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observing the traffic conditions, thereby caus- ing an accident.
The automatic climate control regulates the temperature and the humidity in the vehicle interior and filters undesirable substances from the air. The automatic climate control is only opera- tional when the engine is running22. Optimum operation is only achieved if you drive with the side windows and sliding sunroof/panorama sliding sunroof closed. You can also set some automatic climate con- trol functions via COMAND (Y page 278). i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con- venience opening feature (Y page 92). This will speed up the cooling process and the desired vehicle interior temperature will be reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out
22 The residual heat function can only be activated/deactivated if the ignition is switched off.
Overview of climate control systems
305
Automatic climate control panel
Front control panel
: Sets climate control to automatic mode, left (Y page 307) ; Sets the temperature, left (Y page 308) = Sets the airflow, left (Y page 309) ? Demists the windscreen (Y page 310) A Activates/deactivates air-recirculation mode (Y page 311) B Switches the climate control on/off23(Y page 306)
Activates/deactivates the residual heat function23(Y page 312)
C Switches the auxiliary heating on/off (Y page 312) D Switches the rear window heating on/off (Y page 310) E Sets the airflow, right (Y page 309) F Sets the temperature, right (Y page 308) G Sets climate control to automatic mode, right (Y page 307)
Rear control panel
H Sets the temperature, left (Y page 308) I Sets the air distribution, left (Y page 309) J Sets the airflow (Y page 309) K OFF Switches rear-compartment climate control off (Y page 306)
AUTO Sets rear-compartment climate control to automatic mode (Y page 307) MAN Sets rear-compartment climate control to manual mode (Y page 307)
23 On vehicles without auxiliary heating, these functions have separate rocker switches.
306 Operating the climate control system
L Sets the air distribution, right (Y page 309) M Sets the temperature, right (Y page 308)
Notes on using climate control Below, you can find a number of notes and recommendations to help you use climate control optimally. RActivate climate control using the à rocker switch. The indicator lamp in the à rocker switch lights up. RSet the temperature to 22 †. ROnly use the demisting function briefly,
until the windscreen is clear again.
ROnly use the air-recirculation mode briefly, e.g. if there are unpleasant outside odours or when in a tunnel. The windows could otherwise mist up as no fresh air is drawn into the vehicle in air-recirculation mode. RUse the residual heat function if you want
to heat or ventilate the vehicle interior when the ignition is switched off. The resid- ual heat function can only be activated or deactivated with the ignition switched off.
Operating the climate control system Switching climate control on/off Important information i When climate control is switched off, the
air supply and air circulation are also switched off. Only select this setting briefly. Otherwise, the windows may mist up.
i Switch on climate control primarily using
the à rocker switch (Y page 307).
Switching the front climate control on/ off using the front control panel X Turn the key to position 2 in the ignition
lock.
X To switch on: press the Ç rocker
switch up or down. The indicator lamp in the rocker switch goes out. The previously selected settings come into effect again.
X To switch off: press the Ç rocker
switch up or down. The indicator lamp in the rocker switch lights up.
Switching the rear-compartment cli- mate control on/off using the front con- trol panel X Turn the key to position 2 in the ignition
lock.
X Activate the Y rear compartment func-
tion via COMAND (Y page 281). The rear-compartment climate control can be controlled via the front control panel using the Y rear compartment function.
X To switch on: press the Ç rocker
switch up or down. The indicator lamp in the rocker switch goes out. The previously selected settings come into effect again.
X To switch off: press the Ç rocker
switch up or down. The indicator lamp in the rocker switch lights up.
Operating the climate control system 307
Switching the rear-compartment cli- mate control on/off using the rear con- trol panel X Turn the key to position 2 in the ignition
lock.
X To switch on: press rocker switch K(Y page 305) up or down and select AUTO.
or X Press rocker switch K(Y page 305) up or down and select MAN. X To switch off: press rocker switch K(Y page 305) up or down and select OFF.
Activating/deactivating the cooling with air dehumidification function Important information The cooling with air dehumidification function is only available when the engine is running. The air inside the vehicle is cooled and dehu- midified according to the temperature selec- ted. G WARNING If the "cooling with air dehumidification" func- tion is deactivated, the air inside the vehicle will not be cooled (during warm weather) or dehumidified. The windows could mist up more quickly. This may prevent you from observing the traffic conditions, thereby caus- ing an accident.
Condensation may drip from the underside of the vehicle when THERMOTRONIC is in cool- ing mode. This is normal and not a sign that there is a malfunction. You can activate or deactivate the cooling with air dehumidification function via COMAND (Y page 280). i The cooling with air dehumidification
function uses refrigerant R134a. This cool- ant does not contain chlorofluorocarbons,
and therefore does not damage the ozone layer.
Problems with the cooling with air dehumidification function If you can no longer switch on the cooling with air dehumidification function via COMAND, the cooling with air dehumidification function is switched off due to a malfunction. X Consult a qualified specialist workshop.
