2003 MERCEDES-BENZ C320 WAGON turn signal bulb

272 Practical hintsWhat to do if …Display
Possible cause
Suggested solution
.
LOW BEAM, L
CHECK LAMP!
The left low beam lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
LOW BEAM, R
CHECK LAMP!
The right low beam lamp is malfunction-
ing.

Visit an authorized Mercedes-Benz
Center as soon as possible.
DISPLAY DEFECTIVE
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
TURN SIGNAL, LR
CHECK LAMP!

The left rear turn signal lamp is malfunc-
tioning.

Replace the bulb as soon as possi-
ble.
TURN SIGNAL, RR
CHECK LAMP!

The right rear turn signal lamp is malfunc-
tioning.

Replace the bulb as soon as possi-
ble.
TURN SIG. IN MIRROR, L
CHECK LAMP!
The left turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.

Have the LEDs replaced as soon as
possible.
TURN SIG. IN MIRROR, R
CHECK LAMP!
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.

Have the LEDs replaced as soon as
possible.
S203 MY03_A.book Page 272 Tuesday, January 28, 2003 2:22 PM

273 Practical hints
What to do if …
Display
Possible cause
Suggested solution
.
TURN SIGNAL LF
CHECK LAMP!
The left front turn signal lamp is malfunc-
tioning.

Replace the bulb as soon as possi-
ble.
TURN SIGNAL RF
CHECK LAMP!
The right front turn signal lamp is mal-
functioning.

Replace the bulb as soon as possi-
ble.
BRAKE LAMP
VISIT WORKSHOP!
Brake lamp illumination is delayed or
lamp is permanently on.

Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LAMP, L
CHECK LAMP!

The left brake lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LAMP, R
CHECK LAMP!

The right brake lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
3RD BRAKE LAMP
CHECK LAMP!

The high mounted brake lamp is malfunc-
tioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
HIGH BEAM, L
CHECK LAMP!

The left high beam lamp is malfunction-
ing.

Replace the bulb as soon as possi-
ble.
HIGH BEAM, R
CHECK LAMP!

The right high beam lamp is malfunction-
ing.

Replace the bulb as soon as possi-
ble.
S203 MY03_A.book Page 273 Tuesday, January 28, 2003 2:22 PM

292 Practical hintsReplacing bulbs
Replacing 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 your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
Bulbs Front lamps
iBackup bulbs will be brought into use
when the following lamps malfunction:

Standing lamps


Tail lamps
Lamp
Type
1
Additional turn
signal
LED
2
Turn signal lamp
Halogen
Turn signal lamp
Bi-Xenon*
1156 A
2357 A
3
Low beam Halogen
Low and high beam*
H7 (55 W)
Bi-Xenon*
4
High beam
H7 (55 W)
Parking and
standing lamps
W5W
5
Fog lamp
HB4/9006
(55 W)
6
Side marker lamp
W5W
S203 MY03_A.book Page 292 Tuesday, January 28, 2003 2:22 PM

293 Practical hints
Replacing bulbs
Rear lamps Notes on bulb replacement


Use only 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 follow-
ing 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
Lamp
Type
7
High mounted brake
lamp
LED
8
Brake lamp
P21W
9
Turn signal lamp
PY 21 W
10
Backup lamp
P21W
11
Tail, parking, stand-
ing and side marker
lamp
P21/4W
12
License plate lamps
C5W
13
Rear fog lamp,
driver’s side
P21/4W
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.
S203 MY03_A.book Page 293 Tuesday, January 28, 2003 2:22 PM

294 Practical hintsReplacing bulbsReplacing bulbs for front lamps
Halogen headlamps
1Bulb socket for turn signal lamp
2Headlamp cover for high beam head-
lamp and for parking and standing
lamp
3Headlamp cover for low beam head-
lamp4Low beam bulb
5High beam bulb
6Bulb socket for parking and standing
lamp
Low and high beam bulb

Switch off the lights.

Open the hood (
page 234).

Press the clamp and remove headlamp
cover2 or 3.

Pull electrical connector off.

Unclip the retainer springs and take out
the bulb.

Insert the new bulb so that the base
locates in the recess on the holder.

Clip the retainer springs and plug the
connector onto the bulb.

Align headlamp cover2 or 3 and click
into place.
Front turn signal lamp bulb

Switch off the lights.

Open the hood (
page 234).

Twist bulb socket1 counterclockwise
and pull out.

Push bulb into socket, turn counter-
clockwise and remove.

Insert new bulb in socket, push in and
twist clockwise.

Reinsert bulb socket in lamp and twist
clockwise.
S203 MY03_A.book Page 294 Tuesday, January 28, 2003 2:22 PM

295 Practical hints
Replacing bulbs
Parking and standing lamp bulb
Switch off the lights.

Open the hood (
page 234).

Press the clamp and remove headlamp
cover2.

Pull out the bulb socket6 with the
bulb.

Pull the bulb out of the bulb socket.

Insert a new bulb in the socket.

Reinstall the bulb socket.

Align headlamp cover2 and click into
place.Bi-Xenon* headlamps
1Bulb socket for turn signal lamp
2Headlamp cover for high beam bulb,
parking and standing lamp
3Headlamp cover for Bi-Xenon lamp4High beam headlamp bulb
5Bayonet socket for high beam head-
lamp bulb
6Bulb socket for parking and standing
lamp
High beam bulb

Switch off the lights.

Open the hood (
page 234).

Press the clamp and remove headlamp
cover2.

Pull electrical connector4 off.
Warning!
G
Do not remove the cover3 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.

S203 MY03_A.book Page 295 Tuesday, January 28, 2003 2:22 PM

296 Practical hintsReplacing bulbs
Twist bayonet socket5 counterclock-
wise to the stop (do not remove).

Pull the bulb out of the socket.

Insert the new bulb so that the base lo-
cates in the recess in the bayonet
socket5.

Twist bayonet socket clockwise until
you hear it snap into place.

Plug the connector onto the bulb.

Align headlamp cover2 and click into
place.Front turn signal lamp bulb

Switch off the lights.

Open the hood (
page 234).

Twist bulb socket1 counterclockwise
and pull out.

Push bulb into socket, turn counter-
clockwise and remove.

Insert new bulb in socket, push in and
twist clockwise.

Reinsert bulb socket in lamp and twist
clockwise.Parking and standing lamp bulb

Switch off the lights.

Open the hood (
page 234).

Press the clamp and remove headlamp
cover2.

Pull out the bulb socket6 with the
bulb.

Pull the bulb out of the bulb socket.

Insert a new bulb in the socket.

Reinstall the bulb socket.

Align headlamp cover2 and click into
place.
S203 MY03_A.book Page 296 Tuesday, January 28, 2003 2:22 PM

298 Practical hintsReplacing bulbs4Brake lamp
5Turn signal lamp
6Backup lamp
7Rear fog lamp (driver’s side)/tail lamp,
parking, standing and side marker
lamp

Twist bulb socket counterclockwise
and pull out.

Gently push bulb into socket, turn
counterclockwise and remove.

Insert new bulb and reinstall bulb sock-
et.

Reinstall bulb holder and close trim
panel.License plate lamp
1Screws

Switch off the lights.

Loosen both screws1 and remove
lamp.

Replace the tubular lamp and reinstall
lamp.

Retighten the screws.
S203 MY03_A.book Page 298 Tuesday, January 28, 2003 2:22 PM