2019 MERCEDES-BENZ GLS SUV keyless

If activated in the multimedia system, the loca-
tor lighting also lights up in the dark (see the
Digital Operator's Manual).
X To open the tailgate automatically from
outside the vehicle:
press and hold the0054
button until the tailgate opens.
Vehicles with KEYLESS-GO: X To close the tailgate automatically from
outside the vehicle:
if the SmartKey is loca-
ted in the immediate vicinity of the vehicle,
press the 0054button on the SmartKey.
When the tailgate closes you can then release
the button. KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle (Y page 142).
Locking/unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the 0037 button on the SmartKey.
The driver's door and the door at which the han- dle is used, must both be closed. The SmartKey
must be outside the vehicle. When locking or
unlocking with KEYLESS-GO, the distance
between the SmartKey and the corresponding
door handle must not be greater than 3 ft (1 m).
KEYLESS-GO checks whether a valid SmartKey
is in the vehicle by periodically establishing a
radio connection between the vehicle and the
SmartKey. This happens:
R when starting the engine
R while driving
R when the external door handles are touched
R during convenience closing X
To unlock the vehicle: touch the inner sur-
face of the door handle.
X To lock the vehicle: touch sensor surface 0043
or 0044.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface 0044for an extended
period.
Further information on the convenience closing
feature (Y page 90).
If you pull on the handle of the tailgate, only the cargo compartment of the vehicle is unlocked.
Deactivating and activating If you do not intend to use a SmartKey for an
extended period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power, thereby conserving battery power. For the purposes of
activation/deactivation, the vehicle must not be
nearby.
X To deactivate: press the0037button on the
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
flashes twice briefly and lights up once, KEY-
LESS-GO is deactivated (Y page 80).
X To activate: press any button on the Smart-
Key.
or X Insert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features are available again. 78
SmartKeyOpening and closing

KEYLESS-GO start function
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart-
Key in the vehicle (Y page 142). Changing the settings of the locking
system
You can change the settings of the locking sys-
tem. This means that only the driver's door and
the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if you frequently travelalone.
X To change the setting: press and hold down
the 0036 and0037 buttons simultaneously
for about six seconds until the battery indica-
tor lamp flashes twice (Y page 80).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the 0037 or0036 button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock: press the0036button once.
X To unlock centrally: press the0036button
twice.
X To lock centrally: press the0037button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the inner
surface of the door handle on the driver's
door.
X To unlock centrally: touch the inner surface
of the door handle on the front-passenger
door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles
(Y page 78).
X To restore the factory settings: press and
hold down the 0036and0037 buttons simul-
taneously for approximately six seconds until
the battery check lamp flashes twice
(Y page 80). Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey or with KEYLESS-
GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
(Y page 75).
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked auto-
matically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 0043in the direction of the
arrow and at the same time remove mechan- ical key 0044from the SmartKey.
For further information about:
R Unlocking the driver's door (Y page 84)
R Unlocking the cargo compartment
(Y page 88)
R Locking the vehicle (Y page 84)
Inserting the mechanical key X
Push mechanical key 0044completely into the
SmartKey until it engages and release
catch 0043is back in its basic position. SmartKey
79Opening and closing Z

X
Repeatedly tap the SmartKey against your
palm until battery 0087falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contaminants. X
Insert the front tabs of battery compartment
cover 0043into the housing first and then press
to close it.
X Insert mechanical key 0044into the SmartKey
(Y page 79).
X Check the function of all SmartKey buttons on
the vehicle. Problems with the SmartKey
Problem
Possible causes/consequences and
0050 0050Solutions You can no longer lock or
unlock the vehicle using
the SmartKey. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 80) and replace it if necessary
(Y page 80).
If this does not work: X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key. There is interference from a powerful source of radio waves.
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key. The SmartKey is faulty.
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key.
X Have the SmartKey checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO was deactivated.
X Reactivate KEYLESS-GO (Y page 78). The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 80) and replace it if necessary
(Y page 80).
If this does not work: X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key. SmartKey
81Opening and closing Z

Problem
Possible causes/consequences and
0050
0050Solutions There is interference from a powerful source of radio waves.
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key. KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of the
SmartKey.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop. The engine cannot be
started using the Smart-
Key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 342).
or X Jump-start the vehicle (Y page 343).
or X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 80) and replace it if necessary
(Y page 80).
If this does not work: X Start your vehicle with the SmartKey in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock. You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 82
SmartKeyOpening and closing

