.
Standard If Standard is selected, no warning vibration occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®. Adaptive When Adaptive is selected, no warning vibra- tion occurs if: Ryou have switched on the turn signals. In this case, the warnings are suppressed for a certain period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown. Ryou brake hard. Ryou steer actively, e.g. swerve to avoid an
obstacle or change lane quickly.
Ryou cut the corner on a sharp bend. In order that you are warned only when nec- essary and in good time if you cross the lane marking, the system recognises certain con- ditions and warns you accordingly.
220 Driving systems
The warning vibration occurs earlier if: Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a motor-
way.
Rthe system recognises solid lane markings. The warning vibration occurs later if: Rthe road has narrow lanes. Ryou cut the corner on a bend. Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting.
Active Driving Assistance package General notes The Active Driving Assistance package con- sists of DISTRONIC PLUS (Y page 188), Active Blind Spot Assist (Y page 220) and Active Lane Keeping Assist (Y page 222).
Active Blind Spot Assist General notes Active Blind Spot Assist uses a radar sensor system to monitor the area to the sides of your vehicle which are behind the driver. A warning display in the exterior mirrors draws your attention to vehicles detected in the monitored area. If you then switch on the cor- responding turn signal to change lanes, you will also receive an optical and audible colli- sion warning. If a risk of side impact is detec- ted, corrective braking may help you avoid a collision. To support the course-correcting brake application, Active Blind Spot Assist also uses the forward-facing radar sensor sys- tem. The space available in the direction of travel as well as to the side of the vehicle is evaluated before a course-correcting braking application is performed.
Active Blind Spot Assist supports you from a speed of approximately 30 km/h. For Active Blind Spot Assist to assist you when driving, the radar sensor system must be operational. Important safety notes Active Blind Spot Assist is only an aid. It does not detect all traffic situations and road users and is no substitute for attentive driving. Always ensure that there is sufficient dis- tance to the side for other road users and obstacles. G WARNING Active Blind Spot Assist does not react to vehicles: Rovertaking too closely on the side, placing
them in the blind spot area
Rif the difference in the speed of approach
and overtaking is too great
As a result, Active Blind Spot Assist may nei- ther give warnings nor intervene in such sit- uations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and maintain a safe distance at the side of the vehicle.
Monitoring range of the sensors G WARNING Active Blind Spot Assist does not detect all traffic situations and road users. There is a risk of an accident. Always make sure that there is sufficient dis- tance to the side for other traffic or obstacles.
In particular, the detection of obstacles can be impaired in the case of: Rdirt on the sensors or the sensors are
obscured
Rpoor visibility, e.g. due to rain, snow or
spray
Vehicles in the monitoring range are then not indicated.
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221
Active Blind Spot Assist may not detect nar- row vehicles, such as motorcycles or bicy- cles, or may only detect them too late.
the bumpers, have the function of the sensors checked at a qualified specialist workshop. Blind Spot Assist may otherwise not work properly. Indicator and warning display Active Blind Spot Assist is not active at speeds below approximately 30 km/h. Vehi- cles in the monitoring range are then not indi- cated.
Active Blind Spot Assist monitors the area up to three metres behind your vehicle and directly next to your vehicle as shown in the diagram. For this purpose, Active Blind Spot Assist uses radar sensors in the rear bumper. If the lanes are narrow, vehicles driving in the lane beyond the lane next to your vehicle may be indicated, especially if the vehicles are not driving in the middle of their lane. This may be the case if there are vehicles at the edge of their lane nearest your vehicle. Due to the nature of the system: Rwarnings may be issued in error when driv- ing close to crash barriers or similar solid lane borders.
Rwarnings may be interrupted when driving
alongside long vehicles, for example lor- ries, for a prolonged time.
Two Active Blind Spot Assist radar sensors are integrated into the front and rear bumpers respectively. An additional radar sensor is located behind the cover in the radiator grille. Make sure that the sensors and the areas around them are free of dirt, ice or slush. The rear sensors must not be covered, e.g. by bicycle racks or overhanging loads. Following a severe impact or in the event of damage to
: Yellow indicator lamp/red warning lamp If Active Blind Spot Assist is switched on, indicator lamp : in the exterior mirrors lights up yellow up to a speed of 30 km/h. At speeds above 30 km/h, the indicator lamp goes out and Active Blind Spot Assist is operational. If a vehicle is detected within the monitoring range of Blind Spot Assist at speeds above 30 km/h, warning lamp : on the corre- sponding side lights up red. This warning always occurs when a vehicle enters the blind spot monitoring range from behind or from the side. When you overtake a vehicle, the warning only occurs if the difference in speed is less than 12 km/h. The yellow indicator lamp goes out if reverse gear is engaged. Active Blind Spot Assist is then no longer active. The brightness of the indicator/warning lamps is adjusted automatically according to the ambient light.
222 Driving systems
Visual and acoustic collision warning When you switch on the turn signals to change lanes and a vehicle is detected in the side monitoring range, you receive a visual and acoustic collision warning. You then hear a double warning tone and red warning lamp : flashes. If the turn signal remains on, detected vehicles are indicated by the flash- ing of red warning lamp :. There are no fur- ther warning tones. Course-correcting brake application G WARNING A course-correcting brake application cannot always prevent a collision. There is a risk of an accident. Always steer, brake or accelerate yourself, especially if Active Blind Spot Assist warns you or makes a course-correcting brake appli- cation. Always maintain a safe distance at the sides.
