2018 MERCEDES-BENZ GLS SUV ignition

ProblemPossible causes/consequences andMSolutions
There is interference from a powerful source of radio waves.
XUnlock (Ypage 84) or lock (Ypage 84) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave 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:
XUnlock (Ypage 84) or lock (Ypage 84) the vehicle using the
mechanical key.
XHave 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.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 346).
or
XJump-start the vehicle (Ypage 346).
or
XConsult 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.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 80) and replace it if necessary
(Ypage 80).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
82SmartKey
Opening and closing

Automa tic locking featu re
XTo deactivate:press and hold butto n: for
about fiv eseconds until atone sounds.
XTo activate: press and hold butto n; for
about fiv eseconds until atone sounds.
If you press on eof th etwo buttons and do no t
hear atone ,th erelevan tsetting has already
been selected.
The vehicl eis locke dautomatically when th e
ignition is switched on and th ewheels are turn-
ing .
You could therefor ebe locke dout if:
Rth evehicl eis bein gpushed.
Rth evehicl eis bein gtowed.
Rth evehicl eis on aroller dynamometer.
You can also switch th eautomatic locking func-
tion on and off usin gth eon-board computer
(
Ypage 244).
Power closing
Powe rclosin gpulls th edoor sand tailgat eint o
their locks automatically eve nif they are no t
completely closed.
XTo power close adoor :push th edoor int o
th eloc kup to th efirst deten tposition .
Powe rclosin gwill pull th edoor fully closed.
XTo power close th etailgate: lightlypress
th etailgat edownwards.
Powe rclosin gwill pull th etailgat efully
closed.
Unlocking/locking the driver's door
using the mechanical key
i
If you want to centrally loc kth evehicl eusin g
th emechanical key, begi nby pressing th e
locking butto nfor th einterior locking mech-
anism while th edriver's door is open .The n
proceed to loc kth edriver's door usin gth e
mechanical key.
XInser tth emechanical ke yint oth eloc kof th e
driver's door as far as it will go.
XTo unlock: turnth emechanical ke ycounter-
clockwise to position 1.
XTo lock:turnth emechanical ke yclockwise as
far as it will go to position 1.
If you use th emechanical ke yto unloc kand
open th edriver's door ,th eanti-thef talarm sys-
te m will be triggered .Switc hoff th ealarm
(
Ypage 75).
If you loc kth evehicl eas described above, th e
fuel filler flap is no tlocked. The anti-thef talarm
system is no tarmed.
Cargo compa rtment
Import ant safety notes
GWARNIN G
Combustion engines emi tpoisonous exhaust
gase ssuc has carbon monoxide. If th etailgat e
is open when th eengin eis running, particu-
larly if th evehicl eis moving ,exhaust fumes
could ente rth epassenger compartment.
There is aris kof poisoning .
Turn off th eengin ebefore opening th etail-
gate. Never drive wit hth etailgat eopen .
84Cargo compartment
Opening and closing

XTo close:press closing button :in the tail-
gate.
or
XVehicles with KEYLESS-GO or KEYLESS-GO
starting function: press and hold the F
button on the SmartKey until the tailgate
closes.
You can release the button as soon as the
tailgate starts to close.
or
XPull 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.
XPress locking button ;in the tailgate.
If a KEYLESS-GO 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.
iThe 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 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
GWARNING
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 the
closing 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.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. 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
(
Ypage 392).
iNotes on the automatic reversing feature for
the tailgate (Ypage 85).
Opening and closing
XTo open: pull remote operating switch :for
the tailgate until the tailgate opens.
XTo close: turn the SmartKey to position 1or
2 in the ignition lock.
XPress remote operating switch for tailgate :
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 compartment87
Opening and closing
Z

GWARNING
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.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/6 in(4 mm) of the closing
movement
Rduring resetting
Rwhen 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.
:Front left
;Front right
=Rear right
?Rear left
XTurn the SmartKey to position 1or2 in the
ignition lock.
XTo open manually: press and hold the cor-
responding switch.
XTo open fully: press the switch beyond the
pressure point and release it.
Automatic operation is started.
XTo close manually: pull the corresponding
switch and hold it.
XTo close fully: pull the switch beyond the
pressure point and release it.
Automatic operation is started.
XTo interrupt automatic operation: press/
pull the corresponding switch again.
If you press the switch beyond the pressure
point and release, automatic operation is star-
ted in the corresponding direction. You can stop
automatic operation by pressing/pulling the
switch again.
You can continue to operate the side windows
after you switch off the engine or remove the
SmartKey. This function is available for up to five
minutes or until the driver's or front-passenger
door is opened.
The side windows cannot be operated from the
rear when the override feature for the side win- dows is activated (
Ypage 65).
Opening and closing the hinged side
windows
The hinged side windows are operated electri-
cally from the from the driver's seat.
Side windows89
Opening and closing
Z

