key MERCEDES-BENZ GLS 2017 Owner's Guide

Limiting the opening angle of the tail-
gate
General notes
! Make sure there is sufficient clearance to
open the tailgate fully when setting the open-
ing angle. The tailgate could otherwise be
damaged. Ideally, set the opening angle out-
side.
Activating You can limit the opening angle of the tailgate.
This is possible in the top half of its opening
range, up to approximately 4 in (10 cm) before
the stop. X
To open the tailgate: pull the handle on the
tailgate. X
To stop the opening procedure at the
desired position: press the closing button in
the tailgate or pull the handle on the outside
of the tailgate again. X
To save the position: press and hold the
closing button in the tailgate until two short
tones sound.
The opening angle limiter is activated. The
tailgate will now stop in the stored position
when opening.
Deactivating X
Press and hold the closing button in the tail-
gate until you hear a short tone.
Tailgate emergency release
General notes
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
( Y
page 384).
If the tailgate can no longer be unlocked: R
using the SmartKey, or R
using the remote operating switch in the door
control panel:
Use the emergency release. Opening X
Take mechanical key D out of the SmartKey
( Y
page 76). X
Insert mechanical key D or a suitable tool,
e.g. a thin screwdriver, into opening C in the
paneling and push it in.
The tailgate is released. X
Open the tailgate. X
Insert mechanical key D into the SmartKey
( Y
page 76).
Side windows
Important safety notes
G WARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or
pull the switch to close the side window again.
G WARNING
While closing the side windows, body parts in
the closing area could become trapped. There
is a risk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press
the switch to open the side window again. Side windows 85
Opening and closing Z

G WARNING
If children operate the side windows they
could become trapped, particularly if they are
left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle.
Side window reversing feature The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window during the closing
process, the side window opens again automat-
ically. However, the automatic reversing feature
is only an aid and does not relieve you of the
responsibility of paying attention when closing a
side window.
G WARNING
The reversing feature does not react: R
to soft, light and thin objects, e.g. small fin-
gers R
over the last 1/6 in(4 mm) of the closing
movement R
during resetting R
when closing the side window again man-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Opening and closing the side win-
dows
The switches for all side windows are located on
the driver's door. There is also a switch on each
door for the corresponding side window.
The switches on the driver's door take prece-
dence. C
Front left D
Front right

X
Turn the SmartKey to position 1 or 2 in the
ignition lock. X
To open fully: press switch C and release it.X
To close fully: pull switch C and release it.X
To stop the closing procedure: press
switch C again.
If the hinged side windows become blocked dur-
ing closing, the closing procedure is stopped.
The hinged side windows then open again fully.
Convenience opening
General notes Vehicles with KEYLESS-GO or KEYLESS-GO
start function: you can ventilate the vehicle
before you start driving.
To do this, the SmartKey is used to carry out the
following functions simultaneously: R
unlock the vehicle R
open the side windows R
open the hinged side windows R
open the sliding sunroof or the panorama roof
with power tilt/sliding panel and the roller
sunblinds R
switch on the seat ventilation for the driver's
seat
The convenience opening feature can only be
operated using the SmartKey. The SmartKey
must be close to the vehicle. For vehicles with-
out KEYLESS-GO, the SmartKey must be near
the driver's door handle.
The "convenience opening" feature is also avail-
able when the vehicle is unlocked. Convenience opening X
Vehicles without KEYLESS-GO: point the tip
of the SmartKey at the door handle on the
driver's door. X
Press and hold the 6 button until the side
windows and the sliding sunroof or panorama
roof with power tilt/sliding panel are in the
desired position.
If the roller sunblinds of the panorama roof
with power tilt/sliding panel are closed, the
roller sunblinds are opened first. X
Press and hold the 6 button again until the
panorama roof with power tilt/sliding panel is
in the desired position. X
To interrupt convenience opening: release
the 6 button.
Convenience closing feature
Important safety notes
G WARNING
When the convenience closing feature is oper-
ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
When you lock the vehicle, you can simultane-
ously: R
close the side windows R
close the hinged side windows R
close the sliding sunroof or the panorama roof
with power tilt/sliding panel
On vehicles with a panorama roof with power
tilt/sliding panel, you can then close the roller
sunblinds.
Proceed as follows if someone is trapped: R
Release the 7 button to interrupt the clos-
ing procedure. R
Press and hold the 6 button to open.Side windows 87
Opening and closing Z

