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Notes on using dual-zone automatic climate control The following contains notes and recommendations on optimum use of dual- zone automatic climate control. RActivate climate control using the à and ¿ buttons. The indicator lamps above the à and ¿ buttons light up. RSet the temperature to 72 ‡ (22 †). ROnly use the "defrosting" function briefly
until the windshield is clear again.
ROnly use "air-recirculation" mode briefly, e.g. if there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up as, in air-recirculation mode, no fresh air is drawn into the vehicle.
RUse the ZONE function to adopt the
temperature settings on the driver's side for the front-passenger side as well. The indicator lamp above the á button goes out.
Overview of climate control systems
133
Control panel for 3-zone automatic climate control
Canada only
Front control panel
: To set climate control to automatic (Y page 135) ; To defrost the windshield (Y page 137) = To switch the ZONE function on/off (Y page 137) ? Display A To activate/deactivate air-recirculation mode (Y page 139) B To activate/deactivate the residual heat function (Y page 139) C To activate/deactivate cooling with air dehumidification (Y page 134) D To switch the rear window defroster on/off (Y page 138) E To switch climate control on/off (Y page 134) F To set the temperature, right (Y page 136) G To set climate control to automatic (FOCUS/MEDIUM/DIFFUSE) (Y page 135) H To set the airflow (Y page 137) I To set the air distribution (Y page 136) J To set the temperature, left (Y page 136)
Rear control panel
K To increase the temperature (Y page 136) L Display M To reduce the temperature (Y page 136)
134 Operating the climate control system
Notes on using 3-zone automatic climate control The following contains instructions and recommendations to enable you to get the most out of your automatic climate control. RActivate climate control using the à and ¿ buttons. The indicator lamps above the à and ¿ buttons light up. You can also set the airflow and air distribution of the automatic climate control to one of three levels (FOCUS/MEDIUM/DIFFUSE). You can set the desired level using button G. The MEDIUM level is recommended.
RSet the temperature to 72 ‡ (22 †). ROnly use the "defrosting" function briefly
until the windshield is clear again.
ROnly use "air-recirculation" mode briefly, e.g. if there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up as, in air-recirculation mode, no fresh air is drawn into the vehicle.
RUse the ZONE function to adopt the
temperature settings on the driver's side for the front-passenger side and the rear compartment as well. The indicator lamp above the á button goes out.
RUse the residual heat function if you want
to heat or ventilate the vehicle interior when the ignition is switched off. The "residual heat" function can only be activated or deactivated with the ignition switched off.
Operating the climate control system Activating/deactivating climate control Important information G WARNING When the climate control system is deactivated, the outside air supply and circulation are also deactivated. Only choose this setting for a short time. Otherwise the
windows could fog up, impairing visibility and endangering you and others.
i Switch on climate control primarily using
the à button (Y page 135).
Activating/deactivating X Turn the SmartKey to position 2 in the
ignition lock.
X To switch on: press the à button.
The indicator lamp above the à button lights up. Airflow and air distribution are set to automatic mode.
or X Press the ^ button.
The indicator lamp above the ^ button goes out. The previously selected settings come into effect again.
X To switch off: press the ^ button.
The indicator lamp above the ^ button lights up.
Activating/deactivating cooling with the 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 dehumidified according to the temperature selected. G WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is normal and not a sign that there is a malfunction.
Operating the climate control system 135
i The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer.
Activating/deactivating X To activate: press the ¿ button.
The indicator lamp above the ¿ button lights up.
X To switch off: press the ¿ button.
The indicator lamp above the ¿ button goes out. The cooling with air dehumidification function has a delayed switch-off feature.
Problems with the cooling with air dehumidification function When you press the ¿ button, the indicator lamp in the button flashes three times or remains off. You can no longer switch on the cooling with air dehumidification function. X Consult a qualified specialist workshop.
Setting climate control to automatic G WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.
In automatic mode, the set temperature is maintained automatically at a constant level. The system automatically regulates the temperature of the dispensed air, the airflow and the air distribution. Automatic mode will achieve optimal operation if cooling with air dehumidification is also activated. If desired, cooling with air dehumidification can be deactivated.
X Turn the SmartKey to position 2 in the
ignition lock.
X Set the desired temperature. X To activate: press the à button.
