Defrosting the windows
Windows fogged up on the inside X
Activate the cooling with air
dehumidification function.
X Activate automatic mode.
X If the windows continue to fog up, activate
the defrosting function.
Windows fogged up on the outside X
Activate the windshield wipers.
X Press the _button repeatedly until the
O orP 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 rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
X Select SmartKey position 2with the Start/
Stop button.
X Press the ¤button.
The indicator lamp in the ¤button lights
up or goes out. Problems with the rear window
defroster The rear window defroster has deactivated
prematurely or cannot be activated. The on-
board voltage is too low because too many
electrical consumers are switched on.
X
Switch off any consumers that are not
required, e.g. seat heating 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. 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 Select key position 2with the Start/Stop
button.
X To activate: press thegbutton.
The indicator lamp in the gbutton lights
up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. When air-recirculation mode
is activated automatically, the indicator
lamp in the gbutton is not lit.
Outside air is added after about 30
minutes. Operating the climate cont
rol systems
107Climate control Z
ProCarManuals.com
Problems with the engine
Problem Possible causes/consequences and
M
MSolutions The engine does not
start. The starter motor
can be heard. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
X Turn the SmartKey back to position 0in the ignition lock before
attempting to start the engine again. Alternatively, 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 114). 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 engine does not
start. You cannot hear
the starter motor. The on-board voltage is too low because the battery is too weak
or discharged.
X
Jump-start the vehicle (Y page 240).
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. The engine is not
running smoothly and
is misfiring. 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.
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. 116
DrivingDriving and parking
ProCarManuals.com
Problems with fuel and the fuel tank
Problem Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle.
G
Risk of explosion or fire
The fuel line or the fuel tank is defective.
X Set the Start/Stop button to key position 0immediately.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle (Y page 67).
or
X Unlock the vehicle using the mechanical key (Y page 69).The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult a qualified specialist workshop. Parking
Important safety notes
G
WARNING
If flammable materials such as leaves, grass
or twigs are exposed to prolonged contact to
parts of the exhaust system that heat up, they
could ignite. There is a risk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine. They could also operate the vehicle's
equipment. There is a risk of an accident and
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! If the engine speed is too high or if the
vehicle is rolling, do not shift the
transmission directly from Dto R, from R
to Dor directly to P.
Do not open the driver's door while the
vehicle is in motion. At low speeds in
transmission position Dor R, park position
P is otherwise engaged automatically.
The transmission could be damaged.
! Always secure the vehicle correctly
against rolling away. Otherwise, the vehicle
or its drivetrain could be damaged. Parking
127Driving and parking Z
ProCarManuals.com
Display messages Possible causes/consequences and
M
MSolutions The soft top has been opened and closed several times in a row.
The soft-top drive has been switched off automatically for safety
reasons.
You can open and close the soft top again after approximately ten
minutes.
X
Switch off the ignition and turn it back on.
X Repeat the opening or closing procedure (Y page 77).K
Depress Brake Depress Brake You have attempted to close the soft top with the soft top switch
while the vehicle was stationary.
X
Depress the brake pedal.
X Press the soft-top switch until the soft top is completely closed. ¥
Check Washer Fluid Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped
below the minimum.
X
Add washer fluid ( Ypage 217). SmartKey
Display messages Possible causes/consequences and
M MSolutions +
Replace Replace
Key
KeyBattery
Battery The SmartKey batteries are discharged.
X
Change the batteries ( Ypage 64). +
Key Not Detected Key Not Detected
(red display message) The SmartKey is not in the vehicle. A warning tone also sounds.
When you switch off the engine, you will be unable to restart it.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Locate the SmartKey. The SmartKey is not detected while driving because a powerful
radio transmitter is causing interference. A warning tone also
sounds.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Insert the SmartKey into the ignition lock and turn it to the
desired position ( Ypage 113). Displays and operation
181On-board computer and displays Z
ProCarManuals.com
Example: Coupe
X
Select key position 2with the Start/Stop
button.
X To open: briefly press the middle of
cover :.
The stowage compartment opens.
X Press in cigarette lighter ;.
Cigarette lighter ;will pop out
automatically when the heating element is
red-hot.
X To close: fold down cover :. 12 V sockets
Points to observe before use X
Turn the SmartKey to position 1in the
ignition lock (Y page 113).
The sockets can be used for accessories with
a maximum current draw of 180 W (15 A), e.g.
lamps or chargers for mobile phones.
If you use the sockets for long periods when
the engine is switched off, the battery may
discharge.
i You can also use the sockets when the
ignition is switched off. An emergency cut-
out ensures that the on-board voltage does
not drop too low. If the on-board voltage is
too low, the power to the sockets is
automatically cut. This ensures that there
is sufficient power to start the engine. Socket in the glove box
X
Open the glove box (Y page 196).
Lift up the cover of socket :.
Socket on the center console !
If accessories are connected, make sure
that a maximum current draw of 15 A is not
exceeded. Otherwise, you will overload the
fuse. Example: Coupe
X
To open: briefly press the middle of
cover :.
The stowage compartment opens.