Vehicles with KEYLESS-GO: R
Release the sensor surfaces on the exterior
door handle to interrupt the closing proce-
dure. R
To open, pull the same door handle immedi-
ately and hold it firmly. The door windows and
the sliding sunroof will open for as long as the
door handle is held but the door is not
opened.
Notes on the automatic reversing feature for: R
the side window ( Y
page 86)R
the sliding sunroof ( Y
page 90)R
the panorama roof with power tilt/sliding
panel ( Y
page 90)
Using the SmartKey The SmartKey must be close to the vehicle. For
vehicles without KEYLESS-GO, the SmartKey
must be near the driver's door handle. X
Vehicles without KEYLESS-GO: point the tip
of the SmartKey at the door handle on the
driver's door. X
Press and hold the 7 button until the side
windows and the sliding sunroof or the pano-
rama roof with power tilt/sliding panel are
fully closed. X
Make sure that all the side windows and the
sliding sunroof or panorama roof with power
tilt/sliding panel are closed.
On vehicles with a panorama roof with power
tilt/sliding panel: X
Press and hold the 7 button again until the
roller sunblinds of the panorama roof with
power tilt/sliding panel close. X
To interrupt convenience closing: release
the 7 button. Using KEYLESS-GO X
Touch recessed sensor surface C on the
door handle until the side windows and the
sliding sunroof or the panorama roof with
power tilt/sliding panel are fully closed.
i Make sure you only touch recessed sensor
surface C . X
Make sure that all the side windows and the
sliding sunroof or panorama roof with power
tilt/sliding panel are closed. X
Vehicles with a panorama roof with
power tilt/sliding panel: touch recessed
sensor surface C on the door handle again
until the roller sunblinds of the panorama roof
with power tilt/sliding panel close. X
To interrupt convenience closing: release
recessed sensor surface C on the door han-
dle.
Resetting the side windows If a side window can no longer be closed fully,
you must reset it. X
Close all the doors. X
Turn the SmartKey to position 1 or 2 in the
ignition lock. X
Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed ( Y
page 86).X
Hold the switch for an additional second.
If the side window opens again slightly: X
Immediately pull the corresponding switch on
the door control panel until the side window is
completely closed ( Y
page 86).X
Hold the switch for an additional second. X
If the respective side window remains closed
after the button is released, then it has been88
Side windows
Opening and closing

G WARNING
If children operate the sliding sunroof they
could become trapped, particularly if they are
left unsupervised. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Only open the sliding sunroof if it is free of
snow and ice. Otherwise, malfunctions may
occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could be
damaged.
! The weather can change abruptly. It could
start to rain or snow. Make sure that the slid-
ing sunroof is closed when you leave the vehi-
cle. The vehicle electronics can be damaged if
water enters the vehicle interior.
Resonance noises can occur in addition to the
usual airflow noises when the sliding sunroof is
open. They are caused by minor pressure fluc-
tuations in the vehicle interior. Change the posi-
tion of the sliding sunroof or open a side win-
dow. The noise will be reduced or eliminated.
Sliding sunroof reversing feature Your vehicle may be equipped with a sliding
sunroof or a panorama roof with power tilt/slid-
ing panel. In the following section, the term
"sliding sunroof" refers to both sliding sunroof
variants.
The sliding sunroof is equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts the sliding sunroof during the closing
process, the sliding sunroof opens again auto-
matically. However, the automatic reversing
feature is only an aid and does not relieve you of
the responsibility of paying attention when clos-
ing the sliding sunroof.
G WARNING
The reversing feature does not react: R
to soft, light and thin objects, e.g. small fin-
gers R
over the last 1/6 in (4 mm) of the closing
movement R
during resetting R
when closing the sliding sunroof again man-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped: R
release the switch immediately, or R
press the switch in any direction during the
automatic closing process
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
C
To raise D
To open

close the sun protection cover manually when
the sliding sunroof is raised or closed.
You can continue to operate the sliding sunroof
after switching off the engine or removing the
SmartKey from the ignition lock. This function is
available for up to five minutes or until the driv-
er's or front-passenger door is opened.
Resetting
! If the sliding sunroof still cannot be opened
or closed fully after resetting, contact a quali-
fied specialist workshop.
Reset the sliding sunroof if it does not move
smoothly. X
Turn the SmartKey to position 1 or 2 in the
ignition lock. X
Raise the sliding sunroof fully at the rear
( Y
page 90). X
Keep the V switch pressed for another
second. X
Make sure that the sliding sunroof can be fully
opened and closed again ( Y
page 90).X
If this is not the case, repeat the steps above.
Operating the panorama roof with
power tilt/sliding panel
Opening and closing
C
To raise
D
To open