Setting climate control to automatic mode In automatic mode, the set temperature is maintained automatically at a constant level. The system automatically regulates the tem- perature of the dispensed air, the airflow and the air distribution. Automatic mode will achieve optimal opera- tion if cooling with air dehumidification is also activated. If desired, cooling with air dehu- midification can be deactivated.
Controlling the front climate control using the front control panel X Turn the key to position 2 in the ignition
lock.
X Set the desired temperature. X To switch on: press the à rocker
switch up or down. The indicator lamp in the à rocker switch lights up.
X To deactivate: press the K rocker
switch up or down. The indicator lamp in the à rocker switch goes out.
or X Set the air distribution using COMAND
(Y page 279). The indicator lamp in the à rocker switch goes out.
308 Operating the climate control system
Setting the temperature
Controlling the rear-compartment cli- mate control automatically using the front control panel X Turn the key to position 2 in the ignition
lock.
X Activate the Y rear compartment func-
tion via COMAND (Y page 281). Rear-compartment climate control can be controlled via the front control panel using the Y rear compartment function.
X Set the desired temperature. X To switch on: press rocker switch Ã
up or down. The indicator lamp in the à rocker switch lights up.
X To deactivate: press the K rocker
switch up or down. The indicator lamp in the à rocker switch goes out.
or X Set the air distribution using COMAND
(Y page 279). The indicator lamp in the à rocker switch goes out.
i To return to the standard display, activate
the front climate control function via COMAND (Y page 281).
i The rear display changes to the standard
display automatically after five seconds.
Controlling the rear-compartment cli- mate control automatically using the rear control panel X Turn the key to position 2 in the ignition
lock.
X Set the desired temperature. X To activate: press rocker switch K up or down and select AUTO(Y page 305). X To deactivate: press rocker switch K up or down and select MAN or OFF(Y page 305).
Automatic climate control zones You can select different temperature settings for the driver's and front-passenger sides as well as for the left and right sides of the rear compartment and the footwells.
Setting the temperature in the front compartment using the front control panel X Turn the key to position 2 in the ignition
lock.
X To increase/reduce: press the w
rocker switch up or down. Only change the temperature setting in small increments. Start at 22 †.
i You can also use COMAND to set the
temperature (Y page 278).
Setting the temperature in the rear compartment using the front control panel X Turn the key to position 2 in the ignition
lock.
X Activate the "rear Y" function via
COMAND (Y page 281). Using the "rear Y" function, the rear- compartment climate control can be con- trolled via the front control panel.
X To increase/reduce: press the w
rocker switch up or down. Only change the temperature setting in small increments. Start at 22 †.
Operating the climate control system 309
b Directs the airflow through the centre and side air vents as well as the demis- ter vents
W Sets the air distribution to automatic.
Setting the air distribution in the front/ rear compartment using COMAND The air distribution can be set using COMAND (Y page 279).
Setting the air distribution in the rear compartment using the rear control panel X Turn the key to position 2 in the ignition
lock.
X Press rocker switch I or L up or down repeatedly (Y page 305) until the desired air distribution symbol is shown in the dis- play.
Setting the airflow Setting the front-compartment airflow using the front control panel You can select different airflow settings for the driver's and front-passenger sides as well as for the rear compartment. You can also use COMAND to set the airflow (Y page 279). X Turn the key to position 2 in the ignition
lock.
X To increase/reduce: press rocker switch
K up or down.
i To return to the standard display, activate
the front climate control function via COMAND (Y page 281).
i The rear display changes to the standard
display automatically after five seconds.
Setting the temperature in the rear compartment using the rear control panel X Turn the key to position 2 in the ignition
lock.
X To increase/reduce: press rocker
switch H or M up or down (Y page 305). Only change the temperature setting in small increments. Start at 22 †.
Setting the footwell temperature The footwell temperature can be set via COMAND (Y page 280).
Setting the air distribution Air distribution settings The air distribution can be set individually for the driver's and front-passenger sides. ¯ Directs the airflow through the demis-
ter vents
P Directs the airflow through the centre
and side air vents
O Directs the airflow through the foot-
well air vents
S Directs the airflow through the centre and side air vents as well as the foot- well air vents
a Directs the airflow through the foot-
well and demister vents
_ Directs the airflow through the demis- ter vents, the centre and side air vents as well as the footwell air vents
310 Operating the climate control system
Setting the rear-compartment airflow using the front control panel X Turn the key to position 2 in the ignition
lock.
X Activate the Y rear compartment func-
tion via COMAND (Y page 281). The rear-compartment climate control can be controlled via the front control panel using the Y rear compartment function. X To increase/reduce: press rocker switch
K up or down.
X To deactivate: press the ¬ rocker
switch up or down. The indicator lamp in the ¬ rocker switch goes out. The previously selected settings come into effect again. The cooling with air dehumidification function remains on. Air-recirculation mode remains deacti- vated.
or X Press the w rocker switch up or down. or X Press the K rocker switch up or down.
Setting the rear-compartment airflow using the rear control panel X Turn the key to position 2 in the ignition
lock.
