2006 MERCEDES-BENZ ML350 headlamp

419 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Active headlamp
currently unavailable
The active Bi-Xenon* headlamps
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamps
Substitute bulb on
The active Bi-Xenon* headlamps
system is malfunctioning. An-
other light is being used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamps
inoperative
The active Bi-Xenon* headlamps
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Active headlamp
s
Display malfunction
The active Bi-Xenon* headlamp
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
High beam,
left
The left high beam lamp is mal-
functioning.

Replace the bulb as soon as possible.
High beam,
right
The right high beam lamp is mal-
functioning.

Replace the bulb as soon as possible.
License plate lamp,
left
The left license plate lamp is
malfunctioning.

Replace the bulb as soon as possible.
License plate lamp,
right
The right license plate lamp is
malfunctioning.

Replace the bulb as soon as possible.

420 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Light sensor
Drive to workshop
The lamp sensor is malfunction-
ing. The headlamps switch on
automatically.

In the control system, set lamp operation
to manual mode.

Switch on headlamps using the exterior
lamp switch.
Low beam,
left
The left low beam lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Low beam,
right
The right low beam lamp is mal-
functioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Marker lamp
,
front left
The front left side marker lamp is
malfunctioning.

Replace the bulb as soon as possible.
Marker lamp
,
front right
The front right side marker lamp
is malfunctioning.

Replace the bulb as soon as possible.
Parking lamp, front left
Substitute bulb on
The left parking lamps are mal-
functioning. A substitute bulb is
being used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Parking lamp, front right

Substitute bulb on
The right parking lamps are mal-
functioning. A substitute bulb is
being used.

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

443 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
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. See an
authorized Mercedes-Benz Light Truck
Center for headlamp adjustment.Front lamps
iSubstitute bulbs will be brought into
use when the following lamps malfunc-
tion:

Brake lamps


Parking lamps


Turn signal lamps


Tail lamps
Observe the messages in the multi-
function display (
page 418).
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.
Lamp
Type
1
Parking and standing
lamp
W5W
2
High beam/high
beam flasher lamp
H7 (55 W)
3
Low beam
1
1Vehicles with Bi-Xenon headlamps*: Do not re-
place the Bi-Xenon bulbs yourself. See your autho-
rized Mercedes-Benz Light Truck Center.
H7 (55 W)
Bi-Xenon*:
D2S-35 W
4
Additional turn signal
lamp
LED
5
Side marker lamp
WY 5 W
6
Turn signal lamp
3457 AK S-8
(30/2.2 cp
bulb)
7
Front fog lamp
H11 (55 W)

445 Practical hints
Replacing bulbs
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:

Additional turn signals in the exterior
rear view mirrors


Bi-Xenon lamps*


Front fog lamps (vehicles with sport
package*)


High mounted brake lamp
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 138).

Open the hood (
page 326).
1Housing cover for low beam halogen or
Bi-Xenon* headlamp
2Housing cover for high beam halogen
bulb (vehicles with halogen bulbs: high
beam and high beam flasher; vehicles
with Bi-Xenon* headlamps: high beam
flasher only)
3Bulb socket for parking and standing
lamp bulb
4Bulb socket for turn signal lamp bulb
5Bulb socket for side marker lamp bulb

446 Practical hintsReplacing bulbsReplacing low beam bulbs
1Housing cover for low beam halogen or
Bi-Xenon* headlamp
2Electrical connector for low beam
headlamp bulb (halogen headlamps
only)Bi-Xenon* headlamp Low beam halogen headlamp

Turn housing cover1 counterclock-
wise and remove it.

Turn electrical connector2 with bulb
counterclockwise out of housing.

Remove old bulb from connector.

Insert the new bulb so that its socket
locates in the recess of the lamp hous-
ing.

Place electrical connector2 with bulb
into housing and turn clockwise.

Align housing cover1 and turn it
clockwise.
Warning!
G
Do not remove the cover
1
for the
Bi-Xenon* headlamp. Because of high volt-
age in Xenon* lamps, it is dangerous to re-
place the bulb or repair the lamp and its
components. We recommend that you have
such work done by a qualified technician.

447 Practical hints
Replacing bulbs
Replacing high beam halogen bulb,
parking and standing lamp
1Housing cover for high beam halogen
bulb (vehicles with halogen bulbs: high
beam and high beam flasher; vehicles
with Bi-Xenon* headlamps: high beam
flasher only), parking and standing
lamp2Electrical connector for high beam
halogen bulb (vehicles with halogen
bulbs: high beam and high beam flash-
er; vehicles with Bi-Xenon* headlamps:
high beam flasher only)High beam halogen bulb

Turn housing cover1 counterclock-
wise and remove it.

Turn electrical connector2 with bulb
counterclockwise out of housing.

Remove old bulb from connector.

Insert the new bulb so that its socket
locates in the recess of the lamp hous-
ing.

Place electrical connector2 with bulb
into housing and turn clockwise.

Align housing cover1 and turn it
clockwise.

451 Practical hints
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
Turn the respective bulb socket with
the bulb counterclockwise and remove
it.

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 bulb socket and turn it clockwise.
License plate lamp
1License plate lamp cover
2Screw

Loosen both screws2.

Remove license plate lamp cover1.

Replace the tubular bulb.

Reinstall license plate lamp cover1.

Retighten screws2.
Adjusting headlamp aim
VVertical centerline
HHeadlamp mounting high, measured
from the center
iHigh beam adjustments simultaneous-
ly aim the low beam.
Vehicle should have a normal tailgate
load.

452 Practical hintsReplacing bulbsCorrect headlamp adjustment is extremely
important. To check and readjust a head-
lamp, follow the steps described:
Park the vehicle on a level surface
25 feet (7.6 m) from a vertical test
screen or wall.

Switch the headlamps on
(page 138).
If the beam does not show a beam pattern
as indicated in the figure left, then follow
the steps below:

Open hood (
page 326).
2Headlamp vertical adjustment screw
3Headlamp vertical adjustment screw

Always turn adjustment screws2
and3 simultaneously for vertical ad-
justment until the headlamp is adjust-
ed as shown1. Turn clockwise for
upward movement and counterclock-
wise for downward movement.
Graduations:
screw2:0.50° pitch
screw3:0.67° pitch
The left and right headlamps must be ad-
justed individually.iIf it is not possible to obtain a proper
headlamp adjustment, have the system
checked at an authorized
Mercedes-Benz Light Truck Center.