XTurn the SmartKey to position1or2 in the
ignition lock.
XTo open fully: press switch:and release it.
XTo close fully: pull switch:and release it.
XTo stop the closing procedure: press
switch :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:
Runlock the vehicle
Ropen the side windows
Ropen the hinged side windows
Ropen the sliding sunroof or the panorama roof with power tilt/sliding panel and the roller
sunblinds
Rswitch 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
XVehicles without KEYLESS-GO: point the tip
of the SmartKey at the door handle on the
driver's door.
XPress and hold the %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.
XPress and hold the %button again until the
panorama roof with power tilt/sliding panel is
in the desired position.
XTo interrupt convenience opening: release
the % button.
Convenience closing feature
Important safety notes
GWARNING
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:
Rclose the side windows
Rclose the hinged side windows
Rclose 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:
RRelease the &button to interrupt the clos-
ing procedure.
RPress and hold the %button to open.
90Side windows
Opening and closing

Vehicles with KEYLESS-GO:
RRelease the sensor surfaces on the exterior
door handle to interrupt the closing proce-
dure.
RTo 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:
Rthe side window (Ypage 89)
Rthe sliding sunroof (Ypage 93)
Rthe panorama roof with power tilt/sliding
panel (Ypage 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.
XVehicles without KEYLESS-GO: point the tip
of the SmartKey at the door handle on the
driver's door.
XPress and hold the &button until the side
windows and the sliding sunroof or the pano-
rama roof with power tilt/sliding panel are
fully closed.
XMake 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:
XPress and hold the &button again until the
roller sunblinds of the panorama roof with
power tilt/sliding panel close.
XTo interrupt convenience closing: release
the & button.
Using KEYLESS-GO
XTouch recessed sensor surface :on the
door handle until the side windows and the
sliding sunroof or the panorama roof with
power tilt/sliding panel are fully closed.
iMake sure you only touch recessed sensor
surface :.
XMake sure that all the side windows and the
sliding sunroof or panorama roof with power
tilt/sliding panel are closed.
XVehicles with a panorama roof with
power tilt/sliding panel: touch recessed
sensor surface :on the door handle again
until the roller sunblinds of the panorama roof
with power tilt/sliding panel close.
XTo interrupt convenience closing: release
recessed sensor surface :on the door han-
dle.
Resetting the side windows
If a side window can no longer be closed fully,
you must reset it.
XClose all the doors.
XTurn the SmartKey to position 1or2 in the
ignition lock.
XPull the corresponding switch on the door
control panel until the side window is com-
pletely closed (
Ypage 89).
XHold the switch for an additional second.
If the side window opens again slightly:
XImmediately pull the corresponding switch on
the door control panel until the side window is
completely closed (
Ypage 89).
XHold the switch for an additional second.
XIf the respective side window remains closed
after the button is released, then it has been
Side windows91
Opening and closing
Z

If somebody becomes trapped:
Rrelease the switch immediately, or
Rduring automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be stop-
ped.
GWARNING
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.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/6 in (4 mm) of the closing
movement
Rduring resetting
Rwhen 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:
Rrelease the switch immediately, or
Rpress the switch in any direction during the
automatic closing process
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
:To raise
;To open
=To close/lower
XTurn the SmartKey to position 1or2 in the
ignition lock.
XPress or pull the 2switch in the corre-
sponding direction.
If you press the 2switch beyond the pres-
sure point, an automatic opening/closing proc-
ess is started in the corresponding direction.
Sliding sunroof93
Opening and closing
Z

You can stop automatic operation by pressing/
pulling the switch again.
When opening and raising the roof, automatic
operation is only available if the sliding sunroof
is in the closed position.
The sun protection cover automatically opens
along with the sliding sunroof. You can open or
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 isavailable 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.
XTurn the SmartKey to position 1or2 in the
ignition lock.
XRaise the sliding sunroof fully at the rear
(Ypage 93).
XKeep the 2switch pressed for another
second.
XMake sure that the sliding sunroof can be fully opened and closed again (Ypage 93).
XIf this is not the case, repeat the steps above.
Operating the panorama roof with
power tilt/sliding panel
Opening and closing
:To raise
;To open
=To close/lower
The panorama roof with power tilt/sliding panel
can only be opened when the roller sunblind is
open.
XTurn the SmartKey to position 1or2 in the
ignition lock.
XPress or pull the 2switch in the corre-
sponding direction.
If you press/pull the 2switch beyond the
pressure point, automatic operation is started in the corresponding direction. You can stop auto-
matic operation by pressing/pulling the switch
again.
The automatic raising feature is available only
when the panorama roof with power tilt/sliding
panel is closed.
Operating the roller sunblinds for the
panorama roof with power tilt/sliding
panel
Important safety notes
GWARNING
Parts of the body could become trapped
between the roller sunblind and frame or slid-
ing sunroof during automatic opening or clos-
ing. There is a risk of injury.
When opening or closing, make sure that no
body parts are in the sweep of the roller sun-
blind.
94Sliding sunroof
Opening and closing