X To increase/reduce: press rocker switch
J up or down (Y page 305).
Demisting the windscreen You can use this function to defrost the wind- screen or to demist the inside of the wind- screen and the side windows. i You should only select the demisting
function until the windscreen is clear again.
X Turn the key to position 2 in the ignition
lock.
X To switch on: press the ¬ rocker
switch up or down. The indicator lamp in the ¬ rocker switch lights up. The climate control system switches to the following functions: Rcooling with air dehumidification on Rhigh airflow24
Rhigh temperature24
Rair distribution to the windscreen andfront side windows
Rair-recirculation mode off
24 Depending on the outside temperature.
Demisting the windows Windows misted up on the inside X Activate the "cooling with air dehumidifica- tion" function via COMAND (Y page 280).
X Activate automatic mode Ã. X If the windows continue to mist up, activate
the demisting function (Y page 310).
i You should only select this setting until
the windscreen is clear again.
Windows misted up on the outside X Activate the windscreen wipers. X Activate automatic climate control. i You should only select this setting until
the windscreen is clear again.
Rear window heating Switching on/off G WARNING Clear all windows of ice or snow before setting off. Otherwise, impaired visibility could endanger you and others.
The rear window heating has a high current draw. You should therefore switch it off as soon as the window is clear. It otherwise
Operating the climate control system 311
switches off automatically after several minutes. If the battery voltage is too low, the rear win- dow heating may switch off. X Turn the key to position 2 in the ignition
lock.
X Press the ¤ rocker switch up or down.
The indicator lamp in the ¤ rocker switch lights up or goes out.
indicator lamp in the g rocker switch is not lit when automatic air-recirculation mode is activated. Outside air is added after about 30 minutes.
X To deactivate: press the g rocker
switch up or down. The indicator lamp in the g rocker switch goes out.
Problems with the rear window heating The rear window heating has switched off prematurely or cannot be activated. X Switch off any consumers that are not required, e.g. reading lamps or interior lighting. When the battery is sufficiently charged, the rear window heating is activated again automatically.
Activating/deactivating air-recircula- tion mode You can deactivate the flow of fresh air if unpleasant odours are entering the vehicle from outside. The air already inside the vehi- cle will then be recirculated. G WARNING Only switch over to air-recirculation mode briefly at low outside temperatures. Other- wise, the windows could mist up, thus impair- ing visibility and endangering yourself and others. This may prevent you from observing the traffic conditions, thereby causing an accident.
X Turn the key to position 2 in the ignition
lock.
X To activate: press the g rocker switch
up or down. The indicator lamp in the g rocker switch lights up.
i Air-recirculation mode is activated auto- matically at high outside temperatures. The
i Air-recirculation mode deactivates auto-
matically: Rafter approximately five minutes at out-
side temperatures below approx. 5 †
Rafter approximately five minutes if cool- ing with air dehumidification is deactiva- ted
Rafter approximately 30 minutes at out- side temperatures above around 5 †
Convenience opening/closing using the air-recirculation button G WARNING Make sure that nobody can become trapped between the side window and the door frame as the side windows are opened and closed. Make sure that all objects and body parts are clear of the side windows when they are being opened or closed. You or the objects could be drawn in or become trapped between the side window and the door frame as the window moves. If there is a risk of entrapment, oper- ate the W switch to move the side window in the opposite direction. Make sure that nobody can become trapped as the sliding sunroof/panorama sliding sun- roof is opened and closed. If there is a risk of entrapment, operate the 3 switch to move the sliding sunroof/panorama sliding sunroof in the opposite direction.
X Convenience closing feature (vehicles with a panorama sliding sunroof): press and hold the g rocker switch up or
312 Operating the climate control system
down until the side windows and the pan- orama sliding sunroof are closed. The indicator lamp in the g rocker switch lights up. Air-recirculation mode is activated.
X Convenience closing feature (vehicles with/without a sliding sunroof): press and hold the g rocker switch up or down until the side windows and the sliding sunroof close automatically. The indicator lamp in the g rocker switch lights up. Air-recirculation mode is activated.
X Convenience opening feature (vehicles with a panorama sliding sunroof): press and hold the g rocker switch up or down until the side windows and the pan- orama sliding sunroof have reached their original position. The indicator lamp in the g rocker switch goes out. Air-recirculation mode is deactivated.
X Convenience opening feature (vehicles with/without a sliding sunroof): press and hold the g rocker switch up or down until the side windows and the sliding sunroof open automatically. The indicator lamp in the g rocker switch goes out. Air-recirculation mode is deactivated.
i If you open the side windows or the sliding
sunroof/panorama sliding sunroof man- ually after closing them with the conveni- ence closing feature, they will remain in this position when opened using the conveni- ence opening feature.
Activating/deactivating the residual heat function It is possible to make use of the residual heat of the engine to continue heating the station- ary vehicle for up to 30 minutes after the engine has been switched off. The heating
time depends on the temperature that has been set. i The blower will run at a low speed regard-
less of the airflow setting.
i If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.