The indicator lamp above the à button lights up. Automatic air distribution and airflow are activated.
i 3-zone automatic climate control: when
automatic mode is activated, you can select a climate mode setting (Y page 135).
X To deactivate: press the air distribution
button. Dual-zone automatic climate control: press button F(Y page 131). 3-zone automatic climate control: press button I(Y page 133). The indicator lamp above the à button goes out.
or X Press the airflow button.
Dual-zone automatic climate control: press button G(Y page 131). 3-zone automatic climate control: press button H(Y page 133). The indicator lamp above the à button goes out.
Adjusting the climate mode settings (AIR FLOW) This function is only available with 3-zone automatic climate control. The climate mode settings are especially effective at high temperatures. You can select the following climate mode settings in automatic mode: FOCUS
high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting DIFFUSE low airflow that is set slightly
warmer and with less draft
136 Operating the climate control system
X To increase/reduce the temperature in the rear compartment using the front control panel: press the á button. The indicator lamp above the á button goes out.
X Press button F or J up or down
(Y page 133). Only change the temperature setting in small increments. Start at 72 ‡ (22 †).
X To increase/reduce the temperature in
the rear compartment using the rear control panel: press button K or M(Y page 133). Only change the temperature setting in small increments. Start at 72 ‡ (22 †).
Setting the air distribution Air distribution settings ¯ Directs air through the defroster vents P Directs air through the center and side
air vents
O Directs the airflow through the
footwell air vents
S Directs the airflow through the center
and side air vents as well as the footwell air vents11
b Directs the airflow through the defroster, center and side air vents11, 12
a Directs air through the defroster and
footwell vents
i Regardless of the air distribution setting, airflow is always directed through the side air vents.. The side air vents can only be closed when the controls on the side air vents are turned downwards.
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the à button. X Press button G up or down and select the
desired level (Y page 133)
Setting the temperature Dual-zone automatic climate control Different temperatures can be set for the driver's and front-passenger sides. X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press button E or
H up or down (Y page 131). Only change the temperature setting in small increments. Start at 72 ‡ (22 †).
3-zone automatic climate control
Automatic climate control climate zones You can select different temperature settings for the driver's and front-passenger sides as well as for the rear compartment. X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce the temperature in the front compartment: press button F or J up or down (Y page 133). Only change the temperature setting in small increments. Start at 72 ‡ (22 †).
11 Cabriolet only. 12 Coupe: Canada only.
Operating the climate control system 137
Dual-zone automatic climate control X Turn the SmartKey to position 2 in the
ignition lock.
X Press switch F up or down repeatedly until the desired symbol appears in the display (Y page 131).
3-zone automatic climate control X Turn the SmartKey to position 2 in the
ignition lock.
X Press switch I up or down repeatedly until the desired symbol appears in the display (Y page 133).
When the buttons for temperature, airflow or air distribution are activated, the temperature setting for the driver's side is not adopted for the other climate control zones. X To switch off: press the á button.
The indicator lamp above the á button goes out. Dual-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side. 3-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side and the rear compartment.
Setting the airflow Dual-zone automatic climate control X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press button G up
or down (Y page 131).
3-zone automatic climate control X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press button H up
or down (Y page 133).
Switching the ZONE function on/off X To switch on: press the á button.
The indicator lamp above the á button lights up. Dual-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side. 3-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side and the rear compartment.
13 Depending on the outside temperature.
Defrosting the windshield You can use this function to defrost the windshield or to defrost the inside of the windshield and the side windows. i You should only select the defrosting
function until the windshield is clear again.
X Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the ¬ button.
The indicator lamp above the ¬ button lights up. The climate control system switches to the following functions: Rcooling with air dehumidification on Rhigh airflow13
Rhigh temperature13
Rair distribution to the windshield andfront side windows
Rair-recirculation mode off
X To switch off: press the ¬ button.
The indicator lamp above the ¬ button goes out. The previously selected settings come into effect again. The cooling with air dehumidification function remains on. Air- recirculation mode remains deactivated.
or
138 Operating the climate control system
X Press the à button.
The indicator lamp above the ¬ button goes out. Airflow and air distribution are set to automatic mode.
or X Automatic climate control: press
temperature button E or H up or down (Y page 131). Automatic climate control: press temperature button F or J up or down (Y page 133).
or X Dual-zone automatic climate control:
press switch G up or down (Y page 131). 3-zone automatic climate control: press button H up or down (Y page 133).
