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system cannot perform its intended protec- tive function in the event of an accident, and could lead to injuries. G WARNING Do not place electronic devices on the front- passenger seat, e.g.: Rlaptops, when switched on Rmobile phones Rcards with transponders, e.g. ski passes or
access cards
Signals from electronic equipment can cause interference in the automatic child seat rec- ognition sensor system. This can lead to a system malfunction. This may cause the 4 PASSENGER AIRBAG OFF indicator lamp to light up without there being a child seat with transponders for automatic child seat recognition fitted. The front-passenger airbag will not then deploy during an accident. It is also possible that the 6 SRS warning lamp lights up and/or the 4 PASSENGER AIRBAG OFF indicator lamp does not light up briefly when you turn the key in the ignition lock to position 2.
Children in the vehicle
53
i If the front-passenger front airbag is dis- abled by the automatic child seat recogni- tion, the following remain enabled on the front-passenger side: Rthe sidebag Rthe windowbag Rthe belt tensioner
ISOFIX child seat securing system for the rear seats G WARNING A child restraint system secured by the ISOFIX child seat securing system does not provide sufficient protection for children weighing more than 22 kg. For this reason, do not secure children weighing more than 22 kg in a child restraint system secured by the ISOFIX child seat securing system. If the child weighs more than 22 kg, secure the child restraint system with the vehicle seat belt as well. In addition, when fitting a child restraint system, be sure to observe the manufacturer's instal- lation instructions and the instructions for correct use of the child restraint system. G WARNING The child restraint system cannot perform its protective function if it is not correctly fitted to a suitable vehicle seat. The child cannot be restrained in the event of an accident, heavy braking or sudden changes of direction. The child could be seriously or even fatally injured. For this reason, when fitting a child restraint system, be sure to observe the manufactur- er's installation instructions and the instruc- tions for correct use of the child restraint sys- tem. For safety reasons, when installing child restraint systems on the outer rear seats, only use child restraint systems with the ISOFIX child seat securing system, which are spe- cially tested and approved for Mercedes-Benz vehicles. An incorrectly fitted child restraint system could come loose and seriously or even fatally
If the front-passenger seat of your vehicle does not have automatic child seat recogni- tion, this is indicated by a special sticker. The sticker is affixed to the side of the dashboard on the front-passenger side. The sticker is visible when you open the front-passenger door. Vehicles without automatic child seat recog- nition on the front-passenger seat: if you turn the key to position 2 in the ignition lock, the PASSENGER AIRBAG OFF 4 indicator lamp lights up briefly. It has no function, how- ever, and does not indicate that the front- passenger seat is equipped with automatic child seat recognition.
The front-passenger seat sensor system for child restraint systems detects whether a special Mercedes-Benz child seat with a transponder for automatic child seat recog- nition has been fitted. In this case, 4
PASSENGER AIRBAG OFF indicator lamp : lights up. The front-passenger front airbag is disabled.54
Children in the vehicle
injure the child or other vehicle occupants. When fitting the child restraint system, always make sure that it is engaged correctly in the securing rings on both sides. To ensure that the child restraint system can perform its protective function as intended, the backrest of the outer seat in the second row must be in the upright position. G WARNING Please note that if child restraint systems, or their retaining systems, are damaged or sub- jected to a load in an accident, they may not be able to provide their protective function. This could result in serious or even fatal inju- ries to the secured child in the event of an accident, heavy braking or a sudden change in direction. For this reason, have child restraint systems and their anchorages which have been dam- aged or subjected to a load in an accident checked immediately at a qualified specialist workshop.
Securing rings for the outer seats in the second row
Securing rings for the third row of seats Securing rings : and ; for two ISOFIX child restraint systems can be found on the left and right: Ron the rear seat backrests of the outer
seats in the second row
Ron the backrests of the seats in the third
row of seats.
Before installing an ISOFIX child restraint sys- tem in the second row: X Move the rear seat backrests in the second
row to an upright position (Y page 104). X Install the ISOFIX child restraint system. Comply with the manufacturer's instruc- tions when installing the ISOFIX child restraint system.
Top Tether Top Tether anchorages
Children in the vehicle
55
Ensure that: RTop Tether hook A is hooked into Top
Tether anchorage ? as shown. RTop Tether belt B is not twisted. RTop Tether belt B is routed between rear seat backrest ; and luggage compart- ment cover : if luggage compartment cover is fitted.
RTop Tether belt B is routed between the rear seat backrest ; and the safety net if the safety net is fitted.
X Tension Top Tether belt B. Comply with the manufacturer's installation instruc- tions when doing so.
X Move head restraint = back down again slightly if necessary (Y page 103). Make sure that you do not interfere with the cor- rect routing of Top Tether belt B.
Top Tether provides an additional connection between the child restraint system secured with ISOFIX and the rear seat. It helps reduce the risk of injury even further. The Top Tether anchorages for the second row of seats are located on the rear of both outer rear seat backrests. For the third row of seats, use the lashing eyelets in the luggage compartment floor. X Move head restraint = upwards. X Fit the ISOFIX child restraint system with Top Tether. Comply with the manufactur- er's installation instructions when doing so.
X Route Top Tether belt B under head
restraint = between the two head restraint bars.
X Guide Top Tether belt B downwards
between luggage compartment cover : and rear seat backrest ;.
X Hook Top Tether hook A of Top Tether belt
B into Top Tether anchorage ?.
56
Children in the vehicle
Problems with automatic child seat recognition
Problem The 4 PASSENGER AIRBAG OFF indicator lamp on the centre con- sole is lit.
Possible causes/consequences and M Solutions A special Mercedes-Benz child seat with a transponder for auto- matic child seat recognition has been fitted to the front-passenger seat. The front-passenger front airbag has therefore been disabled as desired.
