light MERCEDES-BENZ GLS SUV 2016 Repair Manual

If you are sitting in the third row of seats, fold the
right-hand outer seat forwards as follows in
order to be able to exit the vehicle.
The release loop for the EASY-ENTRY/EXIT fea-
ture is located at the bottom on the back of the right outer seat in the second row of seats.
X Pull on release loop :in the direction of the
arrow and hold in this position.
The backrest folds forwards.
X Pull on release loop :in the direction of the
arrow again and hold in this position.
X Lift up the seat until it folds forwards.
i Vehicles with memory function: the front
seats move forwards slightly. Exit position
i
Vehicles with memory function: call up the
programmed seat setting using the memory
buttons in order to return the front seats to
the saved position. Moving the outer seats back to the driving
position (second row of seats) G
WARNING
If the seat and seat backrest are not engaged they could fold forwards, e.g. when braking
suddenly or in the event of an accident.
R The seat or seat backrest which is not
engaged will then push the vehicle occu-
pant against the seat belt. The seat belt
cannot protect as intended and could result
in additional injury.
R A child restraint system will then no longer
be supported or positioned correctly and
will no longer perform its intended function.
R The seat backrest cannot restrain objects
or loads in the luggage compartment.
This poses an increased risk of injury.
Always ensure that the seat and the seat
backrest are engaged as described:
R before passengers travel on a seat with the
EASY-ENTRY/EXIT feature
R after adjusting the seat
R after the EASY-ENTRY/EXIT feature has
been used
R after you have folded the luggage compart-
ment enlargement forward G
WARNING
The seat does not engage in the entry/exit
position. The seat may fold back suddenly,
e.g. when accelerating, braking, in the event
of a sudden change of direction or an acci-
dent. Persons in the sweep of the seat could
be trapped. There is a risk of injury.
Always fold back a seat that has been folded
forward before pulling away. Make sure that
the seat and the seat backrest are engaged.
X To lock the seat: fold back the seat until it
engages.
X Fold back the backrest until it engages. 110
SeatsSeats, steering wheel and mirrors

Activating and deactivating seat venti-
lation The three blue indicator lamps in the buttons
indicate the ventilation level you have selected. X
Turn the key to position 1or 2in the ignition
lock (Y page 148).
X To switch on: press button:repeatedly
until the desired ventilation level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the vehicle battery voltage is too low, the
seat ventilation may switch off.
i You can open the side windows and the slid-
ing sunroof using the "Convenience opening" feature (Y page 95). The seat ventilation of
the driver's seat automatically switches to the
highest level.
Problems with the seat heating or seat ventilation Problem
Possible causes/consequences and
M
MSolutions The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation will switch back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. There is a risk of
injury. When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock. Adjusting the steering wheel man-
ually
G
WARNING
The steering wheel may move unexpectedly if you adjust it while driving. This could cause
you to lose control of the vehicle. There is a
risk of an accident.
Make sure that the steering wheel is locked
before driving off. Never unlock the steering
wheel when the vehicle is in motion. Steering wheel
113Seats, steering wheel and mirrors Z

:
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position (fore-
and-aft adjustment)
X Push release lever :down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired posi-
tion.
X Push release lever :up as far as it will go.
The steering column is locked.
X Check if the steering column is locked. When
doing so, try to push the steering wheel up or
down or try to move it in the fore-and-aft
direction. Adjusting the steering wheel electri-
cally :
To adjust the steering wheel height
; To adjust the steering wheel position (fore-
and-aft adjustment) The steering wheel can also be adjusted when
the key is removed from the ignition lock.
i Further related subjects:
R EASY-ENTRY/EXIT feature (Y page 115)
R Storing settings (Y page 118) Steering wheel heating
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 148).
X To switch on/off: turn the lever in the direc-
tion of arrow :or;.
Indicator lamp =lights up or goes out.
Vehicles with KEYLESS-GO: when you switch off the ignition and open the driver's door, the
steering wheel heating is switched off.
Vehicles without KEYLESS-GO: when you
remove the key from the ignition lock, the steer-
ing wheel heating is switched off. 114
Steering wheelSeats
, steering wheel and mirrors