MAX COOL maximum cooling The MAX COOL function is only available in vehicles for the USA. MAX COOL is only operational when the engine is running. When you activate MAX COOL, climate control switches to the following functions: Rmaximum cooling Rmaximum airflow Rair-recirculation mode on X To activate: press the Ù button.
The indicator lamp above the button lights up.
X To deactivate: press the Ù button
again. The indicator lamp goes out. The previously selected settings come into effect again.
Defrosting the windows Windows fogged up on the inside X Activate the cooling with air
dehumidification function ¿. X Activate automatic mode Ã. X If the windows continue to fog up, activate
the defrosting function (Y page 137).
i You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside X Switch on the windshield wipers. X Automatic climate control: press switch
F up or down (Y page 131) until the P or O symbol appears in the display.
X Automatic climate control: press button
I up or down (Y page 133) until the P or O symbol appears in the display.
i You should only select this setting until
the windshield is clear again.
Rear window defroster Activating/deactivating G WARNING Any accumulation of snow and ice should be removed from the rear window before driving. Visibility could otherwise be impaired, endangering you and others.
The rear window defroster has a high current draw. You should therefore switch it off as soon as the window is clear as it only switches off automatically after several minutes. If the battery voltage is too low, the rear window defroster may switch off.
Operating the climate control system 139
X Turn the SmartKey to position 2 in the
ignition lock.
X Press the ¤ button.
The indicator lamp above the ¤ button lights up or goes out.
Problems with the rear window defroster The rear window defroster has deactivated itself 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 defroster is activated again automatically.
Activating/deactivating air- recirculation mode You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle from outside. The air already inside the vehicle will then be recirculated. The operation of air-recirculation mode is the same for all control panels. G WARNING Fogged windows impair visibility, endangering you and others. If the windows begin to fog on the inside, switching off the air recirculation mode immediately should clear interior window fogging. If interior window fogging persists, make sure the air conditioning is activated, or press the ¬ button.
X Turn the SmartKey to position 2 in the
ignition lock.
X To activate: press the g button.
The indicator lamp above the g button lights up.
14 Automatic climate control only.
i In the event of high pollution levels14 or at
high outside temperatures, air- recirculation mode is automatically activated. When air-recirculation mode is activated automatically, the indicator lamp above the g button does not light up. Outside air is added after about 30
minutes.X To switch off: press the g button.
The indicator lamp above the g button goes out.
i Air-recirculation mode deactivates
automatically: Rafter approximately five minutes if
outside temperatures are less than about 41 ‡ (5 †)
Rafter approximately five minutes if cooling with air dehumidification is deactivated
Rafter approximately 30 minutes if outside
temperatures are over about 41 ‡ (5 †)
Activating/deactivating the residual heat function The residual heat function is only available in vehicles for Canada with automatic climate control. It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set. Coupe: the residual heat function only works optimally if the side windows and panorama roof with power tilt/sliding panel are closed. Cabriolet: the residual heat function only works optimally if the soft top is closed. i The blower will run at a low speed
regardless of the airflow setting.
140 Setting the air vents
i If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.
i It is possible that the residual heat
function may be activated automatically an hour after the SmartKey is removed. The vehicle is then ventilated for 30 minutes to dry the air-conditioning system.
X Turn the SmartKey to position 0 in the
ignition lock or remove it.
X To activate: press the Ì button.
The indicator lamp above the Ì button lights up.
X To switch off: press the Ì button.
The indicator lamp above the Ì button goes out.
i Residual heat is deactivated
automatically: Rafter about 30 minutes Rwhen the ignition is switched on Rif the battery voltage drops Rif the coolant temperature is too low
Setting the air vents Important safety notes G WARNING When operating the climate control, the air that enters the passenger compartment through the air vents can be very hot or very cold (depending on the set temperature). This could cause burns or frostbite to unprotected skin in the immediate area of the air vents. Always keep sufficient distance between unprotected parts of the body and the air vents. If necessary, use the air distribution adjustment to direct the air to air vents in the vehicle interior that are not in the immediate area of unprotected skin.
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 between the windshield and the hood free of blockages, such as ice, snow or leaves.