The 4 PASSENGER AIRBAG OFF indicator lamp on the centre con- sole is lit. or The 6 warning lamp lights up and/or the 4 PASSENGER AIR- BAG OFF indicator lamp does not light up briefly when you switch the ignition on.
G WARNING There is no child seat fitted to the front-passenger seat. Automatic child seat recognition is malfunctioning. There is a risk of injury. X Remove electronic equipment from the front-passenger seat,
e.g.: Rlaptop Rmobile phone Rcards with transponders, such as ski passes or access cards
If the 4 PASSENGER AIRBAG OFF indicator lamp is still lit: X Visit a qualified specialist workshop.
Suitable positioning of the child restraint systems X If you fit a child restraint system to the front-passenger seat, position the front- passenger seat in its rearmost position.
X If you install a child restraint system on the rear seat on the second row, move the rear seat backrests in the second row to an upright position.
Key to the letters used in the following table: X Seat which is unsuitable for children in
this weight category.
U Suitable for child restraint systems in the
"Universal" category that are approved for use in this weight category.
L Suitable for child restraint systems as rec-
ommended; see the following table of "Recommended child restraint systems" (Y page 58).
Front-passenger seat Front- Weight cat- egories passenger front air- bag is not disabled.
Category 0: up to 10 kg Category 0+: up to 13 kg Category I: 9 to 18 kg Category II: 15 to 25 kg Category III: 22 to 36 kg
Front- passenger front air- bag is disa- bled.
Vehicles with automatic child seat recog- nition in the front-passenger seat: a "Uni- versal" category child restraint system with a transponder for automatic child seat recog- nition must be fitted when the front- passenger airbag is disabled. The 4
PASSENGER AIRBAG OFF indicator lamp must be lit. Rear seats Weight cat- egoriesCentre
Third row of seats, left and right
Category 0: up to 10 kg Category 0+: up to 13 kg Category I: 9 to 18 kg Category II: 15 to 25 kg Category III: 22 to 36 kg
"Universal" category child restraint systems can be recognised by their orange approval label.
ISO/R1
ISO/R1
ISO/R2
ISO/R3Example: approval label on the child restraint sys- tem
Children in the vehicle
57
Suitability of the rear seats for attaching ISOFIX child restraint systems Key to the letters used in the following table:
ISOFIX position that is not suitable for ISOFIX child restraint systems in this weight category and/or size category. IUF Suitable for forward-facing ISOFIX child
restraint systems that belong to the "Universal" category which are approved for use in this weight category. Suitable for ISOFIX child restraint sys- tems as recommended; see the follow- ing table of "Recommended child restraint systems" (Y page 58).
IL
Carry-cot weight category Size cate- gory
Equipment Rear seat,
ISO/L1
ISO/L2Weight category 0: up to 10 kg, up to approximately 6 months Equipment Size cate- gory
Weight category 0+: up to 13 kg, up to approximately 15 months Equipment Size cate- gory
left and right
Rear seat, left and right IL
Rear seat, left and right IL IL IL
58
Children in the vehicle
Weight category I: 9 to 18 kg, approx- imately 9 months to 4 years Size cate- gory
Equipment
B1
ISO/R2
ISO/R3
ISO/F2
ISO/F2X ISO/F3Rear seat, left and right IL IL IUF IUF IUF
Recommended child restraint systems When installing a child restraint system with- out a transponder for automatic child seat recognition on the front-passenger seat: X Move the front-passenger seat to its high-
est and rearmost position.
Weight category 0: up to 10 kg, up to approximately 6 months Manufacturer Type Approval number (E1 ...) Order number (A 000 ...) Automatic child seat recognition
Britax Römer BABY SAFE PLUS 03 301146
04 301146
970 10 00Yes
Weight category 0+: up to 13 kg, up to approximately 15 months Manufacturer Type Approval number (E1 ...)
Britax Römer BABY SAFE PLUS 03 301146
04 301146Order number (A 000 ...) Automatic child seat recognition
970 10 00
Yes
Britax Römer Britax Römer
DUO PLUS 03 301133
04 301133Weight category I: 9 to 18 kg, approx- imately 9 months to 4 years Manufac- turer Type Approval number (E1 ...) Order num- ber (A 000 ...) Automatic child seat recognition
DUO PLUS 03 301133
04 301133970 11 00
970 16 00
Yes
No
Britax Römer Britax Römer
KID 03 301148
04 301148Weight category II/III: 15 to 36 kg, approximately 4 to 12 years Manufac- turer Type Approval number (E1 ...) Order num- ber (A 000 ...) Automatic child seat recognition
970 12 00
Yes
No
KID 03 301148
04 301148970 17 00
Suggested "Universal" category ISOFIX child restraint systems:
Carry-cot weight category Size categories F, G Manufacturer – Type – Approval number – (E1 ...) Order number Automatic child seat recognition
– –
Category 0: up to 10 kg Size category Manufacturer – Type – Approval number – (E1 ...) Order number Automatic child seat recognition
– –
Category 0+: up to 13 kg Size catego- ries Manufac- turer Type
Britax Römer –
D, C
BABY SAFE ISOFIX PLUS 04 301146
Approval number (E1 ...) Order num- ber Automatic child seat recognition
B6 6 86
8224
No–
–
–
–
Children in the vehicle
59
D, C, B, A – – –
Category I: 9 to 18 kg Size categories Manufacturer Type Approval number (E1 ...) Order number Automatic child seat recognition
– –
Size category Manufacturer Type Approval number (E1 ...) Order number Automatic child seat recognition
B1
Britax Römer DUO PLUS 03 301133
04 301133
A000 970 11 00
YesChild-proof locks Important safety notes G WARNING Activate the child-proof locks for the rear doors and the override switch for the rear windows when children are travelling in the vehicle. Otherwise, the children could open doors or side windows while the vehicle is in motion and injure themselves or others. G WARNING Do not leave children unsupervised in the vehicle, even if they are secured in a child restraint system. They could injure them- selves on parts of the vehicle. They could also be seriously or even fatally injured by pro- longed exposure to extreme heat or cold.
