2008 MERCEDES-BENZ CL-Class Comand Manual

688 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 ad-
justment.
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:


Brake lamps


Rear fog lamps


Front parking lamps


Tail lamps


Turn signal lamps
Read and observe messages in the multifunction
display (
page 622).

689 Practical hints
Replacing bulbs
Bulbs Front lamps Rear lamps
Lamp
Type
1
Low and high beam
lamp
1
1Bi-Xenon headlamps: Low beam and high beam
use the same D1S-35W lamp. Do not replace the
Bi-Xenon bulbs yourself. Contact an authorized
Mercedes-Benz Center.
D1S-35 W
2
Additional turn signal
lamp
LED
3
Parking and standing
lamp
W5W
4
Side marker lamp
W5W
5
High beam flasher lamp
H7-55 W
IR emitter* (for Night
View Assist*)
H11-55 W
6
Corner-illuminating
lamp
H7-55 W
7
Fog lamp
H11-55 W
8
Turn signal lamp
PY 24 W
Lamp
Type
9
High mounted brake
lamp
LED
a
Turn signal lamp
HiP 16 W
b
Brake lamp/tail lamp
and standing lamp
LED
c
License plate lamp
W5W
d
Backup lamp
HiP 16 W
e
Side marker lamp
LED
f
Rear fog lamp (driver’s
side only)
HiP 19 W

690 Practical hintsReplacing bulbsNotes 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, contact an authorized
Mercedes-Benz Center.
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:


Bi-Xenon lamps


Front turn signal lamps


Front fog lamps


Additional turn signal lamps in the exte-
rior rear view mirrors


Parking and standing lamps


Front side marker lamps


High mounted brake lamp


Brake, tail and rear standing lamps


Rear side marker lamps


Rear fog lamp


Rear turn signal lamps


Rear side marker lamps


License plate lamps
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.
!
Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced by an autho-
rized Mercedes-Benz Center.
i
Have the headlamp adjustment checked
regularly.

691 Practical hints
Replacing bulbs
Replacing bulbs for front lamps
You can only change the halogen bulbs for,
high-beam flasher lamp, corner-illuminat-
ing lamp, and IR emitter* lamp.
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to M
(page 391).

Open the hood (
page 553).
Headlamp, left1Cover
2Tab

Removing cover: Pull cover1 on
tab2 in direction of arrow and re-
move cover1.
Bi-Xenon headlampsHigh beam flasher lamp
Headlamp, left1Installation device
Pull installation device1 up (left
headlamp) or down (right headlamp)
and remove the bulb together with
installation device1 from the head-
lamp.
Warning!
G
Do not remove the cover for the Bi-Xenon
headlamp. Because of high voltage in Xenon
lamps, it is dangerous to replace the bulb or
repair the lamp and its components. We rec-
o mme n d th a t y o u h av e s uc h wo rk don e by a
qualified technician.


692 Practical hintsReplacing bulbs1Installation device
2Bulb
Pull bulb2 out of the socket.

Insert new bulb2 into the socket.

Insert installation device1 into the
headlamp so that the handle of the in-
stallation device points up (left head-
lamp) or down (right headlamp).

Pull installation device1 down (left
headlamp) or up (right headlamp) until
it engages.

Attach cover (
page 691) and let it au-
dibly engage to close.
Corner-illuminating lamp
1Bulb holder
2Wire position

Turn bulb holder1 counterclockwise
until it disengages.

Take out bulb holder1.

Take bulb out of holder.

Insert new bulb into holder and press it
all the way down.

Insert bulb holder1 into guide in
headlamp.
The tab of the bulb holder must be po-
sitioned on the upper left-hand side
and wire2 must point downward and
to the left for the left headlamp, up-
ward and to the right for the right head-
lamp.

Turn bulb holder1 clockwise until it
engages.
i
Make sure to insert the bulb in the right di-
rection. The bulb must fit plane on the socket.


693 Practical hints
Replacing bulbs
IR emitter*
1Bulb holder
2Wire position
Turn bulb holder1 counterclockwise
until it disengages.

Take out bulb holder1.

Press both catches on left and right
sides of bulb holder1 and take bulb
out of holder.

Insert new bulb into holder until it en-
gages.

Insert bulb holder1 into guide in
headlamp. Wire2 must point down-
ward and to the right.

Turn bulb holder1 clockwise until it
engages and wire2 points downward
and to the left.
Additional turn signal lamp bulbs
The additional turn signal lamps in the ex-
terior rear view mirrors have LEDs.
If a malfunction occurs or L EDs f a il to f unc -
tion, the entire turn signal unit must be re-
placed. Have the turn signal unit replaced
by an authorized Mercedes-Benz Center.
Front side marker lamp bulbs
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
lamp bulbs replaced by an authorized
Mercedes-Benz Center.
Replacing bulbs for the rear lamps
Tail lamp unit
The tail lamp unit is equipped with HiP
bulbs and LED’s.Warning!
G
The bulbs in the tail lamp unit cannot be re-
placed individually. The tail lamp bulbs are
under pressure and could explode during an
attempt to replace them.
If the tail lamps (HiP bulbs and/or LED’S)
are malfunctioning, have them replaced at
an authorized Mercedes-Benz Center.

694 Practical hintsReplacing wiper blades
Placing wiper arms in vertical positionWiper blades in vertical position
Make sure the hood is fully closed.
Vehicles with SmartKey

Turn SmartKey in starter switch
position1.

Turn combination switch to wiper
settingu (
page 400).

With wiper arm in vertical position, turn
the SmartKey in starter switch to
position0.
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise, the wiper motor could suddenly
turn on and cause injury. Warning!
G
Wiper blades are components that are sub-
ject to wear and tear. Replace the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the front window will not
be properly wiped. As a result, you may not
be able to observe surrounding traffic condi-
tions and could cause an accident.
!
To avoid damage to the hood:


The wiper arms should only be folded for-
ward when in the vertical position.


Never open the hood when the wiper arm is
folded forward.
!
Hold on to the wiper when folding the wiper
arm back. If released, the force of the impact
from the tensioning spring could crack the wind-
shield.
Do not allow the wiper arms to contact the wind-
shield glass without a wiper blade inserted.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Center.

695 Practical hints
Replacing wiper blades
Vehicles with KEYLESS-GO*
Make sure the vehicle’s on-board elec-
tronics have status 1 (
page 366).

Turn combination switch to wiper
settingu (
page 400).

Press KEYLESS-GO start/stop button
repeatedly until windshield wipers
start.

Press KEYLESS-GO start/stop button
when the wiper arms are in a vertical
position.
Removing wiper blades
Fold the wiper arm forward until it
snaps into place.

Turn the wiper blade at a right angle to
wiper arm (arrow 1).

Slide the wiper blade sideways out of
the retainer in the direction of
arrow2.
Installing wiper blades
Slide the wiper blade onto wiper arm
until it locks in place.

Rotate the wiper blade into position
parallel to wiper arm.

Fold the wiper arm backward to rest on
the windshield. Make sure you hold
onto the wiper when folding the wiper
arm back.
!
Do not pull on the wiper blade inserts. They
could tear.
!
Make certain that the wiper blades are prop-
erly installed. Improperly installed wiper blades
may cause windshield damage.