X Turn the key to position 0 in the ignition
lock or remove it.
X To activate: press the Ç rocker switch
up or down. The indicator lamp in the Ç rocker switch lights up.
X To deactivate: press the Ç rocker
switch up or down. The indicator lamp in the Ç rocker switch goes out.
i Residual heat is deactivated automati-
cally: Rafter about 30 minutes Rwhen the ignition is switched on Rif the battery voltage drops Rif the coolant temperature is too low
Auxiliary heating Important safety notes G WARNING Exhaust fumes are produced when the auxili- ary heating is in operation. Inhaling these exhaust fumes can be poisonous. You should therefore switch off the auxiliary heating in confined spaces without an extraction sys- tem, e.g. a garage. G WARNING When operating the auxiliary heating parts of the vehicle can get very hot. Make sure that the exhaust system does not under any cir- cumstances come into contact with easily ignitable material such as dry grass or fuels.
Operating the climate control system 313
The material could otherwise ignite and set the vehicle alight. Choose your parking spot accordingly. Operating the auxiliary heating is thus pro- hibited at filling stations or when your vehicle is being refuelled. You must therefore switch off the auxiliary heating at filling stations.
You can use COMAND (Y page 282) or the remote control to specify up to three depar- ture times, one of which may be preselected.
Switching the auxiliary heating/venti- lation on/off using the centre console rocker switch
! Operating the auxiliary heating/ventila- tion draws on the vehicle battery. After you have heated or ventilated the vehicle a maximum of two times, drive for a longer distance.
i Switch on the auxiliary heating regularly,
e.g. for about ten minutes every month.
The auxiliary heating heats the air in the vehi- cle interior to the set temperature without using the heat of the running engine. The aux- iliary heating is operated directly using the vehicle's fuel. For this reason, the tank con- tent must be at least at reserve fuel level to ensure that the auxiliary heating functions. The auxiliary heating/ventilation automati- cally adjusts to changes in temperature and weather conditions. For this reason, the aux- iliary heating could switch from ventilation mode to heating mode or from heating mode to ventilation mode. You cannot use the auxiliary ventilation to cool the vehicle interior to a temperature lower than the outside temperature.
Before switching on X Turn the key to position 2 in the ignition
lock.
X Set the temperature. The auxiliary heating/ventilation can be acti- vated even when the climate control is being controlled manually. Optimum comfort can be attained when the system is set to auto- matic mode. Set the temperature to 22 †. The auxiliary heating/ventilation can be acti- vated or deactivated using the remote control or the rocker switch on the centre console.
Rocker switch on the centre console The colours of the indicator lamps on the & rocker switch have the following mean- ings: Blue Red Yellow Departure time preselected
Auxiliary ventilation switched on Auxiliary heating switched on
(Y page 282)
Switching on auxiliary heating/ventila- tion X Press rocker switch : up or down.
The red or the blue indicator lamp in rocker switch : lights up.
Switching off auxiliary heating/ventila- tion X Press rocker switch : up or down.
The red or the blue indicator lamp in rocker switch : goes out.
Switching the auxiliary heating/venti- lation on/off using the remote control Your vehicle comes with one remote control. You may use two additional remote controls for your vehicle. For more information, please contact a qualified specialist workshop.
314 Operating the climate control system
The remote control has a maximum range of approximately 300 metres. This range is reduced by: Rsources of radio interference Rsolid objects between the remote control
and the vehicle
Rthe remote control being in an unfavoura-
ble position in relation to the vehicle Rtransmitting from an enclosed space i The optimum range can be achieved if you hold the remote control vertically, pointing upwards when you press one of the but- tons.
i A battery symbol appears in the display when the battery in the remote control is low. Replace the remote control battery (Y page 315).
Auxiliary heating remote control : Display ; . To check the status/set the depar-
ture time
= ^ To switch off the auxiliary heating/
ventilation
? u To switch on the auxiliary heating/
ventilation
A , To check the status/set the depar-
ture time
Switching on auxiliary heating/ventila- tion X Press the u button. ON is shown in the remote control display.
Switching off auxiliary heating/ventila- tion X Press the ^ button. OFF is shown in the remote control display. Checking the status of the auxiliary heat- ing/ventilation X Press the , or . button. The following messages can appear in the display: Display
Meaning The auxiliary heating/ ventilation is switched off. The auxiliary ventilation is switched on. The num- ber in the display shows the remaining time (in minutes) for the auxiliary ventilation. The auxiliary heating is switched on. The number in the display shows the remaining time (in minutes) for the auxiliary heating. A departure time has been activated. The departure time appears in the display. A departure time has been activated. The aux- iliary ventilation is cur- rently selected. The departure time appears in the display. A departure time has been activated. The aux- iliary heating is currently selected. The departure time appears in the dis- play.
Operating the climate control system 315
Setting the departure time X Press the , or . button repeatedly until the time to be changed appears in the display.
X Press the u and ^ buttons simulta-
neously. The Î symbol in the remote control dis- play flashes.
