lock MERCEDES-BENZ GLK-CLASS SUV 2015 Repair Manual

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Y page 27).
Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with the lights switchedon even during the daytime. In some coun-
tries, operation of the headlamps varies due
to legal requirements and self-imposed obli-
gations.
Setting the exterior lighting
Setting options
Exterior lighting can be set using: R the light switch
R the combination switch ( Y page 118)
R the on-board computer ( Y page 231)
Light switch
Operation
1 WLeft-hand standing lamps
2 XRight-hand standing lamps
3 TParking lamps, license plate and
instrument cluster lighting
4 ÃAutomatic headlamp mode, control-
led by the light sensor
5 LLow-beam/high-beam headlamps
B RRear fog lamp
C NFog lamp (only vehicles with front
fog lamps)
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on. X Turn the light switch to Ã.
The exterior lighting (except the parking/
standing lamps) switches off automatically if
you: R remove the SmartKey from the ignition lock
R open the driver's door with the SmartKey in
position 0
Automatic headlamp mode
GWARNING
When the light switch is set to Ã, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to L .
116Exterior lighting
Lights and windshield wipers

The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle'slighting at all times. Ã is the favored light switch setting. The
light setting is automatically selected accord- ing to the brightness of the ambient light
(exception: poor visibility due to weather con-
ditions such as fog, snow or spray):
R SmartKey in position 1 in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
R With the engine running: if you have acti-
vated the "Daytime running lamps" func-
tion via the on-board computer, the day-
time running lamps or the parking lamps
and the low-beam headlamps are switched
on or off automatically depending on the
brightness of the ambient light.
X To switch on automatic headlamp
mode: turn the light switch to Ã.
Canada only:
The daytime running lamps improve the visi-
bility of your vehicle during the day. The day-
time running lamps function is required by law in Canada. It cannot therefore be deactivated.
When the engine is running and the vehicle is
stationary: if you move the selector lever from
a drive position to P, the daytime running
lamps/low-beam headlamps go out after
three minutes.
When the engine is running, the vehicle is
stationary and in bright ambient light: if you
turn the light switch to T, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light switch to L, the manual settings take
precedence over the daytime running lamps.
USA only:
The daytime running lamps improve the visi-
bility of your vehicle during the day. To do this,
the daytime running lamps function must be
switched on using the on-board computer
( Y page 231). If the engine is running and you turn the light
switch to T or L , the manual settings
take precedence over the daytime running
lamps.
Low-beam headlamps
GWARNING
When the light switch is set to Ã, the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to L .
Even if the light sensor does not detect that it is dark, the parking lamps and low-beam
headlamps switch on when the ignition is
switched on and the light switch is set to the L position. This is a particularly useful
function in the event of rain and fog. X To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
X Turn the light switch to L.
The green L indicator lamp in the instru-
ment cluster lights up.
Front fog lamps
In conditions where visibility is poor due to
fog, snow or rain, the fog lamps improve vis-
ibility as well as making it easier for other road
users to see you. They can be operated
together with the parking lamps or together
with the parking lamps and low-beam head-
lamps. X To switch on the front fog lamps: turn
the SmartKey in the ignition lock to position
2 or start the engine.
X Turn the light switch to L or à .
Exterior lighting117
Lights and windshield wipers
Z

XPress the N button.
The green N indicator lamp in the instru-
ment cluster lights up.
X To switch off the front fog lamps: press
the N button.
The green N indicator lamp in the instru-
ment cluster goes out.
Only vehicles with front fog lamps have the
fog lamps function.
Rear fog lamp
The rear fog lamp improves visibility of your
vehicle for the traffic behind in the event of
thick fog. Please take note of the country-
specific regulations for the use of rear fog
lamps. X To switch on the rear fog lamps: turn the
SmartKey in the ignition lock to position 2
or start the engine.
X Turn the light switch to L or à .
X Press the R button.
The yellow R indicator lamp in the
instrument cluster lights up.
X To switch off the rear fog lamp: press the
R button.
The yellow R indicator lamp in the
instrument cluster goes out.
Parking lamps
! If the battery has been excessively dis-
charged, the parking lamps or standing
lamps are automatically switched off to
enable the next engine start. Always park
your vehicle safely and sufficiently lit
according to legal standards. Avoid the
continuous use of the T parking lamps
for several hours. If possible, switch on theX right or the W left standing lamp.
X To switch on: turn the light switch to T.
The green indicator lamp in the instrument cluster lights up.
Standing lamps
Switching on the standing lamps ensures the corresponding side of the vehicle is illumina-
ted. X
To switch on the standing lamps: the
SmartKey is not in the ignition lock or it is in position 0.
X Turn the light switch to W (left-hand side
of the vehicle) or X (right-hand side of
the vehicle).
Combination switch
Turn signal
:High-beam headlamps
;Turn signal, right
=High-beam flasher
?Turn signal, left
X To indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ; or ?.
The corresponding turn signal flashes three
times.
X To indicate: press the combination switch
beyond the pressure point in the direction
of arrow ; or ?.
High-beam headlamps
X
To switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
X Turn the light switch to L or à .
X Press the combination switch beyond the
pressure point in the direction of arrow :.
In the à position, the high-beam head-
lamps are only switched on when it is dark
and the engine is running.
118Exterior lighting
Lights and windshield wipers