Problems with the steering wheel heating
Problem
Possible causes/consequences and
M
MSolutions The steering wheel heat-
ing has switched itself
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting. EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
Move the steering wheel adjustment lever if
there is a risk of entrapment by the steering
wheel. The adjustment process is stopped.
Press one of the memory function position but-
tons. This function is only available on vehicles
with a memory function. G
WARNING
If children activate the EASY-ENTRY/EXIT fea- ture, they can become trapped, particularly
when unattended. There is a risk of injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children unattended in the vehicle. G
WARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose
control of the vehicle. There is a risk of an
accident.
Always wait until the adjustment process is
complete before driving off.
The EASY-ENTRY/EXIT feature makes getting in
and out of your vehicle easier. You can activate and deactivate the EASY-
ENTRY/EXIT feature in the on-board computer
(Y page 254).
Position of the steering wheel when the EASY-ENTRY/EXIT feature is active The steering wheel tilts upwards if you:
R remove the key from the ignition lock
R open the driver's door and KEYLESS-GO is in
position 1
R open the driver's door and the key is in posi-
tion 0or 1in the ignition lock
i The steering wheel only moves upwards if it
has not already reached the upper stop.
Position of the steering wheel for driv-
ing The steering wheel is moved to the previously
set position if:
R the driver's door is closed and
R you insert the key into the ignition lock
or
R you press the Start/Stop button once on vehi-
cles with KEYLESS-GO
If you close the driver's door with the key inser- ted in the ignition lock, the steering wheel is
automatically moved to the previously set posi-
tion.
The last position of the steering column is stored when you:
R switch the ignition off
R save the setting with the memory function
(Y page 118). Steering wheel
115Seats, steering wheel and mirrors Z

Crash-responsive EASY-EXIT feature
If the crash-responsive EASY-EXIT feature is trig-
gered in an accident, the steering column will
move upwards when the driver's door is opened.
This occurs irrespective of the position of the
key in the ignition lock. This makes it easier to
exit the vehicle and rescue the occupants.
The crash-responsive EASY-EXIT feature is only
operational if the EASY-EXIT/ENTRY feature is
activated in the on-board computer
(Y page 254). Mirrors
Rear-view mirror
X
Anti-dazzle mode: pivot anti-dazzle
switch :forwards or back. Exterior mirrors
Adjusting the exterior mirrors G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine. G
WARNING
The exterior mirrors reduce the size of the
image. Objects visible in the mirrors are
closer than they appear. You could misjudge
the distance from road users driving behind
you when changing lanes, for instance. There is a risk of an accident.
You should therefore always look over your
shoulder to determine the actual distance
from road users driving behind you. X
Turn the key to position 1or 2in the ignition
lock (Y page 148).
X Exterior mirror on the driver's side: press but-
ton :.
Exterior mirror on the front-passenger side:
press button ;.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some
time. You can adjust the selected exterior
mirror using button =as long as the indicator
lamp is lit.
X Press button =up, down, or to the right or
left until you have adjusted the exterior mirror to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field
of vision.
The exterior mirrors are automatically heated if
the rear window heating is switched on and the
outside temperature is low. 116
MirrorsSeats, steering wheel and
mirrors

The rear-view mirror and the exterior mirror on
the driver's side automatically go into anti-daz-
zle mode if the following conditions are met
simultaneously:
R the ignition is switched on and
R incident light from headlamps strikes the sen-
sor in the rear-view mirror
The mirrors do not dip if reverse gear is engaged or if the interior lighting is switched on. Parking position of the exterior mirror
on the front-passenger side
Setting and storing the parking position You can set the front-passenger side exterior
mirror so that you can see the rear wheel on that side as soon as you engage reverse gear. You
can store this position.
Using reverse gear :
Button for the exterior mirror on the driver's
side
; Button for the exterior mirror on the front-
passenger side
= Adjustment button
? Memory button M
X Bring the vehicle to a standstill.
X Turn the key to position 2in the ignition lock
(Y page 148).
X Press button ;.
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the default parking position.
X Use button =to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the kerb.
The parking position is stored. i
If you shift the transmission to another posi-
tion, the exterior mirror on the front-
passenger side returns to the driving position.
Using the memory button You can store the parking position of the exte-
rior mirror on the front-passenger side using
memory button
M?. The reverse gear must not
be engaged during the process.
X Turn the key to position 2in the ignition lock
(Y page 148).
X Press button ;.
X Use button =to adjust the exterior mirror to
a position that allows you to see the rear
wheel and the kerb.
X Press memory button M? and one of the
arrows on button =within three seconds.
The parking position is stored if the exterior
mirror does not move.
X If the mirror moves out of position, repeat the
steps.
Calling up a stored parking position X
Turn the key to position 2in the ignition lock
(Y page 148).
X Adjust the exterior mirror on the front-
passenger side using button ;.
X Engage reverse gear.
The exterior mirror on the front-passenger
side moves to the stored parking position.
The exterior mirror on the front-passenger side
moves back to its original position: R as soon as you exceed a speed of 15 km/h
R if you press button :for the exterior mirror
on the driver's side Memory function
Storing settings
G
WARNING
If you use the memory function on the driver's side while driving, the adjustments could
cause you to lose control of the vehicle. There
is a risk of an accident.
Only use the memory function on the driver's
side while the vehicle is stationary. 118
Memory functionSeats, steering wheel and mirrors