X Lift up the cover of socket ;.
X To close: fold down cover :.200
FeaturesSto
wage an d features
ProCarManuals.com
same programming steps with this remote
control. Before performing these steps,
make sure that new batteries have been
installed in garage door drive remote
control
A.
R Note that some remote controls only
transmit for a limited amount of time (the
indicator lamp on the remote control goes
out). Press button Bon remote control
A again before transmission ends.
R Align the antenna cable of the garage door
opener unit. This can improve signal
reception/transmission.
Opening/closing the garage door Once programmed, the integrated garage
door opener Awill assume the function of
the garage door system's remote control.
Please also read the operating instructions
for the garage door system.
X Select key position 2with the Start/Stop
button.
X Press button ;,=or? which you have
programmed to operate the garage door.
Garage door system with a fixed code:
indicator lamp :lights up green.
Garage door system with a rolling code:
indicator lamp :flashes green.
i The transmitter will transmit a signal as
long as the button is pressed. The
transmission is halted after a maximum of
ten seconds and indicator lamp :lights
up yellow. Press button ;,=or? again
if necessary.
Clearing the memory of the integrated
garage door opener on the rear-view
mirror X
Select key position 2with the Start/Stop
button.
X Press buttons ;and ?.
The indicator lamp lights up yellow.
X Press and hold buttons ;and ?until the
indicator lamp turns green. i
Make sure that you clear the memory of
the integrated garage door opener before
selling the vehicle. Charge maintenance socket
The battery may drain if the vehicle is left
stationary for long periods. In this case,
Mercedes-Benz recommends attaching the
trickle charger to the charge maintenance
socket.
The charge maintenance socket is designed
solely for connecting a trickle charger. A
trickle charger can be obtained from an
authorized Mercedes-Benz Center, for
example. X
Switch the ignition off.
X Open the trunk lid.
X Connect the cable provided in the trunk to
the trickle charger.
X Connect the trickle charger to charge
maintenance socket :. Consult the
manufacturer's operating instructions on
how to do so.
i A trickle charger connected to charge
maintenance socket :only maintains the
current charge level of the vehicle's
electrical system battery. If the vehicle's
electrical system battery is discharged, it
needs to be charged with a battery charger.
You will find further information on
charging the battery on (Y page 236). Features
211Stowage and features Z
ProCarManuals.com
X
Do not remove any foreign objects which
have penetrated the tire, e.g. screws or
nails.
X Take the TIREFIT kit out of the trunk
(Y page 228). X
Open the TIREFIT kit and remove "max.
80 km/h" sticker D.
X Affix sticker Dwithin the driver's field of
vision.
i If TIREFIT leaks out, allow it to dry. It can
then be removed like a layer of film.
If you get TIREFIT on your clothing, have it
cleaned as soon as possible with
perchloroethylene.
Comply with the manufacturer's safety
instructions on the tire inflation compressor
label and on the tire sealant bottle.
i You will also find operating instructions
= in the lid of the TIREFIT kit.
X Pull the cable and filler hose Eout of the
housing. X
Unscrew flanged cap A. X
Unscrew the cap from tire sealant
bottle :. Make sure that the aluminum
film is not damaged when doing so. X
Screw tire sealant bottle :clockwise
tightly onto flange seal F.
This pierces the aluminum film.
X Remove the cap from the valve on the faulty
tire.
X Make sure that pressure release screw C
is closed.
X Remove the dust protection cap from filler
hose E. X
Screw the end of filler hose Eonto tire
valve G.
X Make sure that on/off switch ;on the tire
inflation compressor is set to 0.
X Insert connector ?into the 12 V cigarette
lighter socket ( Ypage 199).
X Select key position 2with the Start/Stop
button ( Ypage 113).
i The battery discharges during tire
inflation compressor usage. For this 230
Flat tireBreakdown assistance
ProCarManuals.com
The highly flammable gas mixture forms when
charging the battery as well as when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
R by wearing clothing made from synthetic
fibers
R due to friction between clothing and seats
R if you push or pull the battery across the
carpet or other synthetic materials
R if you wipe the battery with a cloth. G
WARNING
During the charging process, a battery
produces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
R Never place metal objects or tools on a
battery.
R It is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and
disconnecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running. G
WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with the skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash battery acid immediately with
water and seek medical attention. H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified
specialist workshop or a
special collection point for
used batteries.
! Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the
Maintenance Booklet or contact a qualified
specialist workshop for more information.
! You should have all work involving the
battery carried out at a qualified specialist
workshop. In the exceptional case that it is
necessary for you to disconnect the battery
yourself, make sure that:
R you switch off the engine and remove the
SmartKey. On vehicles with KEYLESS-
GO, ensure that the ignition is switched
off. Check that all the indicator lamps in
the instrument cluster are off. Otherwise,
electronic components, such as the
alternator, may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic
system may be damaged.
R the transmission is locked in position P
after disconnecting the battery. The
vehicle is secured against rolling away.
You can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be installed securely
during operation. Battery
237Breakdown assistance Z
ProCarManuals.com