The K indicator lamp in the instrument
cluster lights up when the high-beam head-
lamps are switched on.
X To switch off the high-beam head-
lamps: move the combination switch back
to its normal position.
The K indicator lamp in the instrument
cluster goes out.
Vehicles with Adaptive Highbeam Assist:
when Adaptive Highbeam Assist is active, it
controls activation of the high-beam head-
lamps ( Y page 120).
High-beam flasher
X
To switch on: turn the SmartKey in the
ignition lock to position 1 or 2 or start the
engine.
X Pull the combination switch in the direction
of arrow =.
Hazard warning lamps
The hazard warning lamps automatically
switch on if:
R an air bag is deployed or
R the vehicle decelerates rapidly from a
speed of above 45 mph (70 km/h) and
comes to a standstill
X To switch on the hazard warning lamps:
press button :.
All turn signals flash. If you now switch on a turn signal using the combination switch, only the turn signal lamp on the corre-
sponding side of the vehicle will flash.
X To switch off the hazard warning lamps:
press button :.
The hazard warning lamps switch off auto-
matically if the vehicle reaches a speed of
above 6 mph (10 km/h) again after a full
brake application.
iThe hazard warning lamps still operate if
the ignition is switched off.
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is oper-
ated five times while the lights are on and the engine is running ( Y page 126). When you
switch off the ignition, the automatic head-
lamp cleaning system is reset and counting is resumed from 0.
Active light function
The active light function is a system that
moves the headlamps according to the steer-
ing movements of the front wheels. In this
way, relevant areas remain illuminated while
driving. This allows you to recognize pedes-
trians, cyclists and animals.
Active: when the lights are switched on.
Exterior lighting119
Lights and windshield wipers
Z

Cornering light function
The cornering light function improves the illu-
mination of the road over a wide angle in the direction you are turning, enabling better vis-
ibility in tight bends, for example. The corner- ing light function can only be activated when
the low-beam headlamps are switched on.
Active: R if you are driving at speeds below 25 mph
(40 km/h) and switch on the turn signal or
turn the steering wheel
R if you are driving at speeds between
25 mph (40 km/h) and 45 mph (70 km/h)
and turn the steering wheel
The cornering lamp may remain lit for a short
time, but is automatically switched off after
no more than three minutes.
Adaptive Highbeam Assist
General notes
You can use this function to set the head-
lamps to change between low beam and high beam automatically. The system recognizes
vehicles with their lights on, either approach-
ing from the opposite direction or traveling in front of your vehicle, and consequently
switches the headlamps from high beam to
low beam.
The system automatically adapts the low-
beam headlamp range depending on the dis-
tance to the other vehicle. Once the system
no longer detects any other vehicles, it reac-
tivates the high-beam headlamps. The system's optical sensor is located behind
the windshield near the overhead control
panel.
Important safety notes
GWARNING
Adaptive Highbeam Assist does not recognize road users:
R who have no lights, e.g. pedestrians
R who have poor lighting, e.g. cyclists
R whose lighting is blocked, e.g. by a barrier
In very rare cases, Adaptive Highbeam Assist
may fail to recognize other road users that
have lights, or may recognize them too late. In this or similar situations, the automatic high-
beam headlamps will not be deactivated or
activated regardless. There is a risk of an acci-
dent.
Always carefully observe the traffic conditions and switch off the high-beam headlamps in
good time.
Adaptive Highbeam Assist cannot take into
account road, weather or traffic conditions.
Adaptive Highbeam Assist is only an aid. You are responsible for adjusting the vehicle's
lighting to the prevailing light, visibility and
traffic conditions.
120Exterior lighting
Lights and windshield wipers

Rear-compartment overhead control panel :
p Switches the right-hand reading
lamp on/off
;p Switches the left-hand reading lamp
on/off
Interior lighting control
General notes
In order to prevent the vehicle's battery from discharging, the interior lighting functions are
automatically deactivated after some time
unless the SmartKey is in position 2 in the
ignition lock.
Automatic interior lighting control
X To activate/deactivate: press the |
button.
When the automatic interior lighting con-
trol is activated, the button is flush with the
overhead control panel.
The interior lighting automatically switches
on if you: R unlock the vehicle
R open a door
R remove the SmartKey from the ignition lock
The interior light is activated for a short while when the SmartKey is removed from the igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
( Y page 232).
Manual interior lighting control
X
To switch the front interior lighting on/
off: press the c button.
X To switch the rear interior lighting on/
off: press the u button.
X To switch the reading lamps on/off:
press the p button.
Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X Lock and then unlock the vehicle using the
SmartKey.
Replacing bulbs
Important safety notes
Xenon bulbs
GDANGER
Xenon bulbs carry a high voltage. You can get an electric shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Always have work on
the Xenon bulbs carried out at a qualified spe-
cialist workshop.
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
122Replacing bulbs
Lights and windshield wipers