60 Driving safety systems
Do not expose the child restraint system to direct sunlight. Parts of the child restraint sys- tem could heat up and the child could burn herself/himself on them. If a child opens a door, the child or other per- sons could be injured as a result. They could get out and injure themselves or be injured by a passing vehicle. Also observe the notes on HOLD. Relevant information can be found in the index.
Child-proof locks for the rear doors
Override feature for the rear side win- dows
X To activate/deactivate: press button :. If indicator lamp ; is lit, operation of the rear side windows is disabled. Operation is only possible using the switches in the driv- er's door. If indicator lamp ; is off, oper- ation is possible using the switches in the rear compartment.
You secure each door individually with the child-proof locks on the rear doors. A door secured with a child-proof lock cannot be opened from inside the vehicle. When the vehicle is unlocked, the door can be opened from the outside. X To activate: press the child-proof lock lever down in the direction of arrow ;. X Make sure that the child-proof locks are
working properly.
X To deactivate: press the child-proof lock
lever up in the direction of arrow :.
Driving safety systems Driving safety systems overview In this section, you will find information about the following driving safety systems: RABS (Anti-lock Braking System)
RBAS (Brake Assist System) (Y page 62) RBAS PLUS (Brake Assist System Plus)
RCOLLISION PREVENTION ASSIST
RAdaptive brake lamps (Y page 65) RESP® (Electronic Stability Program)
REBD (Electronic Brake force Distribution)
(Y page 61)
(Y page 62)
(Y page 63)
(Y page 66)
(Y page 68)
RADAPTIVE BRAKE (Y page 68) RPRE-SAFE® Brake (Y page 68) RSTEER CONTROL (Y page 70)
Important safety notes If you fail to adapt your driving style or become distracted, the driving safety sys- tems can neither reduce the risk of accident nor override the laws of physics. Driving safety systems are merely aids designed to assist driving. You are responsible for the dis- tance to the vehicle in front, for vehicle speed and for braking in good time. Always adapt your driving style to suit the prevailing road and weather conditions and maintain a safe distance from the vehicle in front. Drive care- fully. i The driving safety systems described only work as effectively as possible when there is adequate contact between the tyres and the road surface. Please pay special atten- tion to the notes on tyres, recommended minimum tyre tread depths, etc. (Y page 396). In wintry driving conditions, always use winter tyres (M+S tyres) and if necessary, snow chains. Only in this way will the driv- ing safety systems described in this section work as effectively as possible.
ABS (Anti-lock Braking System) Important safety notes i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If ABS is faulty, the wheels could lock when braking. The steerability and braking charac- teristics may be severely impaired. Addition- ally, further driving safety systems are deac- tivated. There is an increased danger of skid- ding and accidents. Drive on carefully. Have ABS checked imme- diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems, including driving safety systems, will also become inoperative. Observe the information
Driving safety systems
61
on the ABS warning lamp (Y page 326) and display messages which may be shown in the instrument cluster (Y page 291). ABS regulates brake pressure in such a way that the wheels do not lock when you brake. This allows you to continue steering the vehi- cle when braking. ABS works from a speed of about 8 km/h upwards, regardless of road-surface condi- tions. ABS works on slippery surfaces, even when you only brake gently. The yellow ! ABS warning lamp in the instrument cluster lights up when the ignition is switched on. It goes out when the engine is running.
Brakes X If ABS intervenes: continue to depress the brake pedal with force until the braking sit- uation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel a pulsing in the brake pedal. The pulsating brake pedal can be an indica- tion of hazardous road conditions, and func- tions as a reminder to take extra care while driving.
Off-road ABS An ABS system specifically suited to off-road terrain is activated automatically once the off- road program is activated on: RVehicles without the ON&OFFROAD pack-
RVehicles with the ON&OFFROAD package
age (Y page 252)
(Y page 253)
At speeds below 30 km/h, the front wheels lock cyclically during braking. The digging-in effect achieved in the process reduces the stopping distance when driving off-road. This limits steering capability.
62 Driving safety systems
BAS (Brake Assist System) i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of accident. In an emergency braking situation, depress the brake pedal with full force. ABS prevents the wheels from locking.
BAS operates in emergency braking situa- tions. If you depress the brake pedal quickly, BAS automatically boosts the braking force, thus shortening the stopping distance. The brakes will function as usual once you release the brake pedal. BAS is deactivated.
BAS PLUS (Brake Assist System Plus) i Observe the "Important safety notes" sec-
tion (Y page 61).
BAS PLUS is only available on vehicles with DISTRONIC PLUS. BAS PLUS provides braking assistance in haz- ardous situations at speeds greater than 7 km/h and uses radar sensor technology to assess the traffic situation. With the help of the radar sensor system, BAS PLUS can detect obstacles that are in the path of your vehicle for an extended period of time. At speeds up to approximately 70 km/h, BAS PLUS may also detect stationary obstacles, for example, stopped or parked vehicles. To prevent a front-end collision, BAS PLUS calculates the brake force necessary if: Ryou approach an obstacle, and RBAS PLUS has detected a risk of collision If you are driving at a speed over 30 km/h: if you depress the brake sharply, BAS PLUS automatically raises the brake pressure to a value adapted to the traffic sit- uation.
If you are driving at a speed under 30 km/h: if you depress the brake, BAS PLUS is activated. Braking will be carried out at the last possible moment. If BAS PLUS demands particularly high brak- ing force, preventative passenger protection measures (PRE-SAFE®) are activated simul- taneously. X Keep the brake pedal depressed until the
emergency braking situation is over. ABS prevents the wheels from locking.