X Press the , or . button to set the
desired departure time.
i The longer you press the , or .
button, the faster the time changes.
X Press the u and ^ buttons simulta-
neously. The new departure time is stored.
Activating the set departure time X Press the , or . button repeatedly until the desired departure time appears in the display.
X Press the u button.
The Í symbol and the departure time appear in the display.
Deactivating a set departure time X Press the , or . button.
The status of the auxiliary heating is shown in the display.
X Press the . button.
The first departure time stored appears in the display. X Press the ^ button. The display message OFF appears in the display.
Switching the heater booster function on/off The heater booster function helps the engine reach its operating temperature faster during its warm-up phase, as well as helping to heat the vehicle interior faster. The heater booster function switches on if the outside tempera- ture is low and the coolant temperature is less
than 70 †. You can also activate the heater booster manually.
Button on the centre console i The fuel tank must be filled to at least
reserve fuel level. X Start the engine. X To switch on: briefly press rocker
switch : up or down. Red indicator lamp in rocker switch : lights up.
X To switch off: briefly press rocker
switch : up or down. Red indicator lamp in rocker switch : goes out.
Replacing the remote control battery One 6 V pin battery, type 2CR11108 is required.
X Prise apart the side arms of battery
cover ; and pull off battery cover ;.
X Remove old battery :.
316 Operating the climate control system
X Insert the new battery. Observe the polarity
signs on the back of the remote control when doing so.
X Slide battery cover ; back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions.
Adjusting the air vents
317
Problems with the auxiliary heating/ventilation
Display messages
FAIL
FAIL
© FAIL
Possible causes/consequences and M Solutions The starter battery is not charged sufficiently or the system is faulty. X Charge the starter battery. X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop.
The signal transmission between the transmitter and the vehicle is faulty. X Change your position in relation to the vehicle, moving closer if
necessary.
X Make another attempt to switch the auxiliary heating on or off
using the remote control.
There is not enough fuel in the fuel tank, or the auxiliary heating is faulty. X Refuel at the nearest filling station. X Make another attempt to switch on the auxiliary heating using
the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop.
i For virtually draught-free ventilation, adjust the sliders of the air vents to the centre position.
Adjusting the air vents Important safety notes G WARNING Very hot or very cold air can flow from the air vents. This could cause burns or frostbite to bare skin in the immediate vicinity of the vents. Keep bare skin away from these air outlets. If necessary, direct the airflow away to a different area of the vehicle interior.
In order to ensure the direct flow of fresh air through the air vents into the vehicle interior, please observe the following notes: Rkeep the air inlet on the bonnet free of blockages such as ice, snow or leaves. Rnever cover the vents or air inlets in the
vehicle interior.
318 Adjusting the air vents
Setting the centre air vents
: Fixed centre air vent ; Centre air vent, right = Centre vent thumbwheel, right ? Centre vent thumbwheel, left A Centre air vent, left X To open/close: turn thumbwheels =
and ? up or down.
Setting the side air vents
instance to cool its contents. The level of air- flow depends on the airflow and air distribu- tion settings. ! Close the air vent when heating the vehi-
cle. At high outside temperatures, open the air vent and activate the "cooling with air dehu- midification" function. Otherwise, temper- ature-sensitive items stored in the glove compartment could be damaged.
X To open: turn thumbwheel : anti-clock-
wise from position 3 to position 2.
X To close: turn thumbwheel : clockwise
from position 2 to position 3.
Setting the rear-compartment air vents Setting the centre vents in the rear com- partment
X To open/close: turn thumbwheel = up or
down.
i Side window demister vent : is never
completely shut, even if side air vent ; is shut.
Setting the glove compartment air vent When automatic climate control is activated, the glove compartment can be ventilated, for
: Rear-compartment air vent, left ; Rear-compartment air vent, right
= Rear-compartment air vent thumbwheel,
right
? Rear control panel for automatic climate
control
A Rear-compartment air vent thumbwheel,
left
X To open/close: turn thumbwheel = or
A to the right or left.
i In vehicles without rear-compartment air- conditioning system: close the rear-com- partment air vents when heating mode is activated as no warm air flows through the rear vents in the basic heating setting.
Setting the rear-compartment side air vents
: Rear-compartment side air vent ; Thumbwheel for rear-compartment side
air vent
X To open/close: turn thumbwheel ; to the
left or right.
Adjusting the air vents
319
320
Useful information ............................ 322
Running-in notes ............................... 322
Driving ............................................... 322
Automatic transmission ................... 329
Refuelling ........................................... 336
Parking ............................................... 339
Driving tips ........................................ 341
Driving systems ................................ 344
Towing a trailer ................................. 385321
322 Driving
Useful information
i This Owner's Manual describes all models
and all standard and optional equipment available to your vehicle at the time of pub- lication of the Owner's Manual. Country- specific deviations are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety-relevant systems and functions.
i Please read the information on qualified
specialist workshops (Y page 32).