Rnever cover the air vents or air intake grille
in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center position.
Setting the center air vents
: Center air vent, left ; Center air vent, right = Center vent thumbwheel, right ? Center vent thumbwheel, left X To open/close: turn thumbwheels =
and ? up or down.
Setting the side air vents
Setting the air vents
141
X To open/close: turn thumbwheel = up or
down.
i Side window defroster vent : is never completely shut, even if side air vent ; is shut.
Setting the rear-compartment air vents Setting the center vents in the rear compartment
Setting the glove box air vent When automatic climate control is activated, the glove box can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings. ! Close the air vent when heating the
vehicle. At high outside temperatures, open the air vent and activate the "cooling with air dehumidification" function. Otherwise, temperature-sensitive items stored in the glove box could be damaged.
: Air vent thumbwheel ; Air vent X To open/close: turn thumbwheel :
clockwise or counter-clockwise.
: Rear-compartment air vent thumbwheel ; Rear-compartment air vent, right = Rear control panel for automatic climate
control15
? Rear-compartment air vent, left X To open/close: turn thumbwheel : up or
down.
AIRSCARF, setting the vents G WARNING When operating the climate control, the air that enters the passenger compartment through the air vents can be very hot or very cold (depending on the set temperature). This could cause burns or frostbite to unprotected skin in the immediate area of the air vents. Always keep sufficient distance between unprotected parts of the body and the air vents. If necessary, use the air distribution adjustment to direct the air to air vents in the vehicle interior that are not in the immediate area of unprotected skin.
15 Canada only.
142 Setting the air vents
You can adjust the blower output of AIRSCARF vents : using the AIRSCARF button (Y page 108).
Useful information ............................ 144
Breaking-in notes .............................. 144
Driving ............................................... 144
Automatic transmission ................... 149
Refueling ............................................ 155
Parking ............................................... 158
Driving tips ........................................ 160
Driving systems ................................ 164143
144 Driving
Useful information
i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.
i Please read the information on qualified
specialist workshops (Y page 23).
Breaking-in notes The first 1000 miles (1500 km) The more you look after the engine when it is new, the more satisfied you will be with its performance in the future. RDrive at varying vehicle speeds and engine speeds for the first 1000 miles (1500 km) for this reason.
RAvoid overstraining the vehicle during this
period, e.g. driving at full throttle.
RChange gear in good time, at the latest
when the tachometer needle is 2/3 of the way to the red area in the tachometer display.
RIf possible, do not depress the accelerator
pedal past the point of resistance (kickdown).
ROnly select shift ranges 3, 2 or 1 when
driving slowly, e.g. in mountainous terrain. After 1000 miles (1500 km), you can increase the engine speed gradually and bring the vehicle up to full speed. 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.
i Always observe the respective speed
restrictions.
Driving Important safety notes G WARNING Make sure absolutely no objects are obstructing the pedals' range of movement. Keep the driver's footwell clear of all obstacles. If there are any floormats or carpets in the footwell, make sure the pedals still have sufficient clearance. During sudden driving or braking maneuvers the objects could get caught between the pedals. You could then no longer brake or accelerate. This could lead to accidents and injury. G WARNING On slippery road surfaces, never downshift in order to obtain braking action. This could result in drive wheel slip and reduced vehicle control. Your vehicle's ABS will not prevent this type of loss of control. G WARNING It is dangerous to shift the automatic transmission out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly on the brake pedal, the vehicle could accelerate quickly forward or in reverse. You could lose control of the vehicle and hit someone or something. Only shift into gear when the engine is idling normally and when your right foot is firmly on the brake pedal.
! Warm up the engine quickly. Do not use the engine's full performance until it has reached operating temperature. Only shift the automatic transmission to the desired drive position when the vehicle is stationary. Where possible, avoid spinning the drive wheels when pulling away on slippery roads. You could otherwise damage the drive train.
SmartKey positions SmartKey
g To remove the SmartKey
(shift the transmission to position P)
1 Power supply for some consumers, such
as the windshield wipers
2 Ignition (power supply for all consumers)
and drive position 3 To start the engine If the SmartKey is in position 0 in the ignition lock for an extended period of time, it can no longer be turned in the ignition lock. The steering is then locked. To unlock, remove the SmartKey and reinsert it into the ignition lock. The steering is locked when you remove the SmartKey from the ignition lock. i The SmartKey can be turned in the
ignition lock even if it is not the correct SmartKey for the vehicle. The ignition is not switched on. The engine cannot be started.
