Page 390 of 481

389 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
. Rear foglamp
Substitute bulb on
The foglamp is malfunctioning. A back-up
bulb is being used.Replace the bulb as soon as possible
(
page 411).
Reverse lamp
left sideThe left backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 411).
Reverse lamp
right sideThe right backup lamp is malfunctioning.Replace the bulb as soon as possible
(
page 411).
Side marker lamp
front leftThe front left side marker lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Side marker lamp
front rightThe front right side marker lamp is mal-
functioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Tail lamp
left
Substitute bulb on
The left tail lamp is malfunctioning. A
back-up bulb is being used.Replace the bulb as soon as possible
(
page 411).
Tail lamp
right
Substitute bulb on
The right tail lamp is malfunctioning. A
back-up bulb is being used.Replace the bulb as soon as possible
(
page 411).
Turn off lampsYou 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 ve-
hicle and left the headlamps on.Switch off the headlamps.
Page 394 of 481

393 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
KClose
tilt/sliding sunroofYou have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding portion of the
tilt/sliding sunroof open.Close the tilt/sliding sunroof
(
page 250).
JClose
tilt/sliding sunroofYou have opened the driver’s door with
the SmartKey removed from the starter
switch and the tilting portion of the
tilt/sliding sunroof open.Close the tilt/sliding sunroof
(
page 250).
L Tele Aid malfunction
Drive to workshopOne or more main functions of the Tele
Aid system are malfunctioning.Have the Tele Aid system checked by
an authorized Mercedes-Benz Center.
tFunction
UnavailableThis display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
W To up
Washer fluidThe fluid level has dropped to about 1/3 of
total reservoir capacity.Add washer fluid (page 312).
Page 400 of 481

399 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 the 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 until the locking
knob moves up.
The driver’s door is unlocked.
Pull the door handle to open the
driver’s door.
iUnlocking and opening the driver’s door
and/or the trunk with the mechanical key will
trigger the anti-theft alarm system.
To cancel the alarm, do one of the following:
Press button Œ or ‹on the Smart-
Key.
Insert the SmartKey in the starter switch.
Vehicles with KEYLESS-GO*
Pull the outside door handle.
Press the KEYLESS-GO* start/stop button
(
page 37).
Page 403 of 481
402 Practical hints
Opening/closing in an emergency
Power tilt/sliding sunroof*
You can open or close the tilt/sliding
sunroof manually should an electrical
malfunction occur.
The tilt/sliding sunroof drive is located
behind the lens 1 of the interior overhead
light.
1Lens
Remove SmartKey from the starter
switch.
Pry off lens1 using a flat blade
screwdriver.2Locking tabs
Slide both locking tabs2 in the direc-
tion of arrows.
Lower the rear of the cover.
Remove the cover.
Take the crank 3 out of the Operator’s
Manual pouch.
Insert crank3 through hole on the left
side.3Crank
Turn crank3 clockwise to:
slide sunroof closed
raise sunroof at the rear
Turn crank3 counterclockwise to:
slide sunroof open
lower sunroof at the reariDo not disconnect electrical connectors.
iTurn crank3 slowly and smoothly.
The tilt/sliding sunroof must be synchronized af-
ter being operated manually (
page 252).
Page 414 of 481

413 Practical hints
Replacing wiper blades
Replacing wiper blades
Removing and installing wiper blades
Remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: make
sure the vehicle's on board electronics
have status 0).
Removing wiper blades
1Unlocking
2Tab
Pull the tab2 in the direction of
arrow1.
The wiper blade is unlocked.
Lift up the wiper arm as far as you need
to remove the wiper blade.
Carefully fold the wiper arm back to
rest on the windshield.
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
status0) before replacing a wiper blade.
Otherwise, the wiper motor could suddenly
turn on and cause injury.
Warning!G
Wiper blades are components that are sub-
ject to wear and tear. Change the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!Never open the hood when the wiper arms
are folded forward.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.
!Do not pull on the wiper blade inserts. They
could tear.
!Hold on to the wiper arm. If released, the
force of the impact from the tensioning spring
could crack the windshield.
Page 416 of 481

415 Practical hints
Flat tire
Flat tire
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flasher
(
page 135).
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake (page 59).
Move the gear selector lever toP.
Vehicles with SmartKey:
Turn off the engine (page 60).
Remove the SmartKey from the starter
switch.Vehicles with SmartKey with
KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* start/stop button on the
gear selector lever once (
page 61).
Open the driver’s door (this puts the ig-
nition in position0 (
page 38), same
as with the SmartKey removed from
the starter switch). The driver’s door
then can be closed again.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Warning!G
The dimensions of the spare wheel is differ-
ent from those of the road wheels. As a re-
sult, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire pressure and do not ex-
ceed a vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® when a Minis-
pare wheel is mounted.
iOpen door only when conditions are safe to
do so.
Page 422 of 481

421 Practical hints
Battery
Battery
The battery is located in the engine
compartment on the right hand side.
1Clamps
Removing filter box:
Release clamps1.
Remove filter box.
Installing filter box:
Insert filter box properly.
Secure it with clamps1.
Warning!G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and
precautions when handling automotive
batteries (
page 311).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the battery checked regularly by an autho-
rized Mercedes-Benz Center.
Refer to Maintenance Booklet for maintenance
intervals or contact an authorized
Mercedes-Benz Center for further information.
Page 423 of 481

422 Practical hints
Battery
2Negative terminal
3Positive terminal cover
Disconnecting the batteryApply the parking brake (page 59).
Make sure gear selector lever is set to
positionP (
page 170).
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start / stop button until
the engine shuts off.
Open the driver’s door.
Open the hood (page 306).
Remove the filter box (page 421).
Read and observe safety instructions
and precautions (
page 421).
Disconnect the battery negative lead
from negative terminal2.
Remove cover3 from the positive ter-
minal.
Disconnect the battery positive lead.
Warning!G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.Warning!G
With a disconnected battery
you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect
the gear selector lever will remain
locked in positionP
!Always disconnect the battery in the order
described below. Otherwise the vehicle’s elec-
tronics can be damaged.