Exterior lighting
General notes
For reasons of safety, Mercedes-Benz recom-
mends that you drive with the lights switched on even during the daytime. In some countries,
operation of the headlamps varies due to legal
requirements and self-imposed obligations. Driving abroad
General notes If your journey takes you to countries where
vehicles are driven on the opposite side of the
road to the country in which the vehicle is reg-
istered, your headlamps must be switched to
symmetrical dipped beam as soon as possible
after crossing the border. This prevents oncom-
ing traffic from being dazzled. Symmetrical
lights do not illuminate as large an area of the
edge of the carriageway.
Vehicles with halogen headlamps X
Turn cap :anti-clockwise and remove it.
X Push switchover lever ;down.
X Replace cap :and turn it clockwise.
Convert the headlamps back to asymmetrical
dipped beam as soon as possible after returning across the border.
Vehicles with Intelligent Light System X
Before crossing the border, set the head-
lamps to symmetrical dipped beam and after
returning back to asymmetrical dipped beam via the "Dipped-beam headlamps for driving
on the right/left" function in the on-board
computer (Y page 252). If the headlamps are converted to symmetrical
dipped beam, the "motorway mode" and "exten-
ded range foglamps" functions are not available. Setting the exterior lighting
Setting options Exterior lighting can be set using:
R the light switch
R headlamp range control (vehicles with halo-
gen headlamps only) (Y page 122)
R the combination switch (Y page 122)
R the on-board computer (Y page 252)
Light switch Operation
1
W
Left-hand parking lamps
2 X
Right-hand parking lamps
3 T
Side lamps, licence plate and instru-
ment cluster lighting
4 c
Automatic headlamps, controlled by
the light sensor
5 L
Dipped-beam/main-beam headlamps
B R
Rear foglamp
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
X Turn the light switch to c.
The exterior lighting (except the side lamps/
parking lamps) switches off automatically if you: R remove the key from the ignition lock
R open the driver's door with the key in posi-
tion 0in the ignition lock 120
Exterior lightingLights and windscreen wipers

Automatic headlamps
c is the preferred light switch position. The
light setting is automatically selected according to the brightness of the ambient light (excep-
tion: poor visibility due to weather conditions
such as fog, snow or spray):
R key in position 1in the ignition lock: the side
lamps are switched on or off automatically
depending on the brightness of the ambient
light
R with the engine running: depending on the
ambient light conditions, the daytime driving
lights or the side lamps and dipped-beam
headlamps are switched on or off automati-
cally
X To switch on automatic headlamp mode:
turn the light switch to c. G
WARNING
When the light switch is set to Ã, the
dipped-beam headlamps may not be switched on automatically if there is fog, snow or othercauses 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.
The automatic headlamp feature is only an aid.
You are responsible for the vehicle lighting at all times.
The daytime driving lights improve the visibility
of your vehicle during the day.
When the side lamps and dipped-beam head-
lamps are switched on, the green T(side
lamps) and L(dipped-beam headlamps)
indicator lamps in the instrument cluster light
up.
Dipped-beam headlamps
When the ignition is switched on and the light
switch is in the Lposition, the side lamps
and dipped-beam headlamps are switched on
even if the light sensor does not sense dark
ambient light conditions. This is particularly
advantageous when there is fog or rain. X
To switch on the dipped-beam headlamps:
turn the key in the ignition lock to position 2
or start the engine.
X Turn the light switch to L.
The green Lindicator lamp on the instru-
ment cluster lights up.
Rear foglamp
The rear foglamp improves the visibility of your
vehicle in heavy fog for the following traffic.
Please observe the country-specific laws on the
use of rear foglamps.
X To switch on the rear foglamp: turn the key
in the ignition lock to position 2or start the
engine.
X Turn the light switch to Lorc .
X Press the Rbutton.
The yellow Rindicator lamp in the instru-
ment cluster lights up.
X To switch off the rear foglamp: press the
R button.
The yellow Rindicator lamp in the instru-
ment cluster goes out.
Side lamps ! When the battery is discharged heavily, the
side lamps or parking lamps are automatically
switched off to facilitate an engine start.
Always park your vehicle safely and in a well lit area, in accordance with the relevant legal
stipulations. Avoid using the Tside lamps
for periods lasting several hours. Where pos-
sible, switch on the right Xor left W
parking lamp.
X To switch on: turn the light switch to T.
The green Tindicator lamp in the instru-
ment cluster lights up.
Parking lamps Switching on the parking lamps ensures that the
corresponding side of the vehicle is illuminated.
X To switch on the parking lamps: the key
should not be in the ignition lock or it should
be in position 0.
X Turn the light switch to W(left-hand side of
the vehicle) or X(right-hand side of the
vehicle). Exterior lighting
121Lights and windscreen wipers Z