Closing
X
Pull the tailgate down using recess 0043.
X Allow the tailgate to drop into the lock.
X Lock the vehicle if necessary with the 0037
button on the SmartKey or with KEYLESS-GO.
i If a KEYLESS-GO key is detected in the cargo
compartment, the tailgate will not lock. Opening/closing automatically from
the outside
Important safety notes G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the closing area during the closing process.
Use one of the following options to stop the
closing process:
R press the 0054button on the SmartKey.
R pull or press the remote operating switch
on the driver's door.
R press the closing or locking button on the
tailgate.
R pull the handle on the tailgate G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust gases can enter the vehicle interior if the tail-
gate is open while the engine is running, espe-cially if the vehicle is in motion. There is a risk of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
Two warning tones sound while the tailgate is
opening or closing.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 389).
i Notes on the automatic reversing feature for
the tailgate (Y page 85).
Opening the tailgate automatically You can open the tailgate automatically with the
SmartKey or the handle in the tailgate.
X Press and hold the 0054button on the Smart-
Key until the tailgate opens.
or X When the tailgate is unlocked, pull the tailgate
handle and let it go again immediately.
or
X With the tailgate stopped in an intermediate
position, pull the tailgate upwards.
You can release the tailgate as soon as the
tailgate starts to open.
Closing the tailgate automatically 86
Cargo compartmentOpening and closing

X
To close: press closing button 0043in the tail-
gate.
or X Vehicles with KEYLESS-GO or KEYLESS-GO
starting function: Press and hold the 0054
button on the SmartKey until the tailgate
closes.
You can release the button as soon as the
tailgate starts to close.
or X Pull the tailgate down slightly.
You can release the tailgate as soon as the
tailgate starts to close.
Vehicles with KEYLESS-GO or KEYLESS-GO
starting function: you can close and lock the
tailgate simultaneously.
X Press locking button 0044in the tailgate.
If a KEYLESS-GO key or KEYLESS-GO starting function key is detected outside the vehicle,
the tailgate closes and locks. All the doors
must be shut and the SmartKey located in the vicinity of the tailgate.
i The tailgate cannot be opened and closed
with the SmartKey if there is a SmartKey in the
ignition.
If the tailgate touches an object while closing, the closing procedure is interrupted and the
tailgate reopens.
If a KEYLESS-GO key or KEYLESS-GO starting
function key is detected in the cargo com-
partment, the tailgate will not lock. Opening/closing automatically from
inside
Important safety notes G
WARNING
Parts of the body could become trapped dur-
ing automatic closing of the tailgate. In addi-
tion, people may be standing in the closing
area or may enter the closing area, e.g. chil-
dren, during the closing procedure. There is a risk of injury.
Make sure that nobody is in the vicinity of theclosing area during the closing process.
Release the remote operating switch imme-
diately if somebody becomes trapped. To re- open the tailgate pull on the remote operating
switch. G
DANGER
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the tail- gate is open while the engine is running, espe-cially if the vehicle is in motion. There is a risk of poisoning.
Always switch off the engine before opening
the tailgate. Never drive with the tailgate
open.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
Two warning tones sound while the tailgate is
opening or closing.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 389).
i Notes on the automatic reversing feature for
the tailgate (Y page 85).
Opening and closing X
To open: pull remote operating switch 0043for
the tailgate until the tailgate opens.
X To close: turn the SmartKey to position 0047or
0048 in the ignition lock.
X Press remote operating switch for tailgate 0043
until the tailgate is completely closed.
You can open and close the tailgate from the
driver's seat when the vehicle is stationary and
unlocked. Cargo compartment
87Opening and closing Z

X
Turn the SmartKey to position 0047or0048 in the
ignition lock.
X To open fully: press switch0043and release it.
X To close fully: pull switch0043and release it.
X To stop the closing procedure: press
switch 0043again.
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 0036button 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 0036button again until the
panorama roof with power tilt/sliding panel is in the desired position.
X To interrupt convenience opening: release
the 0036 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 0037button to interrupt the clos-
ing procedure.
R Press and hold the 0036button to open. 90
Side windowsOpening and closing

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 side 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 89)
R The sliding sunroof (Y page 93)
R The panorama roof with power tilt/sliding
panel (Y page 93)
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 0037button 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 0037button again until the
roller sunblinds of the panorama roof with
power tilt/sliding panel close.
X To interrupt convenience closing: release
the 0037 button. Using KEYLESS-GO X
Touch recessed sensor surface 0043on 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 0043.
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 0043on 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 0043on 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 0047or0048 in the
ignition lock.
X Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed (Y page 89).
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 89).
X Hold the switch for an additional second.
X If the respective side window remains closed
after the button is released, then it has been Side windows
91Opening and closing Z