BAS PLUS is deactivated and the brakes func- tion as usual, if: Ryou release the brake pedal. Rthere is no longer any danger of a rear-end
collision.
Rno obstacle is detected in front of your
vehicle.
If you have activated DSR (Y page 251), BAS PLUS is also deactivated. The radar sensor system is switched off auto- matically in the vicinity of radio telescope facilities in the following vehicles: Rvehicles with COMAND Online and naviga-
tion
Rvehicles with Audio 20 and Becker® MAP
PILOT Becker® MAP PILOT must be connected; see the separate operating instructions.
The radar sensor system must be switched off using the on-board computer in the vicinity of radio telescope facilities in the following vehi- cles: Rvehicles without COMAND Online and nav-
igation
Rvehicles without Audio 20 and Becker®
MAP PILOT
Rvehicles for Australia For information on switching off the radar sensor system using the on-board computer, see (Y page 283).
For BAS PLUS to assist you when driving, the radar sensor system must: Rbe switched on (Y page 283) Rbe operational (Y page 298) If the radar sensor system is malfunctioning, BAS PLUS will not be available. The brake system is still available with complete brake boosting effect and BAS. G WARNING BAS PLUS cannot always clearly identify objects and complex traffic situations. BAS PLUS cannot intervene in these cases. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and be ready to brake.
In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else cover-
ing the sensors
Rsnow or heavy rain Rinterference by other radar sources Rthe possibility of strong radar reflections,
for example, in multi-storey car parks
Ra narrow vehicle travelling in front, e.g. a
motorcycle
Ra vehicle travelling in front on a different
line G WARNING BAS PLUS does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering As a result, BAS PLUS may not intervene in all critical situations. There is a risk of an acci- dent. Always pay careful attention to the traffic sit- uation and be ready to brake.
Following damage to the front end of the vehi- cle, have the configuration and operation of the radar sensors checked at a qualified spe-
Driving safety systems
63
cialist workshop. This also applies to colli- sions at slow speeds where there is no visible damage to the front of the vehicle.
COLLISION PREVENTION ASSIST General notes COLLISION PREVENTION ASSIST consists of Adaptive Brake Assist and the distance warn- ing function, which are described in the fol- lowing.
Distance warning function Important safety notes i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING The distance warning function does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering Thus, the distance warning function cannot provide a warning in all critical situations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and be ready to brake.
The distance warning function cannot always clearly identify objects and complex traffic situations. In such cases, the distance warning signal may: Rgive an unnecessary warning Rnot give a warning Always pay careful attention to the traffic sit- uation, do not rely on the distance warning function alone. Function X To activate/deactivate: activate or deac- tivate the distance warning function in the on-board computer (Y page 278).
64 Driving safety systems
When the distance warning function is acti- vated, the multifunction display shows the Ä symbol as long as the HOLD function is not activated (Y page 211). On vehicles with Active Parking Assist, the Ä symbol is dis- played when position P is engaged or you are driving faster than 35 km/h. The distance warning function can help you to minimise the risk of a collision with the vehicle in front or reduce the effects of such a collision. If the distance warning function detects that there is a risk of a collision, you will be warned visually and acoustically. The distance warning function cannot prevent a collision without your intervention. The distance warning function will issue a warning at speeds of around 30 km/h or more if: Rthe distance to the vehicle in front is too short for the speed you are driving at for several seconds. The · distance warn- ing lamp then lights up in the instrument cluster.
Ryou are rapidly approaching the vehicle in
front. An intermittent warning tone will then sound and the · distance warning lamp will light up in the instrument cluster. X Brake immediately in order to increase the
distance from the vehicle in front.
or X Take evasive action provided it is safe to do
so.
For the distance warning function to assist you when driving, the function must be acti- vated in the on-board computer and be opera- tional (Y page 278). Due to the nature of the system, particularly complicated driving conditions may cause the system to display an unnecessary warning. With the help of the radar sensor system, the distance warning function can detect obsta- cles that are in the path of your vehicle for an extended period of time. At speeds up to approximately 70 km/h, the distance warning function may also detect
stationary obstacles, for example, stopped or parked vehicles. If you approach an obstacle and the distance warning function detects a risk of a collision, the system will initially alert you both visually and acoustically. In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else cover-
ing the sensors
Rsnow or heavy rain Rinterference by other radar sources Rthe possibility of strong radar reflections,
for example, in multi-storey car parks
Ra narrow vehicle travelling in front, e.g. a
motorcycle
Ra vehicle travelling in front on a different
line
Following damage to the front end of the vehi- cle, have the configuration and operation of the radar sensor checked at a qualified spe- cialist workshop. This also applies to colli- sions at slow speeds where there is no visible damage to the front of the vehicle.
Adaptive Brake Assist i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING Adaptive Brake Assist cannot always clearly identify objects and complex traffic situa- tions. In these cases, Adaptive Brake Assist may not intervene. There is a risk of an acci- dent. Always pay careful attention to the traffic sit- uation and be ready to brake. G WARNING Adaptive Brake Assist does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic
Rto stationary obstacles Rwhen cornering As a result, Adaptive Brake Assist may not intervene in all critical conditions. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and be ready to brake.
Adaptive Brake Assist aids you in braking dur- ing hazardous situations at speeds above 30 km/h and uses the radar sensor system to evaluate the traffic situation. With the help of the adaptive Brake Assist, the distance warning signal can detect obstacles that are in the path of your vehicle for an extended period of time. Should you approach an obstacle and the adaptive Brake Assist has detected a risk of collision, the adaptive Brake Assist calculates the braking force necessary to avoid a colli- sion with the vehicle in front. Should you apply the brakes forcefully, the adaptive Brake Assist will automatically increase the braking force to a level suitable for the traffic conditions. X Keep the brake pedal depressed until the
emergency braking situation is over. ABS prevents the wheels from locking.