Running-in notes Important safety notes G WARNING New brake pads/linings only have optimal braking performance after several hundred kilometres. Until then, compensate for this by applying greater force to the brake pedal. This also applies when brake pads/linings or brake discs have been changed.
The first 1,500 km If you treat the engine with sufficient care from the very start, you will be rewarded with excellent performance for the remainder of the engine's life. RDrive at varying vehicle speeds and engine
speeds for the first 1,500 km.
RAvoid overstraining the vehicle during this
period, e.g. driving at full throttle.
RChange gear in good time, before the rev counter needle is Ô of the way to the red area of the rev counter.
RDo not shift down a gear manually in order
to brake.
RTry to avoid depressing the accelerator
pedal beyond the point of resistance (kick- down).
RThe shift ranges 3, 2 or 1 should only be engaged when driving slowly, e.g. when driving in mountainous terrain.
After 1,500 km, you may gradually bring the vehicle up to full road and engine speeds. Additional running-in notes for AMG vehicles: Rdo not drive at speeds above 140 km/h for
the first 1,500 km.
Ronly allow the engine to reach a maximum
engine speed of 4,500 rpm briefly.
i You should also observe these notes on running in if the engine or parts of the drive train on your vehicle have been replaced.
Driving Important safety notes G WARNING Do not place any objects in the driver's foot- well. If you use a floormat or carpet in the driver's footwell, make sure that it is correctly secured and that there is sufficient clearance for the pedals. Do not place several floormats on top of one another. Loose objects or the floormats could other- wise get caught between the pedals if you accelerate or brake suddenly. You will then not be able to brake, declutch or accelerate as intended. This could lead to accidents and injury. G WARNING Do not change down for additional engine braking on a slippery road surface. This could cause the drive wheels to lose their grip and the vehicle could skid. This could cause you to lose control of your vehicle and cause an accident.
Driving 323
! Warm up the engine quickly. Do not use the engine's full performance until it has reached operating temperature. Only set the automatic transmission to the respective drive positions when the vehicle is stationary. Where possible, avoid spinning the drive wheels when pulling away on slippery roads. Otherwise, you could damage the drive train.
! S 63 AMG: at low engine oil temperatures (below +20 †), the maximum engine speed is restricted to protect the engine. To pro- tect the engine and maintain smooth engine operation, avoid driving at full throt- tle when the engine is cold.
KEYLESS-GO General notes Vehicles with KEYLESS-GO are equipped with a key featuring an integrated KEYLESS-GO function and a detachable Start/Stop button. The Start/Stop button must be inserted into the ignition lock and the key must be in the vehicle. Pressing the Start/Stop button several times in succession corresponds to the different key positions in the ignition lock. This is only the case if you are not depressing the brake pedal. If you depress the brake pedal and press the Start/Stop button, the engine starts immedi- ately.
Key positions Key
g To remove the key 1 Power supply for some consumers, such
as the windscreen wipers
2 Ignition (power supply for all consumers)
and drive position 3 To start the engine i If the key does not belong to the vehicle
it can still be turned in the ignition lock. However, the ignition will not be switched on The engine cannot be started.
X Position 0: if Start/Stop button : has not yet been pressed, this corresponds to the key being removed from the ignition.
X Position 1: press Start/Stop button :.
You can now activate the windscreen wip- ers, for example.
i If you then open the driver's door when in this position, the power supply is deactiva- ted.
X Position 2 (ignition): press Start/Stop but-
ton : twice.
i If you press Start/Stop button : once when in this position and the driver's door is open, the power supply is deactivated again.
324 Driving
Removing the Start/Stop button You can remove the Start/Stop button from the ignition lock and start the vehicle as nor- mal using the key. i You do not have to remove the Start/Stop
button from the ignition lock when you leave the vehicle.
quickly. The sound of the engine may change as a result.
Automatic transmission X Shift the transmission to position P.
The transmission position display in the multifunction display shows P.
i You can also start the engine when the
transmission is in position N.
Starting procedure with the key i To start the engine using the key instead of KEYLESS-GO, pull the Start/Stop button out of the ignition lock.
X Remove Start/Stop button : from ignition
lock ;.
i When you insert Start/Stop button : into ignition lock ;, the system needs approximately two seconds recognition time before you can use Start/Stop but- ton :.
Starting the engine Important safety notes G WARNING Never leave the engine running in enclosed spaces. The exhaust gases contain carbon monoxide. Inhaling exhaust fumes consti- tutes a health hazard and could lead to loss of consciousness or even death.
! Do not depress the accelerator pedal
when starting the engine.
General notes i Vehicles with a petrol engine: the
engine runs at a higher engine speed during a cold start so that the catalytic converter can reach operating temperature more
X To start a petrol engine: turn the key to
position 3 in the ignition lock (Y page 323) and release it as soon as the engine is running.
X To start a diesel engine: turn the key to
position 2 in the ignition lock (Y page 323). The % preglow indicator lamp in the instrument cluster lights up.
