Page 274 of 376
274 Practical hintsWhat to do if …Left display
Right display
Possible cause
Possible solution
Ï
Coolant
Visit workshop!
The cooling fan for the coolant is
malfunctioning.
Observe the coolant temperature gauge.
Have the fan replaced as soon as possible.
.
Low beam,
left
The left low beam lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Low beam,
right
The right low beam lamp is malfunc-
tioning.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Display defective
Visit workshop!
The display for the lights is malfunc-
tioning.
Visit an authorized Mercedes-Benz Center
as soon as possible.
Turn signal R, L
Substitute
lamp on!
The left rear turn signal lamp is mal-
functioning. A backup bulb has been
brought into use.
Replace the bulb as soon as possible.
Turn signal R, R
Substitute
lamp on!
The right rear turn signal lamp is
malfunctioning. A backup bulb has
been brought into use.
Replace the bulb as soon as possible.
Page 297 of 376

297 Practical hints
Replacing bulbs
Notes on bulb replacement
Only use 12 volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:
the additional turn signals in the exteri-
or rear view mirrors
the high mounted brake lamp
the brake lamps
the parking lamps and the side marker
lamps in the tail lamp assemblies
the rear fog lamps
the low beam (Xenon or Bi-Xenon*)
lamps
the front fog lamps
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas. A
bulb can explode if you:
touch or move it when hot,
drop the bulb,
scratch the bulb.
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
Page 298 of 376

298 Practical hintsReplacing bulbsReplacing bulbs for front lamps
1Bulb socket for turn signal lamp
2Low beam lamp cover (Xenon or
Bi-Xenon* lamp). Do not remove.
3High beam lamp coverReplacing front turn signal bulb
Switch off the lights.
Open the hood (
page 227).
Twist bulb socket 1 counterclockwise
and pull out.
Push bulb into socket, turn counter-
clockwise and remove.
Insert new bulb in socket, push and
twist clockwise.
Reinsert bulb socket in lamp and twist
clockwise.Replacing high beam bulbs
1High beam bulbs
2Locking mechanism
3Parking and standing lamps
Switch off the lights.
Open the hood (
page 227).
Press ends of headlamp cover tab to-
gether and remove cover.
Pull electrical connector off.
Turn the locking mechanism 2 counter-
clockwise and take out the bulb.
Insert the new bulb so that the base lo-
cates in the recess on the holder.
Warning!
G
Do not remove the cover for the Xenon or
Bi-Xenon*headlamp. Because of high volt-
age in Xenon and Bi-Xenon* lamps, it is dan-
gerous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.
Page 299 of 376

299 Practical hints
Replacing bulbs
Turn the locking mechanism 2 clock-
wise.
Plug the connector onto the bulb.
Align headlamp cover and click into
place.
Replacing parking and standing lamp
bulbs
Switch off the lights.
Open the hood (
page 227).
Press ends of headlamp cover tab to-
gether and remove cover.
Pull out the bulb socket with the bulb.
Pull the bulb out of the bulb socket.
Insert a new bulb in the socket.
Reinstall the bulb socket.
Align headlamp cover and click into
place.Replacing side marker lamp
Switch off the lights.
Carefully slide lamp towards rear.
Remove front end first.
Twist bulb socket counterclockwise
and pull out.
Pull bulb out of the bulb socket.
Insert new bulb in socket.
Reinstall bulb socket, push in, and twist
clockwise.
To reinstall lamp, set rear end in
bumper and let front end snap into
place.
Replacing bulbs for rear lamps
Tail lamp assemblies
1Backup lamp
2Turn signal lamp
3Driver’s side: Rear fog lamp
Passenger’s side: Substitute lamp
Switch off the lights.
Open the trunk lid (
page 83).
Fold trim to side and remove.
Twist bulb socket counterclockwise
and pull out.
iHave the headlamp adjustment
checked regularly.
Page 300 of 376
300 Practical hintsReplacing bulbs
Gently push bulb into socket, turn
counterclockwise and remove.
Insert new bulb and reinstall bulb sock-
et.
The bulb socket should audibly click
into place.
Reinstall trim.License plate lamp
1Screws
Switch off the lights.
Loosen both screws and remove lamp.
Replace the bulb and reinstall lamp.
Retighten the screws.
Page 324 of 376

324 Practical hintsJump startingThe starter battery is located in the engine
compartment.
Make sure that the two vehicles do not
touch.
Turn off the engine.
Turn off all electrical consumers.
Apply parking brake.
Shift selector lever to positionP.1Negative terminal of charged battery
2Negative terminal of discharged
battery
3Positive terminal of discharged battery
4Positive terminal of charged battery
Remove the red cover from positive ter-
minal on both vehicles (
page 319).
Connect the positive terminals 3 and 4
of the batteries with the jumper cables.
Start with the charged battery.
Start the engine of the vehicle with the
charged battery and run at idle speed.
Connect the negative terminals 1 and 2
of the batteries with the jumper cables.
Start with the charged battery.
Start the engine of the disabled vehi-
cle.
Now you can again turn on the electri-
cal consumers. Do not turn on the
lights under any circumstances.
Remove the jumper cables first from
the negative terminals 1 and 2 of the
batteries and then from the positive
terminals 3 and 4.
Have the battery checked at the near-
est Mercedes-Benz Center.
Warning!
G
Never lean over the battery while connect-
ing or jump starting.Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 232).
iThe vehicle cannot be started via
tow-start.
Page 351 of 376

351 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
ABC
(A
ctive B
ody C
ontrol)
Active, computer-controlled system
that hydraulically adjusts the suspen-
sion at all four wheels in response to
various driving situations.
Alignment bolt
Metal pin with thread. The alignment
bolt, or centering bolt, is an aid used
when changing a tire to align the wheel
with the wheel hub.BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp
7
on the glove box lights up).
See your authorized Mercedes-Benz
Center for availability.
BabySmartTM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping depending on vehi-
cle settings and/or ambient condi-
tions.