The brakes will work normally again if: Ryou release the brake pedal. Rthere is no longer any danger of a rear-end
collision.
Rno obstacle is detected in front of your
vehicle.
Adaptive Brake Assist is then deactivated. If adaptive Brake Assist demands particularly high braking force, preventative passenger protection measures (PRE-SAFE®) are activa- ted simultaneously. Up to vehicle speeds of around 250 km/h, the adaptive Brake Assist is capable of react- ing to moving objects that have already been recognised as such at least once over the period of observation. Adaptive Brake Assist does not react to stationary obstacles.
Driving safety systems
65
If the adaptive Brake Assist is not available due to a malfunction in the radar sensor sys- tem, the brake system remains available with full brake boosting effect and BAS. In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else cover-
ing the sensors
Rsnow or heavy rain Rinterference by other radar sources Rthe possibility of strong radar reflections,
for example, in multi-storey car parks
Ra narrow vehicle travelling in front, e.g. a
motorcycle
Ra vehicle travelling in front on a different
line
Following damage to the front end of the vehi- cle, have the configuration and operation of the radar sensor checked at a qualified spe- cialist workshop. This also applies to colli- sions at slow speeds where there is no visible damage to the front of the vehicle.
Adaptive brake lamps If you brake sharply from a speed of more than 50 km/h or if braking is assisted by BAS or BAS PLUS, the brake lamps flash rapidly. In this way, traffic travelling behind you is warned in an even more noticeable manner. If you brake sharply from a speed of more than 70 km/h to a standstill, the hazard warn- ing lamps are activated automatically. If the brakes are applied again, the brake lamps light up continuously. The hazard warning lamps switch off automatically if you travel faster than 10 km/h. You can also switch off the hazard warning lamps using the hazard warning button (Y page 122).
66 Driving safety systems
ESP® (Electronic Stability Program) Important safety notes i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If ESP® is malfunctioning, ESP® is unable to stabilise the vehicle. In addition, other driving safety systems are switched off. This increa- ses the risk of skidding and an accident. Drive on carefully. Have ESP® checked at a qualified specialist workshop.
! Only operate the vehicle for a maximum of ten seconds on a brake dynamometer. Switch off the ignition. Application of the brakes by ESP® may oth- erwise destroy the brake system.
! A function or performance test should only be carried out on a twin-axle dyna- mometer. Before you operate the vehicle on such a dynamometer, please consult a qualified workshop. You could otherwise damage the drive train or the brake system. ESP® is deactivated if the å warning lamp in the instrument cluster lights up continu- ously when the engine is running. If the ÷ warning lamp and the å warn- ing lamp are lit continuously, ESP® is not available due to a malfunction. Observe the information on warning lamps (Y page 329) and display messages which may be shown in the instrument cluster (Y page 291). If ESP® detects that the vehicle is deviating from the direction desired by the driver, one or more wheels are braked to stabilise the vehicle. The engine output is also modified to keep the vehicle on the desired course within physical limits. ESP® assists the driver when pulling away on wet or slippery roads. ESP® can also stabilise the vehicle during braking. If ESP® intervenes, the ÷ ESP® warning lamp flashes in the instrument cluster.
If ESP® intervenes: X Do not deactivate ESP® under any circum-
stances.
X When pulling away, only depress the accel-
erator pedal as far as is necessary.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
i Only use wheels with the recommended
tyre sizes. Only then will ESP® function properly.
4ETS (Electronic Traction System) Traction control is part of ESP®. Traction control brakes the drive wheels indi- vidually if they spin. This enables you to pull away and accelerate on slippery surfaces, for example if the road surface is slippery on one side. In addition, more drive torque is trans- ferred to the wheel or wheels with traction. Traction control remains active if you deacti- vate ESP®. In appropriate driving situations, activate the off-road program: X Vehicles without the ON&OFFROAD pack-
X Vehicles with the ON&OFFROAD package
age (Y page 252)
(Y page 253)
Off-road 4ETS (Electronic Traction Sys- tem) A 4ETS system specifically suited to off-road terrain is activated automatically once the off- road program is activated on: RVehicles without the ON&OFFROAD pack-
RVehicles with the ON&OFFROAD package
age (Y page 252)
(Y page 253)
Deactivating/activating ESP® G WARNING If you deactivate ESP®, ESP® no longer sta- bilises the vehicle. There is an increased risk of skidding and an accident. Only deactivate ESP® in the situations descri- bed in the following.
X To switch off: press button :.
The å ESP® OFF warning lamp in the instrument cluster lights up.
X To switch on: press button :.
The å ESP® OFF warning lamp in the instrument cluster goes out.
ESP® is activated automatically when the engine is started. The ECO start/stop function switches the engine off automatically if the vehicle stops moving. When pulling away again, the engine starts automatically. ESP® remains in its pre- viously selected status. Example: if ESP® was deactivated before the engine was switched off, ESP® remains deactivated when the engine is switched on again. If ESP® is deactivated and one or more wheels start to spin, the ÷ ESP® warning lamp in the instrument cluster flashes. In such situa- tions, ESP® will not stabilise the vehicle.
Driving safety systems
67
It may be best to deactivate ESP® in the fol- lowing situations: Rwhen using snow chains Rin deep snow Ron sand or gravel If you deactivate ESP®: RESP® no longer improves driving stability. Rtraction control is still activated. RESP® still provides support when you
brake.
Rengine torque is not limited and the drive wheels are able to spin. The spinning of the wheels results in a cutting action for better traction.