X When the % preglow indicator lamp
goes out, turn the key to position 3(Y page 323) and release it as soon as the engine is running.
i You can start the engine without preglow
if the engine is warm.
i You can also use the touch-start function.
To do this, turn the key to position 3 (Y page 323) and release it immediately. The engine then starts automatically.
Using KEYLESS-GO to start the engine G WARNING Your vehicle can be started using a valid KEY- LESS-GO key. For this reason, children should never be left 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.
i The Start/Stop button can be used to
start the vehicle manually without inserting the key into the ignition lock. The key must be in the vehicle and the Start/Stop button must be inserted in the ignition lock. This mode for starting the engine operates inde- pendently of the ECO start/stop automatic engine start function.
X Depress the brake pedal and keep it
depressed.
X To start a petrol engine: press the Start/
Stop button (Y page 323) once. The engine starts.
X To start a diesel engine: press the Start/
Stop button (Y page 323) once. Preglow is activated and the engine starts.
Pulling away Automatic transmission i It is only possible to shift the transmission
from position P to the desired position if you depress the brake pedal. Only then is the parking lock released.
X Depress the brake pedal and keep it
depressed.
X Shift the transmission to position D or R. X Release the brake pedal. X Carefully depress the accelerator pedal.
The electric parking brake (Y page 340) is automatically released.
i The vehicle locks centrally once you have pulled away. The locking knobs in the doors drop down. You can open the doors from the inside at any time. You can also deactivate the automatic lock- ing feature (Y page 276).
i Upshifts take place at higher engine
speeds after a cold start. This helps the catalytic converter to reach its operating temperature more quickly.
Driving 325
Hill start assist Hill start assist helps you when pulling away forwards or in reverse on an uphill gradient. It holds the vehicle for a short time after you have removed your foot from the brake pedal. This gives you enough time to move your foot from the brake pedal to the accelerator pedal and depress it before the vehicle begins to roll. G WARNING Never leave the vehicle when it is held by hill start assist. After approximately one second, hill start assist will no longer brake your vehi- cle and it could roll away.
X Take your foot off the brake pedal. i Once you have taken your foot off the
brake pedal, the vehicle is held for around one second.
X Pull away. Hill start assist will not function if: Ryou are pulling away on a level road or a
downhill gradient.
Rthe transmission is in position N. Rthe electric parking brake is applied. RESP® is malfunctioning.
ECO start/stop function General notes i Hybrid vehicles: the ECO start/stop
function cannot be deactivated.
The ECO start/stop function is only available in drive program E (drive program C on AMG vehicles). The ECO start/stop function switches the engine off automatically if the vehicle stops moving. When pulling away again, the engine starts automatically. The ECO start/stop function thereby helps you to reduce the fuel con- sumption and emissions of your vehicle.
326 Driving
The ECO start/stop function is activated each time the engine is switched on. If all condi- tions for automatic engine switch-off are ful- filled (Y page 326), the ¤ symbol is shown in green in the multifunction display. AMG vehicles: the AMG menu in the multi- function display additionally shows the Stop/ Start active message. If not all conditions are fulfilled, the ¤ symbol is shown in yellow. AMG vehicles: the AMG menu in the multi- function display additionally shows the Stop/ Start inactive message. If the ECO start/stop function is deactivated (Y page 327), the ¤ symbol is not shown. G WARNING If the engine is switched off and the ECO sym- bol is shown in green in the multifunction dis- play, the engine has been switched off auto- matically. All of the vehicle's systems remain active. If you open the door, unfasten your seat belt or remove your foot from the brake pedal, the engine will automatically start. The vehicle may begin moving. You could suffer serious or even fatal injury or cause an acci- dent resulting in injury or death. Never leave the vehicle while the ECO symbol in the multifunction display is shown in green or yellow. Always secure the vehicle against rolling away before leaving it.
! Always switch the ignition off and take the
key with you when leaving the vehicle.
Automatic engine switch-off The ECO start/stop function switches the engine off automatically if the vehicle is braked to a standstill and the brake remains depressed with the transmission in position D or N. i You can also activate the HOLD function when the vehicle is stationary if the engine has been switched off automatically. It is then not necessary to continue applying the brakes during the automatic stop
phase. When you depress the accelerator pedal, the engine starts automatically and the braking effect of the HOLD function is deactivated. Depress the accelerator pedal gently, as the engine must be started first.
The engine is only switched off if: Rthe outside temperature is within the range
that is suitable for the system.
Rthe engine is at normal operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged. Rthe system detects that the windscreen is
not misted up when the air-conditioning system is switched on.
Rthe bonnet is closed. Rthere are no active engine-related diagno-
ses.
Rthe driver's door is closed and the seat belt
is fastened.
Automatic engine start The engine is started automatically if you: Rrelease the brake pedal when HOLD is not activated and the transmission is in posi- tion D or N
Rshift the transmission to position R Rdepress the accelerator pedal Rswitch off the ECO start/stop function or
switch to drive program S or M
Runfasten your seat belt or open the driver's
door
The engine is also started automatically if: Rthe vehicle starts to roll. Rthe brake system requires this. Rthe system detects moisture on the wind- screen when the air-conditioning system is switched on.
