MERCEDES-BENZ M-CLASS 2007 Owners Manual

480 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Replacement batteries: Lithium, type
CR 2025 or equivalent.

Remove mechanical key1 from the
SmartKey or SmartKey with
KEYLESS-GO* (
page 475).1Mechanical key
2Battery compartment

Insert mechanical key1 into opening.

Press mechanical key1 in direction of
arrow.
The battery compartment2 is
unlatched.

Pull battery compartment2 out of the
SmartKey housing.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When inserting the batteries, make sure
they are clean and free of lint.
i
When replacing batteries, always replace
both batteries.
The required replacement batteries are available
at any Mercedes-Benz Light Truck Center.
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481 Practical hints
Replacing SmartKey batteries
3Batteries
4Contact spring

Pull out batteries3.

Using a line-free cloth, insert new
batteries3 under contact springs4
with the positive terminal (+) side
facing up.

Return battery compartment2 into
housing until it locks into place.

Slide mechanical key1 back into the
SmartKey or SmartKey with
KEYLESS-GO*.

Check the operation of the SmartKey
or SmartKey with KEYLESS-GO*.
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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).
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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
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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.
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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.
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486 Practical hintsReplacing bulbs
Turn cover1 counterclockwise.

Remove cover1.

Turn bulb socket2 counterclockwise.

Pull bulb socket2 out of the
headlamp housing.

Pull the low beam bulb out of bulb
socket2.

Insert the new low 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.Bi-Xenon* low beam/high beam
headlampHigh beam bulb (halogen headlamp)
1High beam headlamp cover
2Bulb socket for high beam headlamp
Warning!
G
Do not remove the low beam/high beam
cover for the Bi-Xenon* headlamp. Because
of high voltage in Xenon* lamps, it is danger-
ous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.
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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.
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488 Practical hintsReplacing bulbsSide marker lamp bulb
Turn bulb socket5 (
page 485)
counterclockwise.

Pull bulb socket5 out of the
headlamp housing.

Pull the side marker bulb out of bulb
socket5.

Insert the new side marker bulb into
bulb socket5.

Insert bulb socket5 into the
headlamp housing.

Turn bulb socket5 clockwise until it
engages.Front fog lamp bulbs
Removing front fog lamp cover:
1Cover
2Front fog lamp or corner-illuminating
front fog lamp*

Insert a suitable object (e.g. screwdriv-
er) at point indicated by the arrow and
pry out cover1.
Cover1 is released.

Swing cover1 outwards and take it
off.
Removing front fog lamp cover (Vehicles
with AMG Sport Package* or ML 63 AMG):
1Cover
2Front fog lamp

Use a suitable object (e.g. hook or a
screwdriver) and place the hook or
screwdriver carefully between lower
end of cover and bumper.
!
If not done carefully and properly, damage
to the bumper can result. We therefore recom-
mend that you have this work carried out by an
authorized Mercedes-Benz Light Truck Center.
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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.
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