Off-road ESP® An ESP® system specifically suited to off-road terrain is activated automatically once the off- road program is activated on: RVehicles without the ON&OFFROAD pack-
RVehicles with the ON&OFFROAD package
age (Y page 252)
(Y page 253)
Off-road ESP® intervenes with a delay if there is oversteering or understeering, thus improv- ing traction.
ESP® trailer stabilisation G WARNING If road and weather conditions are poor, trailer stabilisation will not be able to prevent the vehicle/trailer combination from swerv- ing. Trailers with a high centre of gravity can tip over before ESP® can detect this. There is a risk of an accident. Always adapt your driving style to the prevail- ing road and weather conditions.
If your vehicle/trailer combination begins to lurch, you can only stabilise the vehicle/ trailer combination by depressing the brake firmly.
68 Driving safety systems
In this situation, ESP® assists you and can detect if the vehicle/trailer combination begins to lurch. ESP® slows the vehicle down by braking and limiting the engine output until the vehicle/trailer combination has stabi- lised. Trailer stabilisation is active above speeds of about 60 km/h. Trailer stabilisation does not work if ESP® is deactivated or disabled because of a mal- function.
Crosswind Assist Strong crosswinds can cause your vehicle to deviate from a straight course. The crosswind driving assistance function integrated into ESP® significantly reduces these effects. ESP® intervenes automatically according to the direction and intensity of the crosswinds affecting your vehicle. When driving on straight roads or gentle bends, your vehicle is kept safely on course by a stabilising brake intervention. Crosswind driving assistance is active above a vehicle speed of 80 km/h. Crosswind driving assistance does not work if ESP® is deactivated or disabled because of a malfunction.
EBD (electronic brake force distribu- tion) i Observe the "Important safety notes" sec-
tion (Y page 61). G WARNING If EBD has malfunctioned, the rear wheels can still lock, e.g. under full braking. This increa- ses the risk of skidding and an accident. You should therefore adapt your driving style to the different handling characteristics. Have the brake system checked at a qualified spe- cialist workshop.
Observe information regarding indicator and warning lamps (Y page 327) as well as dis- play messages (Y page 293). EBD monitors and controls the brake pres- sure on the rear wheels to improve driving stability while braking.
ADAPTIVE BRAKE ADAPTIVE BRAKE enhances braking safety and offers increased braking comfort. In addi- tion to the braking function, ADAPTIVE BRAKE also has the HOLD function (Y page 211) and hill start assist (Y page 162).
PRE-SAFE® Brake i Observe the "Important safety notes" sec-
tion (Y page 61).
PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS. PRE-SAFE® Brake can help you to minimise the risk of a collision with a vehicle in front or reduce the effects of such a collision. If PRE- SAFE® Brake has detected a risk of collision, you will be warned visually and acoustically as well as by automatic braking. PRE-SAFE® Brake cannot prevent a collision without your intervention. This function will issue a warning if: Rat speeds of around 30 km/h or more over several seconds, the distance maintained to the vehicle travelling in front is insuffi- cient. The · distance warning lamp then lights up in the instrument cluster.
Rat a speed of approximately 7 km/h or
higher, you very quickly approach a vehicle in front. An intermittent warning tone will then sound and the · distance warning lamp will light up in the instrument cluster.
Driving safety systems
69
X Brake immediately in order to increase the
distance from the vehicle in front.
or X Take evasive action provided it is safe to do
so.
From a speed of approximately 7 km/h, if the driver and passengers have fastened their seat belts, PRE-SAFE® Brake can brake the vehicle automatically at speeds up to approx- imately 200 km/h. Due to the nature of the system, particularly complicated driving conditions may cause unnecessary warnings or the unnecessary intervention of PRE-SAFE® Brake. You can stop PRE-SAFE ® Brake intervention at any time by: Rdepressing the accelerator pedal further Ractivating kickdown Rreleasing the brake pedal. The braking action of PRE-SAFE® Brake is ended automatically if: Ryou manoeuvre to avoid the obstacle. Rthere is no longer any danger of a rear-end
collision.
Rthere is no longer an obstacle detected in
front of your vehicle.
If you have activated DSR (Y page 251) PRE- SAFE® Brake is also deactivated. With the help of the radar sensor system, PRE-SAFE® Brake can detect obstacles that are in front of your vehicle for an extended period of time. At speeds up to approximately 70 km/h, PRE- SAFE® Brake can also detect stationary obstacles such as stopped or parked vehi- cles. If you approach an obstacle and PRE-SAFE® Brake detects a risk of a collision, the system will alert you both visually and acoustically. If you do not brake or take evasive action, the system will warn you by automatically braking the vehicle gently. If there is an increased risk of collision, preventative passenger protec- tion measures (PRE-SAFE®) are activated
(Y page 45). If, at speeds over 30 km/h, a risk of collision remains and you do not brake, take evasive action or significantly acceler- ate, automatic braking may be performed up to a level of automatic emergency braking. Automatic emergency braking is not per- formed until immediately prior to an accident that can no longer be avoided. G WARNING PRE-SAFE® Brake will initially brake your vehi- cle by a partial application of the brakes if a danger of collision is detected. There may be a collision unless you also brake. Automatic emergency braking cannot prevent a colli- sion. There is a risk of an accident. Always apply the brakes yourself and try to take evasive action. G WARNING PRE-SAFE® Brake cannot always clearly iden- tify objects and complex traffic conditions. In these cases, PRE-SAFE® Brake may: Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene There is a risk of an accident. Always pay particular attention to the traffic situation and be ready to brake, especially if PRE-SAFE® Brake warns you. Terminate the intervention in a non-critical driving situation.