KEYLESS-GO General information Vehicles with KEYLESS-GO are equipped with a SmartKey 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 SmartKey must be in the vehicle. Pressing the Start/Stop button several times in succession corresponds to the different
Driving 145
SmartKey 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 immediately. The Start/Stop button can be removed from the ignition lock. Then, you can insert the SmartKey into the ignition lock. i You do not have to remove the Start/Stop
button from the ignition lock when you leave the vehicle. However, you should always take the SmartKey with you when leaving the vehicle. The vehicle can be started with the Start/Stop button and the electrical equipment can be operated while the SmartKey is in the vehicle.
: Start/Stop button ; Ignition lock X Insert Start/Stop button : into ignition
lock ;.
i When you insert Start/Stop button :
into ignition lock ;, the system requires a detection time of approximately two seconds before you can use Start/Stop button :.
146 Driving
Start/Stop button = USA only ? Canada only X Position 0: if Start/Stop button : has not yet been pressed, this corresponds to the SmartKey being removed from the ignition.
X Position 1: press Start/Stop button :.
You can now activate the windshield wipers, for example.
i If you then open the driver's door when in
this position, the power supply is deactivated.
X Position 2 (ignition): press Start/Stop
button : 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.
As soon as the ignition is switched on, all the indicator lamps in the instrument cluster light up. If an indicator lamp does not go out after the engine is started or if it lights up while the vehicle is in motion, see (Y page 241).
Starting the engine Important safety notes G WARNING Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death.
Do not run the engine in confined areas (such as a garage) which are not properly ventilated. If you think that exhaust gas fumes are entering the vehicle while driving, have the cause determined and corrected immediately. If you must drive under these conditions, drive only with at least one window fully open at all times.
! Do not depress the accelerator pedal
when starting the engine.
i The catalytic converter preheats for up to 30 seconds after a cold start. The sound of the engine may change during this time.
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 SmartKey i To start the engine using the SmartKey instead of KEYLESS-GO, pull the Start/ Stop button out of the ignition lock.
X Turn the SmartKey to position 3 in the
ignition lock (Y page 145) and release it as soon as the engine is running.
Using KEYLESS-GO to start the engine G WARNING As long as the SmartKey is in your vehicle, the vehicle can be started. Therefore, never leave children unattended in the vehicle, as they could otherwise accidentally start the engine. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. A child's unsupervised access to a vehicle could result in an accident and/or serious personal injury.
Driving 147
i The Start/Stop button can be used to
start the vehicle without inserting the SmartKey into the ignition lock. The Start/ Stop button must be inserted into the ignition lock and the SmartKey must be in the vehicle.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button (Y page 145)
once. The engine starts.
Pulling away Automatic transmission G WARNING It is dangerous to shift the automatic transmission out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly on the brake pedal, the vehicle could accelerate quickly forward or in reverse. You could lose control of the vehicle and hit someone or something. Only shift into gear when the engine is idling normally and when your right foot is firmly on the brake pedal.
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 locking feature (Y page 210).
i Upshifts take place at higher engine
speeds after a cold start. This helps the catalytic converter to reach its operating temperature more quickly.
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 vehicle and it could roll away.
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 selector lever lock released.
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 Depress the brake pedal and keep it
depressed.
X Shift the transmission to position D or R. X Release the parking brake (Y page 159). X Release the brake pedal. X Carefully depress the accelerator pedal. ! If a warning tone sounds and the Release Park. Brake message appears in the multifunction display, the parking brake is still applied. Release the parking brake.
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 parking brake is applied. RESP® is malfunctioning.
148 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 SmartKey in the ignition back to position 0 or press the Start/Stop button repeatedly until all indicator lamps in the instrument cluster go out.
The engine does not start. You cannot hear the starter motor.
X Try to start the engine again (Y page 146). Avoid excessively
long and frequent attempts to start the engine as these will drain the battery.
If the engine does not start after several attempts: X Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center.
The on-board voltage is too low because the battery is too weak or discharged. X Jump-start the vehicle (Y page 299). If the engine does not start despite attempts to jump-start it: X Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center.
