Page 351 of 506

350 OperationVehicle careWindow cleaning
Fold wiper arm forward until it snapes
into place.
Use a window cleaning solution on all
glass surfaces.
An automotive glass cleaner is
recommended.Light alloy wheels
Mercedes-Benz approved Wheel Care
should be used for regular cleaning of the
light alloy wheels.
If possible, clean wheels once a week with
Mercedes-Benz approved Wheel Care, us-
ing a soft bristle brush and a strong spray
of water.
Follow instructions on container.Warning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: make sure the
vehicle's on-board electronics have status 0) before cleaning the windshield. Other-
wise, the wiper motor could suddenly turn
on and cause injury.
!Fold the windshield wiper arms back
onto the windshield before turning the
SmartKey in the starter switch.
Hold onto the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
iOnly use acid-free cleaning materials.
Acid may cause corrosion or damage
the clear coat.
Page 354 of 506
353 Practical hints
What to do if …?
Where will I find...?
Unlocking/locking in an emergency
Opening/closing in an emergency
Replacing batteries in the SmartKey/ SmartKey with KEYLESS-GO*
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses
Page 374 of 506
373 Practical hints
What to do if …?
Display
Display message
Possible cause
Possible solution
P
Selector lever
in park position
You have turned off the engine with the
KEYLESS-GO* start/stop button in gear
selector lever positionN and opened the
driver’s door.
or
You have attempted to switch off the en-
gine with the KEYLESS-GO* start/stop
button while the gear selector lever was in
positionR orD.
Place the gear selector lever in
positionP.
Please
shift to
P or N
You have attempted to start the engine
with the KEYLESS-GO* start/stop button
while the gear selector lever was in
positionR orD.
Place the gear selector lever in
positionP or N.
Page 383 of 506

382 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
A
Reserve fuel
The fuel level has dropped below the re-
serve mark.
Refuel at the next gas station
(page 302).
Y
Hood open!
You are driving with the hood open.
Close the hood (
page 306).
I
Remove key
You have forgotten to remove the
SmartKey.
Remove the SmartKey from the start-
er switch.
Replace key
No additional code available for SmartKey
or SmartKey with KEYLESS-GO*.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Key
Check battery!
The SmartKey with KEYLESS-GO* batter-
ies are discharged.
Change the batteries (
page 412).
Key
not recognized!
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running be-
cause
the SmartKey is not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe to
do so.
Search for the SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started
again after the engine has been stopped.
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.
Change the position of the SmartKey
in the vehicle.
Operate the vehicle with the SmartKey
in the starter switch if necessary.
Keyless Go
Check system
The KEYLESS-GO* system is malfunction-
ing.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 384 of 506

383 Practical hints
What to do if …?
Display symbol
Display message
Possible cause
Possible solution
I
Key recognized
in vehicle!
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.
Take the SmartKey out of the vehicle.
Key
do not forget key
This display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine shut off and no SmartKey
in the starter switch.
Message is only a reminder.
Insert SmartKey in the starter switch.
Take the SmartKey with
KEYLESS-GO* with you when leaving
the vehicle.
.
3rd brake lamp
The high mounted brake lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp
Drive to workshop
Stop lamp illumination is delayed or lamp
is permanently on.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, left
The left brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake lamp, right
The right brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Display malfunction
Visit workshop
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front foglamp, left
The left front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Front foglamp, right
The right front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Page 387 of 506

386 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
.
Tail lamp right
back-up lamp on
The right tail lamp is malfunctioning. A
back-up bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Turn off lamps!
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.
Turn off the headlamps.
Turn signal,
front left
The left front turn signal lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Turn signal,
front right
T h e r i g h t f r o n t t u r n s i g n a l l a m p i s m a l f u n c-
tioning.
Replace the bulb as soon as possible.
Turn signal,
left mirror
The left turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
Turn signal,
right mirror
The right turn signal in the side mirror is
malfunctioning. This message will only ap-
pear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
Turn signal rear left
back-up lamp on
The left rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
Turn signal rear right
back-up lamp on
The right rear turn signal lamp is malfunc-
tioning. A back-up bulb is being used.
Replace the bulb as soon as possible.
Page 398 of 506
397 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey or KEYLESS-GO*, open the
driver’s door and the trunk using the
mechanical key.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key counterclock-
wise to position1.
The driver’s door is unlocked.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Vehicles with KEYLESS-GO*:
Pull the outside door handle.
Press the KEYLESS-GO* start/stop
button (
page 35).
Page 399 of 506

398 Practical hintsUnlocking/locking in an emergencyUnlocking the trunk
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The trunk lid lock is located next to the
handle above the rear license plate recess.
1Unlocking in an emergency
2Handle
Insert the mechanical key into the
trunk lid lock until it stops.
Turn the mechanical key
counterclockwise to position1 and
hold it in this position.
Pull the trunk lid handle2 and lift the
trunk lid.
The trunk opens.
Turn the mechanical key back and
remove it from the trunk lid lock.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, do the following:
Close the passenger door and the
trunk lid.
Press the central locking switch in the
center console (
page 110).
Check to see whether the locking knob
on the passenger door have moved
down.
If necessary push it down manually.
Except for the driver’s door, the vehicle
should now be locked.
! Always make sure there is sufficient
overhead clearance.