In very rare cases, the system may make an inappropriate brake application. An inappro- priate brake application may be interrupted at any time if you steer slightly in the opposite direction or accelerate. If Active Blind Spot Assist detects a risk of a side impact in the monitoring range, a course- correcting brake application is carried out. This is designed to help you avoid a collision. The course-correcting brake application is available in the speed range between 30 km/h and 200 km/h. If a course-correcting brake application occurs, red warning lamp : flashes in the exterior mirror and the following is shown in the multifunction display, for example:
Example: vehicles with automatic transmission
Either a very slight course-correcting brake application, or none at all, may occur if: Rthere are vehicles or obstacles, e.g. crash
barriers, on both sides of your vehicle
Ra vehicle approaches too closely on the
side
Ryou have adopted a sporty driving style with
high cornering speeds
Ryou brake or accelerate decisively Ra driving safety system intervenes, such as
ESP® or PRE-SAFE® Brake
RESP® is deactivated Rthe Off-road program is activated Ra loss of tyre pressure or a defective tyre is
detected
Activating Active Blind Spot Assist X Make sure that Active Blind Spot Assist (Y page 249) is activated in the on-board computer.
X Turn the key to position 2 in the ignition
lock. Warning lamps : in the exterior mirrors light up red for approximately 1.5 seconds and then turn yellow.
Towing a trailer If you attach a trailer, make sure that you have correctly established the electrical connec- tion. This can be accomplished by checking the trailer lighting. Active Blind Spot Assist is then deactivated. The indicator lamp lights up yellow in the exterior mirrors and the Active Blind Spot Assist currently unavail‐ able See Owner's Manual message appears in the multifunction display.
Active Lane Keeping Assist General notes Active Lane Keeping Assist monitors the area in front of your vehicle by means of cam- era : mounted at the top of the windscreen. Active Lane Keeping Assist detects lane markings on the road and warns you before you leave your lane unintentionally. If you do
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223
not react to the warning, a lane-correcting application of the brakes can bring the vehicle back into the original lane.
: Active Lane Keeping Assist camera If you select km in the Display unit Speed-/odometer: function on the on-board computer(Y page 250), Active Lane Keeping Assist is activated starting at a speed of 60 km/h. If the miles display unit is selected, the assistance range begins at 40 mph. Important safety notes If you fail to adapt your driving style, Active Lane Keeping Assist can neither reduce the risk of an accident nor override the laws of physics. Lane Keeping Assist cannot take into account road, weather or traffic conditions. Lane Keeping Assist is only an aid. You are responsible for the distance to the vehicle in front, for vehicle speed, for braking in good time, and for staying in the lane. Active Lane Keeping Assist cannot continu- ously keep your vehicle in its lane. G WARNING Active Lane Keeping Assist cannot always clearly detect lane markings. In such cases, Active Lane Keeping Assist can: Rgive an unnecessary warning and then
make a course-correcting brake application to the vehicle
Rneither give a warning nor intervene There is a risk of an accident.
Always pay particular attention to the traffic situation and keep within the lane, especially if Active Lane Keeping Assist alerts you. Ter- minate the intervention in a non-critical driv- ing situation.
The system may be impaired or may not func- tion if: Rthere is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to snow, rain, fog or spray
Rthere is glare, e.g. from oncoming traffic, the sun or reflection from other vehicles (e.g. if the road surface is wet)
Rthe windscreen is dirty, misted up, dam- aged or covered, for instance by a sticker in the vicinity of the camera
Rno, or several, unclear lane markings are
present for one lane, e.g. in a construction area
Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be detected
Rthe lane markings change quickly, e.g. lanes branch off, cross one another or merge
Rthe road is narrow and winding Rthere are highly variable shade conditions
on the roadway
Rno vehicle is detected in the adjacent lane
and there are broken lane markings
Warning vibration through the steering wheel A warning may be given if a front wheel passes over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for up to 1.5 seconds. In order that you are warned only when nec- essary and in good time if you cross the lane marking, the system recognises certain con- ditions and warns you accordingly.
224 Driving systems
The warning vibration occurs earlier if: Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a motor-
way.
Rthe system recognises solid lane markings. The warning vibration occurs later if: Rthe road has narrow lanes. Ryou cut the corner on a bend. Lane-correcting brake application G WARNING A lane-correcting brake application cannot always bring the vehicle back into the original lane. There is a risk of an accident. Always steer, brake or accelerate yourself, especially if Active Lane Keeping Assist warns you or makes a lane-correcting brake appli- cation. G WARNING Active Lane Keeping Assist does not detect traffic conditions or road users. In very rare cases, the system may make an inappropriate brake application, e.g. after intentionally driv- ing over a solid lane marking. There is a risk of an accident. An inappropriate brake application may be interrupted at any time if you steer slightly in the opposite direction. Always make sure that there is sufficient distance to the side for other traffic or obstacles.
If you leave your lane under certain circum- stances, the vehicle will brake briefly on one side. This is intended to help you return the vehicle to the original lane. This function is available in the range between 60 km/h and 200 km/h. A lane-correcting brake application can only be made after driving over a solid, recognis- able lane marking. Before this, a warning must have been issued by means of intermit- tent vibration through the steering wheel. In addition, a lane with lane markings on both
sides must be recognised. The brake applica- tion also slightly reduces driving speed. If a lane-correcting brake application occurs, the following appears in the multifunction dis- play:
Example: vehicles with automatic transmission i A further lane-correcting brake applica- tion can only occur after your vehicle has returned to the original lane.
No lane-correcting brake application occurs
