Page 340 of 481

339 Operation
Vehicle care
Light alloy wheels
If possible, clean wheels once a week.
Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light al-
loy wheels.Plastic and rubber parts
Use a gentle dishwashing detergent or
mild detergent for delicate fabrics as a
washing solution.
Wipe with a cloth moistened in a luke-
warm solution.
The surface may temporarily change
color. If this is the case, wait for it to
dry.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners con-
taining solvents. Do not touch the inside of the
front, rear or side windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an ex-
tended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased corro-
sion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
Warning!G
Do not use cleaners or cockpit care sprays
containing solvents to clean the cockpit or
the steering wheel. Cleaners containing sol-
vents will make the surface porous and vehi-
cle occupants could suffer serious injuries
from plastic parts coming loose in the event
of air bag deployment.
Page 344 of 481
343 Practical hints
What to do if …
Where will I find...?
Unlocking/locking in an emergency
Resetting activated head restraints
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Battery
Jump starting
Towing the vehicle
Fuses
Page 369 of 481

368 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
PGear Selector Lever
In P PositionYou have tried to start the engine
with the KEYLESS-GO* start/stop
button with the gear selector lever
not in positionP.Place the gear selector lever in positionP.
You have tried to turn off the engine
with the KEYLESS-GO* start/stop
button with the gear selector lever
not in positionP.
P/NPlease Shift To
N or PYou have tried 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
orN. Make sure the brake pedal is depressed.
PRE-SAFEInoperative
See Operator’s ManualPRE-SAFE® itself has failed. All other
occupant safety systems, such as
the air bags, are still available.Contact an authorized Mercedes-Benz Center
as soon as possible.
If ESP® and PRE-SAFE® malfunction
messages are displayed simulta-
neously, PRE-SAFE
® has been deac-
tivated as a result of these
malfunctions. All other occupant
safety systems, such as the air bags,
are still available.
Page 375 of 481

374 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
(USA only)
;
(Canada only)
!
Release
Parking BrakeYou are driving with the parking brake
set.Release the parking brake
(
page 53).
(USA only)
;
(Canada only)
3
EBV, ABS, ESP
Inoperative
See Operator’s Man.ABS, ESP®, EBP as well as PRE-SAFE®
have switched off due to a malfunction.
BAS is also switched off.
The brake system is still functioning nor-
mally but without the ABS, BAS, ESP
® and
PRE-SAFE® available.
Continue driving with added caution.
Adjust driving to be consistent with
reduced braking responsiveness.
Contact an authorized
Mercedes-Benz Center as soon as
possible.
(USA only)
;
(Canada only)
3
Check
Brake Fluid
LevelThere is insufficient brake fluid in the
reservoir.Risk of accident! Stop the vehicle in a
safe location and notify an authorized
Mercedes-Benz Center. Do not add
brake fluid! This will not solve the
problem.
Warning!G
Driving with the messages Check Brake
Fluid Level
displayed can result in an ac-
cident. Have your brake system checked im-
mediately.
Do not add brake fluid before checking the
brake system. Overfilling the brake fluid res-
ervoir can result in spilling brake fluid on hot
engine parts and the brake fluid catching
fire. You can be seriously burned.!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.
Page 381 of 481

380 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
A Reserve FuelThe fuel level has dropped below the re-
serve mark.Refuel at the next gas station
(
page 283).
Gas Cap
Is OpenA loss of pressure has been detected in
the fuel system. The fuel cap may not be
closed properly or the fuel system may be
leaky.Check the fuel cap (page 283).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Center.
»Replace
Air FilterThe air cleaner is clogged.Have the air cleaner checked by an au-
thorized Mercedes-Benz Center.
FRemove KeyYou have forgotten to remove the
SmartKey.Remove the SmartKey from the starter
switch.
Please
get a new key.The SmartKey is malfunctioning.Contact an authorized Mercedes-Benz
Center.
Key Detected
In VehicleA SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.Take the SmartKey with KEYLESS-GO*
out of the vehicle.
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381 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
FPlease don’t
forget your key.This display appears (for a maximum of
60 seconds) if the driver’s door is opened
with the engine turned off and no
SmartKey in the starter switch.
This message is only a reminder.Take the SmartKey or SmartKey with
KEYLESS-GO* with you when leaving
the vehicle.
Change
Key BatteriesThe SmartKey with KEYLESS-GO* batter-
ies are discharged.Replace the batteries (page 402).
Key
Not DetectedThe SmartKey with KEYLESS-GO* is not
recognized while the engine is running
because
the SmartKey with KEYLESS-GO* 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 cen-
trally locked nor can the engine be
started again after the engine is
stopped.
Key
Not DetectedThe 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.
Page 387 of 481

386 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Rear Left FoglampThe left rear fog lamp is malfunctioning. Contact an authorized
Mercedes-Benz Center as soon as
possible.
Rear Right FoglampThe right rear fog lamp is malfunctioning. Contact an authorized
Mercedes-Benz Center as soon as
possible.
Switch Off LightsYou have removed the SmartKey from the
starter switch, opened the driver’s door and
left the headlamps on or removed the
SmartKey with KEYLESS-GO* from the vehi-
cle and left the headlamps on.Switch off the headlamps.
Switch Off Lights
Or
Remove KeyThe exterior lamp switch is set toU and
you have forgotten to take out the SmartKey.
The parking lamps remain switched on.Switch off the headlamps
(
page 126).
or
Remove the SmartKey from the start-
er switch.
Tail Lamp
Left
Auxiliary Bulb OnThe left tail lamp is malfunctioning. An auxilia-
ry bulb is being used.Contact an authorized
Mercedes-Benz Center as soon as
possible.
Tail Lamp
Right
Auxiliary Bulb OnThe right tail lamp is malfunctioning. An auxil-
iary bulb is being used.Contact an authorized
Mercedes-Benz Center as soon as
possible.
Page 399 of 481
398 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, unlock the
driver’s door and the trunk using the me-
chanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the driv-
er’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 until the locking
knob moves up.
The driver’s door is unlocked.
Pull the door handle to open the driv-
er’s door.
iUnlocking your vehicle with the mechanical
key and opening the driver’s door or the trunk
will trigger the anti-theft alarm system.
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key