2008 MERCEDES-BENZ CLK350 bulb

415 Practical hints
What to do if …?
Display symbolDisplay messagePossible cause/consequencePossible solution
. Tail Lamp
Right
Auxiliary Bulb On

The right tail lamp is malfunctioning. A
backup bulb is being used.Replace the bulb as soon as possible
(
page 448).
Left Mirror
Turn SignalThe turn signal in the left exterior rear
view mirror is malfunctioning. This mes-
sage will only appear if a critical number
of LEDs have stopped working.Contact an authorized Mercedes-Benz
Center as soon as possible.
Right Mirror
Turn SignalThe turn signal in the right exterior rear
view mirror is malfunctioning. This mes-
sage will only appear if a critical number
of LEDs have stopped working.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn Signal
Rear Left
Auxiliary Bulb On

The left rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.Replace the bulb as soon as possible
(
page 448).
Turn Signal
Rear Right
Auxiliary Bulb On

The right rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.Replace the bulb as soon as possible
(
page 448).

443 Practical hints
Replacing bulbs
Replacing bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies are in good working order at all
times.Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Center for headlamp
adjustment.iIf the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with the
lights on should clear up the fogging.
iBackup bulbs will be brought into use when
lamps malfunction. Read and observe the
messages in the multifunction display
(
page 411).

444 Practical hints
Replacing bulbs
Bulbs Front lamps Rear lamps
LampType
1Additional turn signal
lampLED
2Turn signal lamp1156 NA
3Halogen headlamp:
Low beam
Bi-Xenon* headlamp:
Low and high beam
1
1V e h i c le s w i t h B i- X e n on h e a dl a m p s * d o no t r e p l ac e
the Bi-Xenon bulbs yourself.
H7 (55 W)
D2S-35 W
4Halogen headlamp:
High beam/high beam
flasher
Bi-Xenon* headlamp:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and standing
lampW 5 W
5Front fog lamp
Corner-illuminating
front fog lamp*H11 (55 W)
H11 (55 W)
6Side marker lampW 5 W
LampType
7High mounted brake
lampLED
8Brake lampP 21 W
9Turn signal lampPY 21 W
aTail, parking and stand-
ing lamp, side marker
lampP 21/5 W
bBackup lampP 21 W
cLicense plate lampsC 5 W
dRear fog lamp (driver’s
side only) and tail lampP 21/4 W

445 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
come on, visit an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the following
lamps replaced at an authorized
Mercedes-Benz Center.

Additional turn signal lamps in the exte-
rior rear view mirrors

High mounted brake lamp

Bi-Xenon* lamps

Front fog lamps

Front side marker lamps
Warning!G
Keep bulbs out of reach of children.
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
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.
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced at an au-
thorized Mercedes-Benz Center.

446 Practical hints
Replacing bulbs
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 129).
Open the hood (page 323).
Front lamps halogen-type
1Housing cover for low beam headlamp
2Housing cover for high beam head-
lamp, parking and standing lamp3Bulb socket for turn signal lamp bulb
4Bulb holder of low beam bulb
5Bulb holder of high beam bulb
6Bulb socket for parking and standing
lamp bulb
Low beam bulb
Turn housing cover1 counterclock-
wise and remove it.
Turn bulb holder4 with the bulb coun-
terclockwise and remove it.
Pull the bulb at its socket out of bulb
holder4.
Insert the new bulb so that its socket
locates in the recess of bulb holder4
and is level to it.
Reinsert bulb holder4 with the bulb in
the lamp and turn clockwise.
Align housing cover1 and turn it
clockwise.
High beam bulb
Turn housing cover2 counterclock-
wise and remove it.
Turn bulb holder5 with the bulb coun-
terclockwise and remove it.
Pull the bulb at its socket out of bulb
holder5.
Insert the new bulb so that its socket
locates in the recess of bulb holder5
and is level to it.
Reinsert bulb holder5 with the bulb in
the lamp and turn clockwise.
Align housing cover2 and turn it
clockwise.

447 Practical hints
Replacing bulbs
Front turn signal lamp bulb
Turn bulb socket3 counterclockwise
and remove it.
Press gently onto the bulb and turn
counterclockwise out of bulb
socket3.
Press the new bulb gently into bulb
socket3 and turn clockwise until it
engages.
Place bulb socket3 back into the
lamp and turn it clockwise.
Parking and standing lamp bulb
Turn housing cover2 counterclock-
wise and remove it.
Pull out bulb socket6 with the bulb.
Pull the bulb out of the bulb socket6.
Press the new bulb into bulb socket6.
Press bulb socket6 back into the
lamp.
Align housing cover2 and turn it
clockwise.Front lamps Bi-Xenon*-type
1Bulb socket for turn signal lamp
2Housing cover for high beam flasher,
parking and standing lamp
3Housing cover for Bi-Xenon* headlamp4Bulb holder for high beam flasher bulb
5Bulb socket for parking and standing
lamp bulb
High beam bulb for high beam flasher
Turn housing cover2 counterclock-
wise and remove it.
Turn bulb holder4 with the bulb coun-
terclockwise and remove it.
Pull the bulb at its socket out of bulb
holder4.
Insert the new bulb so that its socket
locates in the recess of bulb holder4
and is level to it.
Warning!G
Do not remove the cover 3 for the
Bi-Xenon* headlamp. 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.


448 Practical hints
Replacing bulbs
Reinsert bulb holder4 w i t h t h e b u l b i n
the lamp and turn clockwise.
Align housing cover2 and turn it
clockwise.
Front turn signal lamp bulb
Turn bulb socket1 counterclockwise
and remove it.
Press gently onto the bulb and turn
counterclockwise out of bulb
socket1.
Press the new bulb gently into bulb
socket1 and turn clockwise until it
engages.
Place bulb socket1 back into the
lamp and turn it clockwise.
Parking and standing lamp bulb
Turn housing cover2 counterclock-
wise and remove it.
Pull out bulb socket5 with the bulb.
Pull the bulb out of the bulb socket5.
Press the new bulb into bulb socket5.
Press bulb socket5 back into the
lamp.
Align housing cover2 and turn it
clockwise.
Additional turn signal lamps
The additional turn signal lamps in the ex-
terior rear view mirrors have LEDs.
If a malfunction occurs or LEDs fail to func-
tion, the entire turn signal unit must be re-
placed. Have the additional turn signal unit
replaced at an authorized Mercedes-Benz
Center.
Front side marker lamp
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
lamp bulbs replaced at an authorized
Mercedes-Benz Center.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 129).
Tail lamp unit
Open trunk lid.
Swing the trim panel covering the
corresponding rear lights to the side.
1Connector
2Tab
Disconnect electrical connector1.


449 Practical hints
Replacing bulbs
Pull tab2 in the direction of the
arrow.
Remove the bulb carrier.
1Brake lamp
2Backup lamp
3Rear fog lamp (driver’s side)/tail lamp
4Tail lamp, parking and standing lamp,
side marker lamp
5Turn signal lamp
Press gently onto the respective bulb
and turn counterclockwise out of its
bulb socket.
Press the new bulb gently into its bulb
socket and turn clockwise until it
engages.
Reinstall the bulb carrier.
Let tab2 (
page 448) engage.
Connect the electrical connector1
(
page 448) until it engage.
Reinstall trim panel.License plate lamp
1Screws
2License plate lamp
Loosen both screws1.
Remove the license plate lamp2.
Replace the tubular lamp.
Reinstall the license plate lamp2.
Retighten the screws1.