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, e.g. an authorized
Mercedes-Benz Center.
Automatic transmission 149
Problem The engine is not running smoothly and is misfiring.
The coolant temperature gauge shows a value above 248 ‡ (120 †).
Possible causes/consequences and M Solutions There is a malfunction in the engine electronics or a mechanical component of the engine management system. X Only depress the accelerator pedal slightly. X Have the cause rectified immediately at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz Center. Otherwise, non-combusted fuel may get into the catalytic converter and damage it.
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 276). Observe the warning
notes as you do so and add coolant if necessary.
Selector lever Overview of transmission positions
Selector lever P Park position with selector lever lock R Reverse gear N Neutral D Drive
Automatic transmission Important safety notes G WARNING It is dangerous to shift the automatic transmission out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly on the brake pedal, the vehicle could accelerate quickly forward or in reverse. You could lose control of the vehicle and hit someone or something. Only shift into gear when the engine is idling normally and when your right foot is firmly on the brake pedal. G WARNING Keep in mind that turning off the engine alone only will shift the automatic transmission into neutral position N automatically. Always shift the automatic transmission into park position P before turning off the engine. Otherwise the vehicle could roll away which could result in an accident and/or serious personal injury.
150 Automatic transmission
Transmission position and drive program display
: Transmission position display ; Drive program display The indicators light up when the SmartKey is inserted into the ignition lock. The indicators go out when the SmartKey is removed from the ignition lock. ! If the transmission position display in the
multifunction display is not working, you should pull away carefully to check whether the desired transmission position is engaged. Select transmission position D. Do not restrict the shift range.
Transmission positions B Park position
Do not shift the transmission into position P(Y page 158) unless the vehicle is stationary. The parking lock should not be used as a brake when parking. In addition to engaging the parking lock, you must always apply the parking brake to secure the vehicle. The SmartKey can only be removed if the transmission is in position P. If the SmartKey is removed from the ignition lock, the selector lever is locked. If the vehicle electronics are malfunctioning, the selector lever may be locked in position P. To release the selector lever lock, see "Releasing the parking lock manually" (Y page 155). Have the vehicle electronics checked at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center, immediately. C Reverse gear
Only shift the transmission to R when the vehicle is stationary.
A Neutral
Do not shift the transmission to N while driving. The transmission could otherwise be damaged. No power is transmitted from the engine to the drive wheels. Releasing the brakes will allow you to move the vehicle freely, e.g. to push it or tow it. If ESP® is deactivated or faulty: only shift the transmission to position N if the vehicle is in danger of skidding, e.g. on icy roads. ! Rolling in neutral N can damage
the drive train.
7 Drive
The automatic transmission changes gear automatically. All forward gears are available.
Changing gear The automatic transmission shifts to the individual gears automatically when it is in transmission position D. This automatic gearshifting behavior is determined by: Ra shift range restriction, if selected Rthe selected drive program
E/S or M (vehicles with dynamic handling package) (Y page 151)
Rthe position of the accelerator pedal Rthe road speed
Automatic transmission 151
Driving tips Kickdown Use kickdown for maximum acceleration. X Vehicles for USA: fully depress the
accelerator pedal. The transmission shifts to a lower gear depending on the engine speed.
X Vehicles for Canada: depress the
accelerator pedal beyond the pressure point. The transmission shifts to a lower gear depending on the engine speed.
Working on the vehicle G WARNING When working on the vehicle, engage the parking brake and shift the automatic transmission into park position P. Otherwise the vehicle could roll away which could result in an accident and/or serious personal injury.
Program selector button General information The program selector button allows you to choose between different driving characteristics.
Program selector button
152 Automatic transmission
Steering wheel paddle shifters
Program selector button on vehicles with the dynamic handling package E Economy
Comfortable, economical driving Sporty driving style Manual gearshifting
S Sport M Manual
i For further information on the automatic
drive program, see .
Only change from automatic drive program E or S to manual drive program M when the vehicle is stationary. X Press program selector button :
repeatedly until the letter for the desired gearshift program appears in the multifunction display.
i The automatic transmission shifts to
automatic drive program E each time the engine is started.
