2007 MERCEDES-BENZ ML320CDI turn signal bulb

463 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
.
Turn signal
Front Left
The left front turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 487).
Turn signal
Front Right
The right front turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 487).
Turn signal
Rear Left
The left rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 490).
Turn signal
Rear Right
The right rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.

Replace the bulb as soon as possible
(page 490).
Turn signal
Left mirror
The turn signal in the left exteri-
or rear view mirror is malfunc-
tioning. This message will only
appear if a number of critical
LEDs have stopped working.

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Turn signal
Right mirror
The turn signal in the right exte-
rior rear view mirror is malfunc-
tioning. This message will only
appear if a number of critical
LEDs have stopped working.

Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.

482 Practical hintsReplacing bulbsBulbs
Safe 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 Light Truck Center for
headlamp adjustment.
i
If the headlamps or front fog lamps are
fogged up on the inside as a result of high humid-
ity, driving the vehicle a distance with the lights
on should clear up the fogging.
i
Substitute bulbs will be brought into use
when the following lamps malfunction:


Turn signal lamps


Brake lamps


Parking lamps


Tail lamps
Read and observe the messages in the multi-
function display (
page 458).

483 Practical hints
Replacing bulbs
Front lamps
Rear lamps
Lamp
Type
1
Parking and standing
lamp
W5W
2
Headlamps:
High beam/high beam
flasher
H7 (55 W)
Bi-Xenon headlamps*:
High beam/high beam
flasher spot lamp
H7 (55 W)
3
Headlamps:
Low beam
H7 (55 W)
Bi-Xenon headlamps*:
Low beam
1
1Vehicles with Bi-Xenon* headlamps: Do not re-
place the Bi-Xenon bulbs yourself. Contact an
authorized Mercedes-Benz Light Truck Center.
D2S-35 W
4
Additional turn signal
lamp
LED
5
Side marker lamp
WY 5 W
Lamp
Type
6
Turn signal lamp
3457 AK
S-8
(30/2.2 cp
bulb)
7
Front fog lamp
H11 (55 W)
Corner-illuminating
front fog lamp*
H11 (55 W)
Lamp
Type
8
High mounted brake
lamp
LED
9
Brake lamp
P21W
a
Backup lamp
P21W
b
Turn signal lamp
PY 21 W
c
Side marker lamp
P21/4W
d
Tail, parking, standing
lamp, rear fog lamp
(only driver’s side)
P21/4W
e
License plate lamps
C5W

484 Practical hintsReplacing 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 Light Truck Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:


the additional turn signal lamps in the
exterior rear view mirrors


the high mounted brake lamp


the Bi-Xenon* low beam lamps


the Bi-Xenon high beam flasher spot-
light*
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing 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.
!
Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced by a qualified
specialist workshop having the necessary skills
and tools for carrying out the work required.
i
Replacing the bulbs for the front lamps is a
technically complex process. For your conve-
nience, we recommend that you have this work
carried out by an authorized Mercedes-Benz
Light Truck Center.
Have the headlamp adjustment checked
regularly.

485 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 136).

Open the hood (
page 356).1Housing cover for low beam halogen
headlamp
2Housing cover for high beam halogen
bulb (high beam and high beam flasher)
3Bulb socket for parking and standing
lamp bulb
4Bulb socket for turn signal lamp bulb
5Bulb socket for side marker lamp bulbLow beam bulb (halogen headlamp)
1Low beam headlamp cover
2Bulb socket for low beam headlamp
i
ML 500 only:
Before replacing a bulb in the right headlamp,
the fusebox in the engine compartment must be
removed. This should be performed by a quali-
fied specialist workshop, for instance by an
authorized Mercedes-Benz Light Truck Center.

487 Practical hints
Replacing bulbs

Turn cover1 counterclockwise.

Remove cover1.

Turn bulb socket2 counterclockwise.

Pull bulb socket2 out of the
headlamp housing.

Pull the high beam bulb out of bulb
socket2.

Insert the new high beam bulb into bulb
socket2.

Insert bulb socket2 into the
headlamp housing.

Turn bulb socket2 clockwise until it
engages.

Place cover1 on the opening in the
headlamp housing.

Turn cover1 clockwise until it engag-
es.Turn signal lamp bulb
1Bulb socket for turn signal lamp

Turn bulb socket1 counterclockwise.

Pull bulb socket1 out of the
headlamp housing.

Pull the turn signal bulb out of bulb
socket1.

Insert the new turn signal bulb into bulb
socket1.

Insert bulb socket1 into the
headlamp housing.

Turn bulb socket1 clockwise until it
engages.Parking and standing lamp bulb

Turn bulb socket3 (
page 485)
counterclockwise.

Pull bulb socket3 out of the
headlamp housing.

Pull the bulb out of bulb socket3.

Insert the new bulb into bulb
socket3.

Insert bulb socket3 into the
headlamp housing.

Turn bulb socket3 clockwise until it
engages.

489 Practical hints
Replacing bulbs

Turn the hook or screwdriver 90°.

Hold the cover1 and pull the hook or
screwdriver outwards.
You can now access the front fog lamp.
Example ML 350, ML 500 without Sport
Package; Sport Package similar3Retaining screws
Turn retaining screws3 counterclock-
wise.

Remove front fog lamp2 out of the
bumper.

Pull electrical connector off.4Bulb socket of front fog lamp bulb

Turn bulb socket4 counterclockwise.

Pull bulb socket4 out of the housing.

Pull the front fog lamp bulb out of bulb
socket4.

Insert the new front fog lamp bulb into
bulb socket4.

Insert bulb socket4 into the housing.

Turn bulb socket4 clockwise until it
engages.

Plug in the electrical connector.

Insert front fog lamp2 back into
bumper.

Fasten retaining screws3.

Reinsert cover1 and press it in until it
engages.
Additional turn signal lamps bulbs
The additional turn signal lamps in the
exterior 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 turn signal unit replaced
by an authorized Mercedes-Benz Light
Truck Center.

491 Practical hints
Replacing bulbs
Opening the passenger side trim panel:
1Lock
2Cover in right side trim panel
Insert a suitable object such as a coin
into the slot of lock1.

Turn lock1 counterclockwise by 90°.

Remove cover2.Replacing bulbs
Example rear lamp passenger-side1Brake lamp
2Backup lamp
3Rear fog lamp (only driver’s side), tail
lamp, parking and standing lamp
4Side marker lamp
5Turn signal lamp
Depending on which bulb needs to be
replaced, turn the respective bulb
socket1-5 counterclockwise.

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.

Align the respective bulb
socket1-5 and turn it clockwise.

Make sure bulb socket is attached
properly.

Close the respective cover in the cargo
compartment.

Close the tailgate (
page 121).