Rthe temperature in the vehicle interior devi-
ates from the set range.
Rthe battery's charge status is too low.
Driving 327
Deactivating/activating the ECO start/ stop function General notes You can deactivate and activate the ECO start/stop function using COMAND APS (Y page 273). i You can also use the programmable but- ton (Y page 119) to activate and deactivate the ECO start/stop function if you have assigned this function to the button.
Switching off X Deactivate the ECO start/stop function
using COMAND APS (Y page 273). All vehicles except for AMG vehicles: the ¤ symbol in the multifunction display goes out. AMG vehicles: the ¤ symbol goes out and the Stop/Start deactivated mes- sage is shown in the AMG menu of the mul- tifunction display.
i If drive program S or M has been selected,
the ECO start/stop function is always deactivated.
Activating X Activate the ECO start/stop function using
COMAND APS (Y page 273). All vehicles except AMG vehicles: the ¤ symbol appears in the multifunction display. AMG vehicles: the ¤ symbol is shown in the multifunction display. In addition, the Stop/Start active message is shown in the AMG menu. If not all conditions for automatic engine switch-off (Y page 326) are fulfilled, the Stop/Start inactive message appears. i If you switch on the ECO start/stop func- tion while drive program S or M is selected, the drive program automatically switches to E (drive program C on AMG vehicles).
328 Driving
Problems with the engine Problem The engine does not start. The starter motor can be heard.
Possible causes/consequences and M Solutions RThere is a malfunction in the engine electronics. RThere is a malfunction in the fuel supply. X Before attempting to start the engine again, turn the key in the
ignition back to position 0 or press the Start/Stop button repeatedly until all indicator lamps in the instrument cluster go out.
X Try to start the engine again (Y page 324). Avoid excessively
long and frequent attempts to start the engine, as this will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop. The fuel tank is empty. X Refuel the vehicle.
The on-board voltage is too low because the battery is too weak or discharged. X Jump-start the vehicle (Y page 507). If the engine does not start despite attempts to jump-start it: X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high. X Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again. If the engine still does not start: X Consult a qualified specialist workshop. There is a malfunction in the engine electronics or in a mechanical component of the engine management system. X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con- verter and damage it.
X Have the cause rectified immediately at a qualified specialist
workshop.
The engine does not start. The starter motor can be heard. The reserve fuel warning lamp is lit and the fuel gauge display shows 0.
The engine does not start. You cannot hear the starter motor.
Vehicles with a petrol engine: The engine is not run- ning smoothly and is misfiring.
Automatic transmission 329
Problem The coolant tempera- ture display is showing more than 120 †. A display message may also appear in the mul- tifunction display and a warning tone may sound.
Possible causes/consequences and M Solutions The coolant level is too low. The coolant is too hot and the engine is no longer being cooled sufficiently. X Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 480). Observe the warning
notes as you do so and top up the coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty. The coolant is too hot and the engine is no longer being cooled sufficiently. X If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop-start traffic.
Automatic transmission Important safety notes G WARNING The movement of the pedals must not be impaired in any way. Do not keep any objects in the driver's footwell. Make sure that floor- mats or carpets are correctly secured and that there is sufficient clearance for the ped- als. Do not place several floormats on top of one another. G WARNING Do not change down for additional engine braking on a slippery road surface. This could cause the drive wheels to lose their grip and the vehicle could skid. This could cause you to lose control of your vehicle and cause an accident.
DIRECT SELECT lever Overview of transmission positions The DIRECT SELECT lever is on the right of the steering column.
P Park position with parking lock R Reverse gear N Neutral D Drive i The DIRECT SELECT lever always returns to its original position. The current trans- mission position P, R, N or D appears in the transmission position display (Y page 331) in the multifunction display.
Engaging park position P X Push the DIRECT SELECT lever in the direc-
tion of arrow P.
330 Automatic transmission
i The automatic transmission shifts into
park position P automatically: Rif you open the driver's door while the
vehicle is stationary in transmission posi- tion D or R
Rif you open the door while travelling at
very low speeds in transmission position D or R
i Depressing the brake and pushing the DIRECT SELECT lever up or down disen- gages the parking lock. The transmission is in N neutral. In order to shift from park position P directly into R or D: Rdepress the brake pedal and Rpush the DIRECT SELECT lever up or
down past the first point of resistance
! If the engine speed is too high, do not shift
the automatic transmission directly from D to R, from R to D or directly to P. Other- wise, the automatic transmission could be damaged.
Engaging park position P automatically Park position P is automatically engaged if: Ryou switch off the engine using the key and
remove the key
Ryou switch off the engine using the Start/
Stop button and open the driver's door RHOLD (Y page 357) or DISTRONIC PLUS (Y page 348) brake your vehicle until it is stationary and at least one of the following conditions is fulfilled:
the engine is switched off. the driver's door is open and the seat belt