: Left-hand steering wheel paddle shifter ; Right-hand steering wheel paddle shifter In the automatic drive program, you can restrict or derestrict the shift range by using the steering wheel paddle shifters (Y page 153). In the manual drive program, you can change gear using the steering wheel paddle shifters or the selector lever (Y page 154). i You can only change gear with the
steering wheel paddle shifters when the transmission is in position D.
Automatic drive program Drive program E is characterized by the following: Rthe vehicle pulling away more gently in forward and reverse gears, unless the accelerator pedal is depressed fully
Rincreased sensitivity. This improves driving
stability on slippery road surfaces, for example
Rthe automatic transmission shifting up sooner. This results in the vehicle being driven at lower engine speeds and the wheels being less likely to spin
Drive program S is characterized by the following: Rsporty engine settings Rthe vehicle pulling away in first gear
Automatic transmission 153
Rthe automatic transmission shifting up
later
Rthe fuel consumption possibly being higher
as a result of the later automatic transmission shift points
Shift ranges Introduction When the automatic transmission is in position D, it is possible to restrict or derestrict the shift range (Y page 153). The shift range selected is shown in the multifunction display. The automatic transmission shifts only as far as the selected gear. Shift range = You can use the engine's braking
effect.
5 To use the braking effect of the
engine on downhill gradients and for driving: Ron steep mountain roads Rin mountainous terrain Rin arduous conditions
4 To use the braking effect of the
engine on extremely steep downhill gradients and on long downhill stretches
Restricting the shift range X Press the selector lever to the left towards
D–.
or X Pull the left-hand steering wheel paddle
shifter. The automatic transmission shifts down one gear and restricts the shift range to the relevant gear.
i If the engine exceeds the maximum engine speed when shifting down, the
automatic transmission protects against engine damage by not shifting down.
i If the maximum engine speed for the shift
range is reached and you continue to accelerate, the automatic transmission shifts up in order to prevent the engine from overrevving, even if the shift range is restricted.
Derestricting the shift range X Briefly press the selector lever to the right
towards D+.
or X Pull the right-hand steering wheel paddle
shifter. The shift range is derestricted.
Clearing the shift range restriction X Press and hold the selector lever towards
D+ until D is shown once more in the multifunction display.
or X Pull and hold the right-hand steering wheel paddle shifter until D is shown again in the multifunction display. The automatic transmission shifts from the current shift range directly to D.
Selecting the ideal shift range X Press the selector lever to the left towards
D– and hold it in position.
or X Pull the left-hand steering wheel paddle
shifter and hold it in position. The automatic transmission shifts to the gear which allows optimum acceleration and deceleration. To do this, the automatic transmission shifts down one or more gears.
i If you brake the vehicle or stop without shifting down, the automatic transmission will shift down to a gear that will allow the vehicle to accelerate or pull away again. i To avoid overrevving the engine when
downshifting, the automatic transmission does not shift to a lower gear if this would result in the maximum engine speed being exceeded.
Kickdown You can also use kickdown for maximum acceleration in manual drive program M. X Vehicles for USA: fully depress the
accelerator pedal. The transmission shifts to a lower gear depending on the engine speed.
X Vehicles for Canada: depress the
accelerator pedal beyond the pressure point. The transmission shifts to a lower gear depending on the engine speed.
i During kickdown, you cannot change gear using the steering wheel paddle shifters or the selector lever.
Switching off the manual drive program X Vehicles with the dynamic handling package: press the program selector button (Y page 151) repeatedly until E or S appears in the multifunction display.
154 Automatic transmission
Manual drive program Switching on the manual drive program The manual drive program is only available for vehicles with the dynamic handling package. Manual drive program M is different from drive program S with regard to spontaneity, responsiveness and smoothness of gear changes. Manual drive program M can be selected using the program selector button. You can change gears using the steering wheel paddle shifters or the selector lever in manual drive program M if the transmission is in position D. The gear selected is shown in the multifunction display. X Press the program selector button
(Y page 151) repeatedly until M appears in the multifunction display.
Upshifting i Vehicles with the dynamic handling package: if the maximum engine speed for the shift range is reached and you continue to accelerate, the automatic transmission shifts up, except when manual drive program M is selected.
X Briefly press the selector lever to the right
towards D+.
or X Pull the right-hand steering wheel paddle
shifter (Y page 152). The automatic transmission shifts up to the next gear.
