Page 621 of 723
618 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Turn signal,
Rear LeftT h e l e f t r e a r t u r n s i g n a l l a m p i s m a l f u n c t i o n -
ing. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Rear RightThe right rear turn signal lamp is malfunc-
tioning. A substitute bulb is being used.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Left mirrorThe turn signal in the left exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.Have the LEDs replaced as soon as possible.
Turn signal,
Right mirrorThe turn signal in the right exterior rear view
mirror is malfunctioning. This message will
only appear if all light emitting diodes have
stopped working.Have the LEDs replaced as soon as possible.
Turn signal,
Front LeftThe left front turn signal lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
Turn signal,
Front RightThe right front turn signal lamp is malfunc-
tioning.Contact an authorized Mercedes-Benz
Center as soon as possible.
High beam, LeftThe left high beam lamp is malfunctioning.Replace the bulb as soon as possible
(
page 641).
High beam, RightThe right high beam lamp is malfunctioning.Replace the bulb as soon as possible
(
page 641).
Page 646 of 723
643 Practical hints
Replacing bulbs
Notes on bulb replacementOnly 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:
the Bi-Xenon lamps
the front turn signal lamps
the front fog lamps
the additional turn signal lamps in the
exterior rear view mirrors
the parking and standing lamps
the front side marker lamps
the high mounted brake lamps
the brake, tail and rear standing lamps
the rear side marker lamps
the rear fog lamp
the rear turn signal lamps
the rear side marker lamps
the 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.
iHave the headlamp adjustment checked
regularly.
Page 649 of 723
646 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 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 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.