bulb MERCEDES-BENZ GLK SUV 2012 User Guide

Keep bulbs out of the reach of children. Oth-
erwise, they could damage the bulbs, for
example, and injure themselves.
Never use a bulb which has been dropped.
Such a bulb may break or even explode and
injure you.
Halogen bulbs are pressurised and can
explode when you change them, particularly
if they are very hot. You should therefore wear
eye protection and gloves when you are
changing them.
There are bulbs other than the xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 119). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
If you require assistance changing bulbs, con-
sult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when fitting.
Only use bulbs of the correct type.
If the new bulb still does not light up, consult
a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly. Overview of bulb replacement – bulbs
You can replace the following bulbs. The
details for the bulb type can be found in the
legend. Halogen headlamps
:
Dipped-beam headlamp: H7 55 W
; Main-beam headlamp/side lamp/park-
ing lamp: H15 55 W/15 W
= Turn signal lamp: PWY 24 W Vehicles with Intelligent Light System
:
Cornering lamp: H7 55 W Tail lamps
:
Reversing lamp: W 16 W
; Turn signal lamp: PY 21 W Replacing bulbs
119Lights and windscreen wipers Z

Replacing the front bulbs
Dipped-beam headlamps (halogen
headlamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X At the bulb holder, push the bulb upwards,
disconnect it and pull it out of bulb
holder ;.
X Insert the new bulb into bulb holder ;,
push it down and secure it in place.
X Attach housing cover :and turn it clock-
wise until it engages.
Main-beam headlamps and parking/
side lamps (halogen headlamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Turn bulb anti-clockwise and pull it out. X
Insert the new bulb into bulb holder ;and
turn it clockwise.
X Align housing cover :and turn it clock-
wise until it engages.
Turn signal lamp (halogen headlamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Grip the back of lever extension ;and pull
it out in a straight line.
X Take the bulb out of lever extension ;.
X Insert the new bulb into lever exten-
sion ;. X
Re-insert lever extension ;downwards
(swelling) with guide rail =.120
Replacing bulbsLights and windscreen wipers

Cornering light function (Intelligent
Light System)
X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anti-clockwise and
pull it out.
X Push the lever of holder ;upwards until
holder ;is released.
X Pull out bulb holder ;.
X Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert holder ;from above and press it
until it engages.
X Align housing cover :and turn it clock-
wise until it engages. Replacing the rear bulbs
Opening and closing the side trim pan-
els You must open the side trim panel in the lug-
gage compartment before you can replace
the bulbs in the tail lamps. Left-hand side trim panel
Right-hand side trim panel
X
To open: turn release knob :90° in the
direction of the arrow and remove side trim
panel ;.
X To close: insert side trim panel ;and turn
release knob :90°in the opposite direc-
tion to the arrow.
Tail lamps X
Switch off the lights.
X Open the luggage compartment.
X Open the side trim panel (Y page 121). Replacing bulbs
121Lights andwindscreen wipers Z

X
Pull out connector :.
X Turn wing nut ;90° anti-clockwise and
pull out the bulb holder. X
Turn signal :
:: lightly press the bulb into
the bulb holder, turn it anti-clockwise and
remove it from bulb holder.
X Insert the new bulb into the bulb holder and
turn it clockwise.
X Reversing lamp ; ;:remove the bulb from
bulb holder.
X Insert the new bulb into the bulb holder.
X Refit bulb holder.
X Turn wing nut 90° clockwise.
X Insert the connector.
X Close the side trim panel (Y page 121).Windscreen wipers
Switching the windscreen wipers on/
off G
WARNING
The windscreen will not longer be wiped prop-
erly if the wiper blades are worn. This could
prevent you from observing the traffic condi-
tions, thereby causing an accident. Replace
the wiper blades twice a year, ideally in spring
and autumn.
! Do not operate the windscreen wipers
when the windscreen is dry, as this could damage the wiper blades. Moreover, dust
that has collected on the windscreen can
scratch the glass if wiping takes place when
the windscreen is dry.
! If the windscreen wipers leave smears on
the windscreen after the vehicle has been
washed in an automatic car wash, this may
be due to wax or other residue. Clean the
windscreen with washer fluid after an auto-
matic car wash. Combination switch
1
$ Windscreen wipers off
2 Ä Intermittent wipe, low 8
3 Å Intermittent wipe, high 9
4 ° Continuous wipe, slow
5 ¯ Continuous wipe, fast
B í Single wipe/ îto wipe the wind-
screen using washer fluid
X Turn the key to position 1or 2in the ignition
lock.
X Turn the combination switch to the corre-
sponding position.
! Vehicles with a rain sensor: if the wind-
screen becomes dirty in dry weather con-
ditions, the windscreen wipers may be acti-
vated inadvertently. This could damage the
windscreen wiper blades or scratch the
windscreen.
For this reason, you should always switch
off the windscreen wipers in dry weather.
8 Rain sensor set to low sensitivity.
9 Rain sensor set to high sensitivity. 122
Windscreen wipersLights and windscreen wipers