Downshifting X Briefly press the selector lever to the left
towards D–.
or X Pull the left-hand steering wheel paddle
shifter (Y page 152). The automatic transmission shifts down to the next gear.
Refueling 155
Problems with the transmission Problem The transmission has problems shifting gear.
Possible causes/consequences and M Solutions The transmission is losing oil. X Have the transmission checked at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz Center, immediately.
The acceleration ability is deteriorating. The transmission no longer changes gear.
The transmission is in emergency mode. It is only possible to shift into second gear and reverse gear. X Stop the vehicle. X Shift the transmission to position P. X Switch off the engine. X Wait at least 10 seconds before restarting the engine. X Shift the transmission to position D or R.
If D is selected, the transmission shifts into second gear; if R is selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz Center, immediately.
Releasing the parking lock manually In the event of an electrical malfunction, it is possible to release the selector lever lock manually to move it out of position P, e.g. if you wish to tow the vehicle away.
! Do not use any sharp-edged objects to remove the selector lever gaiter from the center console. This could damage the selector lever gaiter.
X Apply the parking brake. X Pry off selector lever gaiter : with a flat, blunt object, (e.g. a screwdriver wrapped in cloth) from the right-hand edge, pulling it up and out.
X Press release buttons ; down and
simultaneously move the selector lever out of position P. The selector lever can now be moved freely until it is returned to position P.
Refueling Important safety notes G WARNING Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline.
156 Refueling
Turn off the engine before refueling. Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact. Direct skin contact with fuels and the inhalation of fuel vapors are damaging to your health. G WARNING Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gasoline to spray back out when removing the fuel pump nozzle, which could cause personal injury.
! Do not use diesel to refuel vehicles with a gasoline engine. Even small amounts of the wrong fuel result in damage to the fuel system and engine.
! Do not switch on the ignition if you
accidentally refuel with the wrong fuel. Otherwise, the fuel will enter the fuel lines. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely.
Gasoline Fuel grade ! You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter. If engine running problems are apparent, have the cause checked immediately and repaired. Excess unburned fuel can otherwise enter the catalytic converter, leading to overheating and possibly causing a fire.
! Use a filter when refueling from a fuel can. Otherwise, the fuel lines and/or injection system could be blocked by particles from the fuel can.
i Only refuel with premium-grade unleaded gasoline with a specified minimum octane number of 91 (average value of 96 RON/ 86 MON). You will usually find information about the fuel grade on the pump. If you cannot find the label on the pump, ask the staff for assistance. You can find more information under "Fuel" (Y page 342), or by contacting an authorized Mercedes-Benz Service Center or visiting http://www.mbusa.com (USA only).
Refueling Fuel filler flap The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESS- GO. The position of the fuel filler cap is displayed in the instrument cluster 8. The arrow next to the filling pump indicates the side of the vehicle.
Example: Coupe : To open the fuel filler flap ; To insert the fuel filler cap = Tire pressure table ? Fuel type
Refueling 157
Opening X Switch off the engine. X Remove the SmartKey from the ignition
lock. KEYLESS-GO: open the driver’s door. This switches the ignition to position 0, which corresponds to having removed the SmartKey. The driver’s door can be closed again.
X Press the fuel filler flap in the direction of
arrow :. The fuel filler flap opens slightly.
X Open the fuel filler flap. X Turn the fuel filler cap counter-clockwise
and remove it.
X Insert the fuel filler cap into the holder bracket on the inside of filler flap ;.
X Completely insert the pump nozzle into the
filler neck and refuel.
X Only fill the tank until the pump nozzle
switches off.
! Overfilling the fuel tank could damage the
fuel system.
Closing X Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages.
X Close the fuel filler flap. i If you drive with the fuel filler cap open, reserve fuel warning lamp 8 flashes. In addition, the ; Check Engine warning lamp may light up. A message appears in the multifunction display (Y page 228). For further information on warning and indicator lamps in the instrument cluster, see (Y page 245).
i Close the fuel filler flap before locking the vehicle. A locking pin otherwise prevents the fuel filler flap from closing after the vehicle has been locked.
158 Parking
Problems with fuel and the fuel tank Problem Fuel is leaking from the vehicle.
Possible causes/consequences and M Solutions G Risk of explosion or fire The fuel line or the fuel tank is defective. X Turn the SmartKey to position 0(Y page 145) in the ignition lock
