bulb MERCEDES-BENZ ML550 2010 W164 User Guide

Replacing bulbs
Safety notes
Safe vehicle operation depends on proper
exterior lighting and signaling to a large
degree.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment.
GWarning!
Bulbs and bulb sockets can be very hot. Allow
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
R touch or move it when hot
R drop the bulb
R 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.
i Since replacing bulbs is a technically
highly demanding process, we recommend
to have them replaced at an authorized
Mercedes-Benz Center.
i If the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with
the lights on should clear up the fogging.Replacing bulbs311Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 311Z

Bulbs
You can replace the following bulbs yourself:
Halogen headlampsType:Low-beam lamp: H7 55 W;High-beam lamp/High-beam flasher
lamp: H7 55 W
=Parking and standing lamp: W 5 W?Turn signal lamp: 3457AASide marker lamp: WY 5 WBi-Xenon headlampsType:High-beam flasher lamp/High-beam
flasher spot lamp: H7 55 W
;Parking and standing lamp: W 5 W=Turn signal lamp: 3457A?Side marker lamp: WY 5 WStandard rear lampsType:Brake lamp: P 21 W;Backup lamp: P 21 W=Tail lamp, parking and standing lamp,
rear foglamp (driver’s side only): P 21 W
?Side marker lamp: P 21 WATurn signal lamp: PY 21 W312Replacing bulbsPractical hints
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LED rear lampsType:Backup lamp: W 16 W;Rear foglamp (driver’s side only):
W 16 W
=Rear foglamp (driver’s side only):
W 16 W
License plate lampsType:License plate lamps: C 5 WNotes on bulb replacement
! Do not replace LEDs or bulbs not
described in this section. You could
otherwise damage the LEDs, the bulbs or
parts of the vehicle. Only have the LEDs and
bulbs replaced at an authorized Mercedes-
Benz Center.
ROnly use 12-volt bulbs of the same type and
with the specified watt rating.
RSwitch the lights off before changing a bulb
to prevent short circuits.
RAlways use a clean lint-free cloth when
handling bulbs.
RYour hands should be dry and free of oil and
grease.
RIf the newly installed bulb does not come
on, contact an authorized Mercedes-Benz
Center.
iMercedes-Benz recommends using
Longlife (LL) bulbs.
Replacing bulbs for front lamps
Before you start to replace a bulb for a front
lamp, do the following:
XSwitch off the ignition.XTurn the exterior lamp switch to position
$.
XOpen the hood (Y page 212).Replacing bulbs313Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 313Z

Example illustration: Driver’s side headlamp
:Housing cover for low-beam halogen or Bi-
Xenon headlamp
;Housing cover for high-beam halogen
bulb (high beam and high-beam flasher)
=Bulb socket for parking and standing lamp
bulb
?Bulb socket for front turn signal lamp bulbABulb socket for side marker lamp bulbGWarning!
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. It is
recommended to have such work done by a
qualified technician.
Low-beam bulb (halogen headlamps
only)
BBulb socket for low-beam headlampXTurn housing cover : counterclockwise
and remove it.
XTurn bulb socket B with the bulb
counterclockwise and remove it.
XPull bulb E out of bulb socket B.
iDo not remove clip D from bulb socket
B.
XGently press the new bulb into bulb socket
B.
XPlace bulb socket B back into the housing
and turn it clockwise until it engages.
XAlign housing cover : and turn it
clockwise until it engages.
High-beam and high-beam flasher bulb
(halogen headlamps only)/high-beam
flasher bulb (Bi-Xenon headlamps only)
CBulb socket for high-beam headlamp314Replacing bulbsPractical hints
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XTurn housing cover ; counterclockwise
and remove it.
XTurn bulb socket C with the bulb
counterclockwise and remove it.
XPull the bulb out of bulb socket C.XGently press the new bulb into bulb socket
C.
XPlace bulb socket C back into the housing
and turn it clockwise until it engages.
XAlign housing cover ; and turn it
clockwise until it engages.
Parking and standing lamp bulb,
front turn signal lamp bulb,
side marker lamp bulb
XTurn respective bulb socket =, ? or A
(Y page 314) with the bulb
counterclockwise and remove it.
XPull the bulb out of the bulb socket.XGently press the new bulb into the bulb
socket.
XPlace bulb socket =, ? or A back into
the housing and turn it clockwise until it
engages.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following:
XSwitch off the ignition.XTurn the exterior lamp switch to position
$.
Tail lamp unit
To access the tail lamp units, you first have to
remove the cover in the corresponding side
trim panel of the cargo compartment.
XOpen the tailgate.Opening the driver’s side trim panelXTurn lock : counterclockwise by 90°.XRemove cover ;.
Removing storage compartment
Example illustration: Storage compartmentwithout sound system
XRemove everything from storage
compartment ;.
XInsert a suitable object such as a coin into
the slot of lock :.
XTurn lock : by 90° in direction of the
arrow.
XRemove storage compartment ;.Replacing bulbs315Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 315Z

Opening the passenger-side trim panelXInsert a suitable object such as a coin into
the slot of lock :.
XTurn lock : by 90° in direction of the
arrow.
XRemove cover ;.
Replacing bulbs
Example illustration: Standard rear lamp driver’sside
:Brake lamp bulb socket;Rear turn signal lamp bulb socket=Side marker lamp bulb socket?Tail lamp, parking and standing lamp and
rear fog lamp (driver’s side only) bulb
socket
ABackup lamp bulb socket
Example illustration: LED rear lamp driver’s side
:Backup lamp bulb socket;Rear fog lamp bulb sockets (driver’s side
only)
XDepending on which bulb needs to be
replaced, turn the respective bulb socket
counterclockwise.
XPull the bulb socket out of the housing.XStandard rear lamp: Gently press onto the
bulb and turn it counterclockwise out of its
bulb socket.
LED rear lamp: Pull the bulb out of its bulb
socket.
XStandard rear lamp: Gently press the new
bulb into its bulb socket and turn it
clockwise until it engages.
LED rear lamp: Gently press the new bulb
into its bulb socket.
XAlign the bulb socket and turn it clockwise.XMake sure the bulb socket is attached
properly.
XClose the respective cover in the cargo
compartment.
XClose the tailgate.316Replacing bulbsPractical hints
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License plate lampsXLoosen screws : of lamp cover to be
removed.
XRemove lamp cover ;.XReplace the bulb.XReinstall lamp cover ;.XRetighten screws :.
Adjusting headlamp aim
:V Vertical centerline;H Horizontal mounting height, measured
from the center
Correct headlamp adjustment is extremely
important. High beam adjustments
simultaneously aim the low beam. To check
and readjust a headlamp, follow the steps
described:
XPark the vehicle on a level surface 25 feet
(7.6 m) from a vertical test screen or wall.
XMake sure the vehicle has a normal tailgate
load.
XSwitch on the low beam headlamps L.
If the beam does not show a beam pattern as
indicated in the figure left, then follow the
steps below:
XOpen the hood (Y page 212).
The adjustment screws are located under the
cover panel.
XInsert a suitable tool into the openings in
the panel cover. The direction of arrows
= and ? indicate the angle in which the
tool has to be inserted in oder to access the
adjustment screws.
XAlways turn the adjustment screws equally
for vertical adjustment until the headlamp
is adjusted as shown in :. Turn clockwise
for upward movement and
counterclockwise for downward
movement.
Graduations:
RScrew at arrow =: 0.67° pitch
RScrew at arrow ?: 0.50° pitch
The left and right headlamps must be
adjusted individually.
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