Removing and installing the rear seat
head restraints X
To remove: pull the head restraint up to the
stop. X
Press release catch C and pull the head
restraint out of the guides. X
To re-install: insert the head restraint so that
the notches on the bar are on the left when
viewed in the direction of travel. X
Push the head restraint down until you hear it
engage in position.
Rear seats (second and third row of
seats)
Important safety notes
G WARNING
If the seat and backrest are not engaged, they
can fold forwards, e.g. in the event of sudden
braking or an accident. R
This will cause the vehicle occupants to be
forced into the seat belt by a seat or back-
rest which is not engaged. The seat belt can
no longer offer the intended level of pro-
tection and could even cause injuries. R
A child restraint system would no longer be
anchored or positioned correctly and would
not be able to perform its required function. R
The seat backrests cannot restrain objects
or loads in the cargo compartment.
There is an increased risk of injury.
Always make sure that the seat and backrest
are engaged as described: R
before traveling with a passenger on a seat
with the EASY-ENTRY/EXIT feature R
after you have adjusted the seat R
after the EASY-ENTRY/EXIT feature has
been used R
after the cargo compartment enlargement
has been folded forwards
G WARNING
The seat does not engage in the entry/exit
position. The seat could fold back suddenly, e.g. when accelerating, braking, changing
direction suddenly or in the event of an acci-
dent. Persons in the sweep of the seat could
become trapped. There is a risk of injury.
Always fold back a seat which has been folded
forwards before you pull away. Make sure that
the seat and backrest engage fully.
G WARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
G WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Adjusting the backrest angle (second
row of seats)
You can adjust the angle of the backrests in the
second row of seats. There are ten detent posi-
tions to choose from. X
Pull the left or right release lever D upwards
in the direction of the arrow until relevant
backrest C is fully released. X
Pull backrest C forwards in the direction of
the arrow and allow it to engage. X
To ensure that the backrest has engaged, lean
firmly against backrest C .98
Seats
Seats, steering wheel and mirrors

Driver's and front-passenger seat
Rear seats
The three red indicator lamps in the button indi-
cate the heating level you have selected.
The system automatically switches down from
level 3 to level 2 after approximately eight
minutes.
The system automatically switches down from
level 2 to level 1 after approximately ten
minutes.
The system automatically switches off approx-
imately 35 minutes after it is set to level 1 .X
Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y
page 138).X
To switch on: press button C repeatedly
until the desired heating level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out. i If the battery voltage is too low, the seat
heating may switch off.
Activating and deactivating seat venti-
lation
The three blue indicator lamps in the buttons
indicate the ventilation level you have selected. X
Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y
page 138). X
To switch on: press button C repeatedly
until the desired ventilation level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the 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 87). The seat ventilation of
the driver's seat automatically switches to the
highest level.104
Seats
Seats, steering wheel an d mirrors

Problems with the seat heating or seat ventilation Problem
Possible causes/consequences and P Solutions
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 defroster 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 your vehicle if you do
the following while driving: R
adjust the driver's seat, head restraint,
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 mirror and fasten your seat belt
before starting the engine.
G WARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
G WARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
C
Release lever D
Adjusts the steering wheel height

Adjusting the steering wheel elect ri -
cally
C
Adjusts th e steering whee l heightD
Adjusts th e steering whee l position (fore-
and-af t adjustment)
The steering whee l can also be adjusted when
th e SmartKey is remove d from th e ignition lock.
i Further relate d subjects :R
EASY-ENTRY/EXIT feature ( Y
page 106)R
Storing setting s ( Y
page 110) Steering wheel heating
Switching on/off X
Turn th e SmartKey to position 2 in th e ignition
loc k ( Y
page 138). X
To switch on/off: tur n th e lever in th e direc -
tion of arrow C or D .
Indicato r lamp