In particular, the detection of obstacles can be impaired if there is: Rdirt on the sensors or anything else cover-
ing the sensors
Rsnow or heavy rain Rinterference by other radar sources Rthe possibility of strong radar reflections,
for example, in multi-storey car parks
Ra narrow vehicle travelling in front, e.g. a
motorcycle
Ra vehicle travelling in front on a different
line
70 Driving safety systems
G WARNING PRE-SAFE® Brake does not react: Rto people or animals Rto oncoming vehicles Rto crossing traffic Rwhen cornering As a result, PRE-SAFE® Brake may neither give warnings nor intervene in all critical sit- uations. There is a risk of an accident. Always pay careful attention to the traffic sit- uation and be ready to brake.
In order to maintain the appropriate distance to the vehicle in front and thus prevent a col- lision, you must apply the brakes yourself. X To activate/deactivate: activate or deac-
tivate PRE-SAFE® Brake in the on-board computer (Y page 278). When PRE-SAFE® Brake is activated, the Ä symbol appears in multifunction dis- play, as long as the HOLD function is deac- tivated (Y page 211). On vehicles with the Active Parking Assist driving system, the Ä symbol is displayed when position P is engaged or you are driving faster than 35 km/h.
For PRE-SAFE® Brake to assist you when driv- ing, the radar sensor system must be switched on (Y page 283) and be opera- tional. The radar sensor system is switched off auto- matically in the vicinity of radio telescope facilities in the following vehicles: Rvehicles with COMAND Online and naviga-
tion
Rvehicles with Audio 20 and Becker® MAP
PILOT Becker® MAP PILOT must be connected; see the separate operating instructions.
The radar sensor system must be switched off using the on-board computer in the vicinity of radio telescope facilities in the following vehi- cles: Rvehicles without COMAND Online and nav-
igation
Rvehicles without Audio 20 and Becker®
MAP PILOT
Rvehicles for Australia For information on switching off the radar sensor system using the on-board computer, see (Y page 283). Following damage to the front end of the vehi- cle, have the configuration and operation of the radar sensors checked at a qualified spe- cialist workshop. This also applies to colli- sions at slow speeds where there is no visible damage to the front of the vehicle.
STEER CONTROL i Observe the "Important safety notes" sec-
tion (Y page 61).
STEER CONTROL helps you by transmitting a noticeable steering force to the steering wheel in the direction required for vehicle stabilisation. This steering support is provided in particular if: Rboth right wheels or both left wheels are on
a wet or slippery road surface when you brake.
Rthe vehicle starts to skid. If there is an ESP® malfunction, you will not receive any steering support from STEER CONTROL. Power steering will, however, con- tinue to function.
Anti-theft systems Immobiliser X To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO: switch the
ignition off and open the driver's door. X To deactivate: switch on the ignition. The immobiliser prevents your vehicle from being started without the correct key. When leaving the vehicle, always take the key with you and lock the vehicle. Anyone can start the engine if a valid key has been left inside the vehicle. i The immobiliser is always deactivated
when you start the engine.
ATA (Anti-Theft Alarm system)
X To prime: lock the vehicle with the key or
KEYLESS-GO. Indicator lamp : flashes. The alarm sys- tem is primed after approximately 15 seconds.
X To switch off with the key: unlock the
vehicle using the key.
or X Insert the key into the ignition lock. X To switch off with KEYLESS-GO: unlock
the vehicle using KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle.
Anti-theft systems
71
A visual and audible alarm is triggered if the alarm system is primed and you open: Ra door Rthe vehicle with the emergency key ele-
ment
Rthe tailgate Rthe bonnet X To turn the alarm off with the key: press
the % or & button on the key. The alarm is switched off.
or X Insert the key into the ignition lock.
The alarm is switched off.
X To stop the alarm using KEYLESS-GO: grasp the outside door handle. The key must be outside the vehicle. The alarm is switched off.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. The alarm is switched off.
The alarm is not switched off, even if you close the open door that has triggered it, for example.
Tow-away protection Function An audible and visual alarm is triggered if your vehicle's angle of inclination is altered while tow-away protection is primed. This can occur if the vehicle is jacked up on one side, for example.
Activating X Make sure that:
72
Anti-theft systems
Rthe doors are closed. Rthe tailgate is closed. Only then is the tow-away protection primed.
X Lock the vehicle with the key or KEYLESS-
GO. Tow-away protection is primed after approximately 60 seconds.
Switching off X To switch off with key: unlock the vehicle
with the key.
or X Insert the key into the ignition lock.
Tow-away protection is switched off auto- matically.
X To switch off with KEYLESS-GO: unlock
the vehicle with KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. Tow-away protection is switched off auto- matically.
Deactivating
X Remove the key from the ignition lock. X Press button :.
Indicator lamp ; lights up briefly.
X Lock the vehicle with the key or KEYLESS-
GO. Tow-away protection is deactivated.
Tow-away protection remains deactivated until: Rthe vehicle is unlocked again and Ra door is opened and closed again and Rthe vehicle is locked again. To prevent a false alarm, deactivate the tow- away protection if you lock your vehicle and it: Ris being transported Ris being loaded onto a ferry or car trans-
porter, for example
Ris parked on a movable surface, e.g. in a
split-level garage.
Interior motion sensor Function When the interior motion sensor is primed, a visual and audible alarm is triggered if move- ment is detected in the vehicle interior. This can occur if someone reaches into the vehicle interior, for example.
Activating X Make sure that:
Rthe side windows are closed. Rthe hinged side windows are closed. Rthe sliding sunroof/panorama sliding
sunroof is closed.
Rthere are no objects, e.g. mascots, hang- ing on the rear-view mirror or on the grab handles on the roof trim.
This will prevent false alarms.
X Make sure that:
Rthe sliding sunroof/panorama sliding
sunroof is closed.
Rthe doors are closed. Rthe tailgate is closed. Only then is the interior motion sensor primed.