Display messages Possible causes/consequences and
M
MSolutions 6
Rear centre mal‐ Rear centre mal‐
function Consult function Consult
workshop workshop G
WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
SRS has malfunctioned at the rear centre. The 6warning lamp
also lights up in the instrument cluster.
X Visit a qualified specialist workshop. 6
Left Left
windowbag
windowbag mal‐
mal‐
function Consult
function Consult
workshop workshop orRight
Right
windowbag malfunc‐
windowbag malfunc‐
tion Consult work‐ tion Consult work‐
shop shop There is a malfunction in the left-hand and/or right-hand window-
bag.
The
6 warning lamp also lights up in the instrument cluster.
G WARNING
The left or right windowbag may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
X Visit a qualified specialist workshop. Lights (4-button multifunction steering wheel)
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
M MSolutions b
Left cornering Left cornering
light light
orRight cor‐
Right cor‐
nering light
nering light The left or right-hand cornering light is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left dipped beam Left dipped beam
or
Right dipped Right dipped
beam
beam The left or right-hand dipped-beam headlamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Trailer left tail Trailer left tail
lamp lamp
orTrailer
Trailer
right tail lamp
right tail lamp The left or right-hand trailer tail lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. Display
messages
257On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions b
Trailer left Trailer left
indic. indic.
orTrailer
Trailer
right indic
right indic The left or right-hand trailer turn signal lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. b
Trailer brake lamp Trailer brake lamp The trailer brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. b
Rear left indica‐ Rear left indica‐
tor tor
orRear right
Rear right
indicator
indicator The rear left-hand or rear right-hand turn signal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Front left indica‐ Front left indica‐
tor tor
orFront right
Front right
indicator
indicator The front left-hand or front right-hand turn signal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left Left
mirror
mirror indica‐
indica‐
tor
tor orRight mir‐
Right mir‐
ror indicator
ror indicator The turn signal in the left-hand or right-hand exterior mirror is
faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Third brake lamp Third brake lamp The third brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Tail/brake lamp, Tail/brake lamp,
left left
orTail/brake
Tail/brake
lamp, right
lamp, right The left or right-hand tail lamp/brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. 258
Display
messagesOn-board computer and displays

Display messages Possible causes/consequences and
M
MSolutions b
Left main Left main
beam beamorRight main
Right main
beam
beam The left or right-hand high beam is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left Left
licence
licence plate
plate
lamp
lamporRight Right
licence plate lamp
licence plate lamp The left or right-hand licence plate lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left fog lamp Left fog lamp
or
Right fog lamp
Right fog lamp The left-hand or right-hand front foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Rear fog lamp Rear fog lamp The rear foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Front Front
left
leftparking
parking
lamp
lamp orFront
Front
right parking lamp
right parking lamp The front left or front right parking lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left revers. Left revers.
lamp lamporRight rev‐
Right rev‐
ers. lamp
ers. lamp The reversing lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left daytime driv‐ Left daytime driv‐
ing lamp ing lamp
orRight
Right
daytime driving
daytime driving
lamp lamp The left-hand or right-hand daytime driving lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. Display
messages
259On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions b
malfunction malfunction The exterior lighting is faulty.
X
Visit a qualified specialist workshop. Vehicles with trailer tow hitch: a fuse may have blown.
X Check the fuses (Y page 346).
X If necessary, replace the blown fuse. Observe the warning notes
as you do so.
If the display message continues to be displayed:
X Visit a qualified specialist workshop. b
AUTO AUTO
lights
lights inoper‐
inoper‐
ative
ative The light sensor is faulty.
X
Visit a qualified specialist workshop. b
Switch off lights Switch off lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to Ã.Lights (12-button multifunction steering wheel)
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
M MSolutions b
Left cornering Left cornering
light light
orRight cor‐
Right cor‐
nering light
nering light The left or right-hand cornering light is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left dipped beam Left dipped beam
or
Right dipped Right dipped
beam
beam The left or right-hand dipped-beam headlamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Trailer left tail Trailer left tail
lamp lamp
orTrailer
Trailer
right tail lamp right tail lamp The left or right-hand trailer tail lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. 260
Display
messagesOn-board computer and displays

Display messages Possible causes/consequences and
M
MSolutions b
Trailer left indi‐ Trailer left indi‐
cator cator
orTrailer
Trailer
right indicator
right indicator The left or right-hand trailer turn signal lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. b
Trailer brake lamp Trailer brake lamp The trailer brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself.
or
X Visit a qualified specialist workshop. b
Rear left indica‐ Rear left indica‐
tor tor
orRear right
Rear right
indicator
indicator The rear left-hand or rear right-hand turn signal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Front left indica‐ Front left indica‐
tor tor
orFront right
Front right
indicator
indicator The front left-hand or front right-hand turn signal is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left Left
mirror
mirror indica‐
indica‐
tor
tor orRight mir‐
Right mir‐
ror indicator
ror indicator The turn signal in the left-hand or right-hand exterior mirror is
faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Third brake lamp Third brake lamp The third brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left-hand tail Left-hand tail
lamp/brake lamp/brake
lamp lamporRight-hand
Right-hand
tail lamp/brake
tail lamp/brake
lamp lamp The left or right-hand tail lamp/brake lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. Display
messages
261On-board computer and displays Z

Display messages Possible causes/consequences and
M
MSolutions b
Left main Left main
beam beamorRight main
Right main
beam
beam The left or right-hand high beam is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left Left
licence
licence plate
plate
lamp
lamporRight Right
licence plate lamp
licence plate lamp The left or right-hand licence plate lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left fog lamp Left fog lamp
or
Right fog lamp
Right fog lamp The left-hand or right-hand front foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Rear fog lamp Rear fog lamp The rear foglamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Front Front
left
leftparking
parking
lamp
lamp orFront
Front
right parking lamp
right parking lamp The front left or front right parking lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. b
Left revers. lamp Left revers. lamp
or
Right revers. Right revers.
lamp
lamp The left or right-hand reversing lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 119).
or
X Visit a qualified specialist workshop. b
Left daytime driv‐ Left daytime driv‐
ing lamp ing lamp
orRight
Right
daytime driving
daytime driving
lamp lamp The left-hand or right-hand daytime driving lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 118).
or
X Visit a qualified specialist workshop. 262
Display
messagesOn-board computer and displays