2005 MERCEDES-BENZ C COUPE Owner's Manual

384 Practical hintsReplacing bulbsSafe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies 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.
Bulbs
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.iSubstitute bulbs will be brought into
use when lamps malfunction. Observe
the messages in the multifunction dis-
play (
page 366).

385 Practical hints
Replacing bulbs
Front lamps Rear lamps
Lamp
Type
1
Additional turn signal
lamps
LED
2
Halogen headlamp: Turn
signal lamp
Bi-Xenon* headlamp:
Turn signal lamp
1156 A
2357 A
3
Halogen headlamps:
Low beam
1
Bi-Xenon* headlamp:
Low and high beam
1Vehicles with Bi-Xenon* headlamps: Low beam
and high beam use the same D2S-35W lamp. Do
not replace the Xenon bulbs yourself. See an
authorized Mercedes-Benz Center.
H7 (55 W)
D2S-35 W
Lamp
Type
4
Halogen headlamps:
High beam/high beam
flasher
Bi-Xenon* headlamps:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and standing
lamps
W5W
5
Fog lamp
Front fog lamp with
cornering fog lamp
HB4 (51 W)
H7 (55 W)
6
Side marker lamp
W5W
Lamp
Type
7
High mounted brake
lamp
LED
8
License plate lamps
C 5 W
9
Brake lamp
P 21 W
Turn signal lamp
PY21W
Tail, parking, standing
and side marker lamp
P21/5W
Rear fog lamp (only
driver’s side)
P21/4W

386 Practical hintsReplacing bulbs
Notes on bulb replacement

Use only 12-volt bulbs of the same type
and with the specified watt rating.


Switch lights off before replacing 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 by an authorized
Mercedes-Benz Center.


Additional turn signals in the exterior
rear view mirrors


High mounted brake lamp


Xenon* lamps


Front fog lamps
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 110).

Open the hood (
page 291) (except
for side marker lamps).
Halogen headlamps
Left headlamp, mirror-image of right
headlamp1Housing cover for low beam headlamp
2Housing cover for high beam head-
lamp, parking and standing lamp
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.

387 Practical hints
Replacing bulbs
3Bulb 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 bulbLow 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 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.

388 Practical hintsReplacing bulbsFront 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 bulb socket6.

Press the new bulb into bulb socket6.

Press bulb socket6 back into the
lamp.

Align housing cover2 and turn it
clockwise.Bi-Xenon* headlamps
Warning!
G
Do not remove the cover
1
for the
Bi-Xenon headlamp. Because of high voltage
in Bi-Xenon lamps, it is dangerous to replace
the bulb or repair the lamp and its compo-
nents. We recommend that you have such
work done by a qualified technician.

389 Practical hints
Replacing bulbs
Left headlamp, mirror-image of right
headlamp1Housing cover for Bi-Xenon headlamp
2Housing cover for high beam flasher,
parking and standing lamp3Bulb socket for turn signal lamp
4Bulb holder for high beam flasher
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.

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 socket3 with the bulb
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.

390 Practical hintsReplacing bulbsParking and standing lamp bulb
Turn housing cover2 counterclock-
wise and remove it.

Pull out bulb socket5 with the bulb.

Pull the bulb out of bulb socket5.

Press the new bulb into bulb socket5.

Press bulb socket5 back into the
lamp.

Align housing cover2 and turn it
clockwise.Side marker lamp bulb

Carefully slide the lamp towards the
rear in direction of arrows.

Remove the front end first.

Turn the bulb socket with the bulb
counterclockwise and remove it.

Pull the bulb out of the bulb socket.

Insert the new bulb into the bulb sock-
et.

Place the bulb socket back into the
lamp and turn it clockwise.

To reinstall the lamp, set the rear end in
the bumper and let the front end en-
gage.
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 110).
Tail lamp unit
1Trim panel
2Latch

Open the trunk lid.

Turn latches1 on respective trim
panel2 clockwise.

Fold trim panel2 to the side.

391 Practical hints
Replacing bulbs
3Tab
4Bulb socket for side marker lamp bulb
Press tabs3 together.

Remove the bulb carrier.

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 en-
gages.5Brake lamp bulb
6Backup lamp bulb
7Turn signal lamp bulb
8Rear fog lamp bulb (only driver’s side),
tail, parking and standing lamp

Reinstall the bulb carrier.
Let tabs3 engage.

Reinstall trim panel2.

Turn latches1 counterclockwise.Side marker lamp
The bulb socket for the side marker lamp
bulb is located between the bulb carrier
and the vehicle’s body.

Open the trunk lid.

Turn latches1 on respective trim
panel2 clockwise.

Fold trim panel2 to the side.

Pull bulb socket4 with the bulb out of
its holder.

Pull the bulb out of bulb socket4.

Press the new bulb into bulb socket4.

Press bulb socket4 back into its
holder.

Reinstall trim panel2.

Turn latches1 counterclockwise.