X Lock the vehicle with the key or KEYLESS-
GO. The interior motion sensor is primed after approximately 30 seconds.
Switching off X To switch off with the key: unlock the
vehicle using the key.
or X Insert the key into the ignition lock.
The interior motion sensor is switched off automatically.
X To switch off with KEYLESS-GO: unlock
the vehicle using KEYLESS-GO.
or X Press the Start/Stop button on the dash- board. The key must be inside the vehicle. The interior motion sensor is switched off automatically.
Deactivating
X Remove the key from the ignition lock. X Press button :.
Indicator lamp ; flashes briefly.
X Lock the vehicle with the key or KEYLESS-
GO. The interior motion sensor is deactivated.
Anti-theft systems
73
The interior motion sensor remains deactiva- ted until: Rthe vehicle is unlocked again and Ra door is opened and closed again and Rthe vehicle is locked again. To prevent a false alarm, deactivate the inte- rior motion sensor if you lock your vehicle and: Rpeople or animals remain in the vehicle. Rthe side windows remain open. Ra hinged side window remains open. Rthe sliding sunroof/panorama sliding sun-
roof remains open.
i UK only: your vehicle is equipped with a double lock function. The doors cannot be opened from the inside if the vehicle has been locked with the key or with KEYLESS- GO. Deactivate the interior motion sensor before you lock the vehicle. The doors can then be opened from the inside after the vehicle has been locked from the outside. Observe the "Important safety notes" (Y page 82).
74
75
Useful information .............................. 76
Key ....................................................... 76
Doors .................................................... 82
Luggage compartment ....................... 85
Side windows ...................................... 89
Sliding sunroof .................................... 9376 Key
Ropen a door from inside the vehicle at any
time, even if it has been locked
Rstart the vehicle using a key which has been
left in the vehicle
Rrelease the electric parking brake They could thereby endanger themselves and others. Never leave children unsupervised in the vehicle. Always take the key with you when leaving the vehicle, even if you are only leaving it for a short time. G WARNING If a key ring is too heavy or too large, the weight acting on the key could cause it to turn in the ignition lock or catch on the steering wheel. This could cause the engine to be switched off suddenly. You may lose control of the vehicle and cause an accident. Do not attach any heavy or large key rings to the key that is inserted in the ignition.
RDo not keep the key:
- electronic devices, e.g. a mobile phone
or another key
- metallic objects, e.g. coins or metal film - metallic objects, e.g. a metal case. This can affect the key's functionality.
Do not keep the KEYLESS-GO key in the tem- perature-controlled cup holder. Otherwise, the KEYLESS-GO key will not be detected. Keep the key away from strong magnetic fields. Otherwise, the remote control function could be affected.
Useful information
i This Owner's Manual describes all mod- els, series and optional equipment for your vehicle that were available at the time of going to press. National variations are pos- sible. Note that your vehicle may not be equipped with all of the functions descri- bed. This is also the case for systems and functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 25).
Key Important safety notes G WARNING Only for the United Kingdom: if the vehicle has been locked with the key or with KEY- LESS-GO, the double lock function is activa- ted as standard. It is then not possible to open the doors from inside the vehicle. Therefore, do not leave any people behind in the vehicle, particularly children, elderly peo- ple or people requiring special assistance. As a result, they may not be able to free them- selves in the event of an emergency. They could be seriously or even fatally injured by prolonged exposure to extremely high or low temperatures, for example. In this case, res- cuing people from outside the vehicle is diffi- cult. Deactivate the interior motion sensor before you lock the vehicle. The doors can then be opened from the inside after the vehicle has been locked from the outside. G WARNING If children are left unsupervised in the vehicle, they could:
Key functions
: & To lock the vehicle ; F To open/close the tailgate = % To unlock the vehicle X To unlock centrally: press the % but-
ton. If you do not open the vehicle within approximately 40 seconds of unlocking: Rthe vehicle is locked again. Rthe anti-theft system is primed again.
X To lock centrally: press the & button. The key centrally locks/unlocks: Rthe doors Rthe tailgate Rthe fuel filler flap When unlocking, the turn signals flash once. When locking, they flash three times. You can also set an audible signal to confirm that the vehicle has been locked. The audible signal can be activated and deactivated using the on-board computer (Y page 283). When it is dark, the surround lighting also comes on if it is activated in the on-board computer (Y page 282).
KEYLESS-GO General notes Bear in mind that the engine can be started by any of the vehicle occupants if there is a KEYLESS-GO key in the vehicle.
Key
77
Locking and unlocking centrally You can start, lock or unlock the vehicle using KEYLESS-GO. To do this, you only need carry the key with you. When you touch the surface of the sensors on the vehicle's outside door handles, KEYLESS-GO establishes a radio connection between the vehicle and the key. When the engine is started and whilst you are driving, KEYLESS-GO also checks whether a valid key is in the vehicle by periodically establishing radio contact. You can combine the KEYLESS-GO functions with the functions of a conventional key. Unlock the vehicle by using KEYLESS-GO, for instance, and lock it using the & button on the key. When locking or unlocking with KEYLESS-GO, the distance between the key and the corre- sponding door handle must not be greater than 1 m.
X To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ; for an exten- ded period.
Further information on the convenience clos- ing feature (Y page 90). If you pull on the handle of the tailgate, only the luggage compartment of the vehicle is unlocked.
78 Key
Changing the settings of the locking system You can change the settings of the locking system. This means that only the driver's door and the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if you fre- quently travel on your own. X To change the setting: press and hold
down the % and & buttons simulta- neously for approximately six seconds until the battery check lamp flashes twice (Y page 79).
i If the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the & or % button: Rlocks or Runlocks the vehicle
The key now functions as follows: X To unlock the driver's door: press the
% button once.