Adjusting the headlamp range (halogen
headlamps) g
Driver's seat and front-passenger seat
occupied
1 Driver's seat, front-passenger seat and rear
seats occupied
2 Driver's seat, front-passenger seat and rear
seats occupied and maximum permissible
rear axle load utilised when the vehicle is
laden
3 Driver's seat occupied and maximum per-
missible rear axle load utilised when the
vehicle is laden
The headlamp range controller allows you to
adjust the cone of light from the headlamps to
suit the vehicle load.
X Start the engine.
X Turn the headlamp range control to the posi-
tion which corresponds to the load in your
vehicle. Combination switch
:
Main-beam headlamps
; Turn signal, right
= Headlamp 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?.
X To switch on the main-beam headlamps:
turn the light switch to LorÃ.
X Press the combination switch beyond the
pressure point in the direction of arrow :.
In the Ãposition, the main-beam head-
lamps are only switched on when it is dark and the engine is running.
The blue Kindicator lamp in the instru-
ment cluster lights up when the main-beam
headlamps are switched on.
X To switch off the main-beam headlamps:
move the combination switch back to its nor-
mal position.
The blue Kindicator lamp in the instru-
ment cluster goes out.
Vehicles with Adaptive Highbeam Assist
Plus: if Adaptive Highbeam Assist Plus is acti-
vated, it automatically controls activation and
deactivation of the main-beam headlamps
(Y page 124). Hazard warning lamps
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 corresponding
side of the vehicle will flash.
X To switch off the hazard warning lamps:
press button
:.122
Exterior lightingLights and windscreen wipers

The hazard warning lamps switch on automati-
cally if:
R an airbag is deployed or
R the vehicle decelerates rapidly from a speed
of above 70 km/h and comes to a standstill
The hazard warning lamps switch off automati-
cally if the vehicle reaches a speed of above
10 km/h again after a full brake application.
i The hazard warning lamps continue to oper-
ate even if the ignition is switched off. Intelligent Light System
General notes The Intelligent Light System is a system that
adjusts the headlamps automatically to suit the
prevailing driving and weather conditions. It
offers advanced functions for improved illumi-
nation of the road surface, e.g. depending on the vehicle speed or weather conditions. The sys-
tem includes the active light function, corneringlight function, motorway mode and extended
range foglamps. The system is only active when it is dark.
You can activate or deactivate the "Intelligent
Light System" function using the on-board com-
puter (Y page 252).
Active light function The active light function is a system that moves
the headlamps according to the steering move-
ments of the front wheels. In this way, relevant
areas remain illuminated while you are driving.
This allows you to recognise pedestrians,
cyclists and animals.
Active: when the lights are switched on.
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 visi-
bility in tight bends, for example. It can be acti-
vated only when the dipped-beam headlamps
are switched on. Active:
R if you are driving at speeds below 40 km/h
and switch on the turn signal or turn the steer-
ing wheel
R if you are driving at speeds between 40 km/h
and 70 km/h and turn the steering wheel
The cornering light function may remain lit for a
short time, but is automatically switched off
after no more than three minutes.
Motorway mode Motorway mode increases the range of the
beam.
Active:if you are driving at a speed above
110 km/h and do not make any large steering
movements for at least 1,000 m or if you are
driving at a speed above 130 km/h.
Not active: if you are driving at speeds below
80 km/h following activation.
Extended range fog lamps The extended-range foglamps reduce the glare
experienced by the driver and improve the illu-
mination of the edge of the carriageway.
Active: if you are driving at speeds below
70 km/h and you switch on the rear foglamp.
Not active: if, following activation, you are driv-
ing at speeds above 100 km/h or if you switch
off the rear foglamp.
Off-road lights The off-road lights facilitate the early recogni-
tion of objects/obstacles when driving off-road
thanks to a symmetrical, wider and brighter dis-
tribution of light from the dipped-beam head-
lamps.
Active: when driving at speeds no faster than
50 km/h and the off-road program selector
wheel is in position 1 or 2.
Not active: when driving at speeds above
50 km/h.
When the off-road lights are switched on, the
cornering light function is permanently activa-
ted, the active light function is deactivated and
the headlamp range control is set to static
mode. Exterior lighting
123Lights and windscreen wipers Z