Changing the front bulbs
Low-beam headlamps (halogen head-
lamps)
X Switch off the lights.
X Open the hood.
X Turn housing cover : counter-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.
High-beam headlamps, standing
lamps/parking lamps (halogen head-
lamps)
X Switch off the lights.
X Open the hood.
X Turn housing cover : counter-clockwise
and pull it out. X
Turn bulb counter-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.
Cornering light function (Bi-Xenon
headlamps)
X Switch off the lights.
X Open the hood.
X Turn housing cover : counter-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.
Turn signal
124Replacing bulbs
Lights and windshield wipers

XSwitch off the lights.
X Open the hood.
X Turn housing cover : counter-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 extension ;.
X
Re-insert lever extension ; downwards
(swelling) with guide rail =.
Changing the rear bulbs
Opening and closing the side trim pan-
els
You must open the side trim panel in the
cargo compartment before you can change
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 cargo compartment.
X Open the side trim panel ( Y page 125).
X
Pull out connector :.
X Turn fender nut ; 90° counter-clockwise
and pull out the bulb holder.
Replacing bulbs125
Lights and windshield wipers
Z

XBackup lamp :: remove the bulb from
bulb holder.
X Insert the new bulb into the bulb holder.
X Re-install bulb holder.
X Turn fender nut 90° clockwise.
X Insert the connector.
X Close the side trim panel ( Y page 125).
Windshield wipers
Switching the windshield wipers
on/off
!
Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield can
scratch the glass if wiping takes place when the windshield is dry.
If it is necessary to switch on the windshield wipers in dry weather conditions, always
use washer fluid when operating the wind-
shield wipers.
! If the windshield wipers leave smears on
the windshield after the vehicle has been
washed in an automatic car wash, wax or
other residues may be the reason for this.
Clean the windshield using washer fluid
after washing the vehicle in an automatic
car wash.
Combination switch 1
$ Windshield wiper off
2Ä Intermittent wipe, low (rain sensor
set to low sensitivity)
3Å Intermittent wipe, high (rain sensor
set to high sensitivity)
4° Continuous wipe, slow
5¯ Continuous wipe, fast
Bí Single wipe/ î Wipes the wind-
shield using washer fluid
X Switch on the ignition.
X Turn the combination switch to the corre-
sponding position.
! Vehicles with a rain sensor: if the wind-
shield becomes dirty in dry weather condi-
tions, the windshield wipers may be activa-
ted inadvertently. This could then damage
the windshield wiper blades or scratch the
windshield.
For this reason, you should always switch
off the windshield wipers in dry weather.
If the wiper blades are worn, the windshield
will no longer be wiped properly. This could
prevent you from observing the traffic condi-
tions.
126Windshield wipers
Lights and windshield wipers

Switching the rear window wiper on/
off
Combination switch :
è Switch
2ô Wipes with washer fluid
3I Switches on intermittent wiping
40 Switches off intermittent wiping
5ô Wipes with washer fluid
X Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y page 149).
X Turn switch : on the combination switch
to the corresponding position.
When the rear window wiper is switched on,
the icon appears in the instrument cluster.
Replacing the wiper blades
Important safety notes
GWARNING
If the windshield wipers begin to move while
you are changing the wiper blades, you could be trapped by the wiper arm. There is a risk of
injury.
Always switch off the windshield wipers and
ignition before changing the wiper blades.
! Never open the hood/tailgate if a wiper
arm has been folded away from the wind-
shield/rear window.
Never fold a windshield wiper arm without a
wiper blade back onto the windshield/rear window. Hold the windshield wiper arm firmly when
you change the wiper blade. If you release
the wiper arm without a wiper blade and it
falls onto the windshield/rear window, the
windshield/rear window may be damaged
by the force of the impact.
Mercedes-Benz recommends that you have the wiper blades changed at a qualified
specialist workshop.
! To avoid damaging the wiper blades,
make sure that you touch only the wiper
arm of the wiper.
Changing the windshield wiper blades
Removing the wiper blades
X Remove the SmartKey from the ignition
lock or turn it to position 0 (KEYLESS-GO)
( Y page 149).
X Fold the wiper arm away from the wind-
shield until it engages.
XFirmly press release knob : and pull the
wiper blade upwards from the wiper arm in the direction of the arrow.
Installing the wiper blades
X Position the new wiper blade in the retainer
on the wiper arm and slide it into place in
the opposite direction to the arrow.
The wiper blade audibly engages.
X Make sure that the wiper blade is seated
correctly.
X Fold the wiper arm back onto the wind-
shield.
Windshield wipers127
Lights and windshield wipers
Z