MERCEDES-BENZ GLS SUV 2018 Manual Online

KEYLESS-GOstart function
Gene ral notes
Bear in min dthat th eengin ecan be started by
any of th evehicl eoccupant sif there is aSmart -
Key in th evehicl e (
Ypage 142).
Changing the settings ofthe locking
system
You can chang eth esetting sof th elocking sys-
tem. This mean sthat only th edriver's door and
th efuel filler flap are unlocke dwhen th evehicl e
is unlocked. This is useful if you frequentl ytravel
alone.
XTo change th esetting: press and hold down
th e% and& buttons simultaneousl y
for about six seconds until th ebattery indica-
to rlamp flashes twice (
Ypage 80).
If th esetting of th elocking system is changed
within th esignal range of th evehicle, pressing
th e& or% button:
Rlocks or
Runlocks th evehicl e
The SmartKey no wfunction sas follows :
XTo unlock: press the% buttononce .
XTo unlock centrally: press the% button
twice .
XTo lock centrally: press the& button.
The KEYLESS-GO function is changed as fol -
lows :
XTo unlock th edriver's door :touch th einner
surfac eof th edoor handle on th edriver's
door .
XTo unlock centrally: touch theinner surfac e
of th edoor handle on th efront-passenger
door or th erear door .
XTo lock centrally: touch theouter sensor
surfac eon on eof th edoor handles
(
Ypage 78) .
XTo restor eth efactory settings: press and
hold down th e% and& buttons simul-
taneously for approximately six seconds until
th ebattery chec klamp flashes twice
(
Ypage 80) .
Mechanical key
Gene ral notes
If th evehicl ecan no longer be locke dor
unlocke dwit hth eSmartKey or wit hKEYLESS -
GO, use th emechanical key.
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 unloc kth evehicl eusin gth emechanical
key, th efuel filler flap will no tbe unlocke dauto -
matically.
XTo unlock th efuel filler flap: insert the
SmartKey int oth eignition lock.
Removing the mechanical key
XPush release catch :in th edirection of th e
arrow and at th esam etime remove mechan -
ical ke y; from th eSmartKey.
Fo rfurther information about :
RUnlocking thedriver's door (Ypage 84)
RUnlocking thecargo compartmen t
(Ypage 88 )
RLocking th evehicl e (Ypage 84)
Inserting the mechanical key
XPush mechanical ke y; completely int oth e
SmartKey until it engage sand release
catch :is bac kin it sbasic position .
SmartKey79
Opening and closing
Z

SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatalinjury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separatelyand recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work-
shop.
Checking the battery
XPress the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 80).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the & or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the SmartKey
(Ypage 79).
XPress mechanical key ;into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover :opens. Do not
hold battery compartment cover :closed
while doing so.
XRemove battery compartment cover :.
80SmartKey
Opening and closing

XRepeatedly tap theSmartKey against your
palm until battery =falls out .
XInsertth ene wbattery wit hth epositive ter-
minal facing upwards. Use alint-free cloth to
do so.
XMak esur ethat th esurfac eof th ebattery is
free of lint, grease and other contaminants.
XInser tth efron ttab sof battery compartmen t
cover :intoth ehousing first and then press
to close it .
XInsertmechanical ke y; intoth eSmartKey
(Ypage 79).
XChec kth efunction of all SmartKey buttons on
th evehicle.
Problems with the SmartKey
ProblemPossible causes/consequences and MSolutions
You can no longer lockor
unlock th evehicl eusin g
th eSmartKey.The SmartKey battery is discharged or nearly discharged.
XChec kth eSmartKey battery (Ypage 80) and replace it if necessar y
(Ypage 80).
If this does no twork:
XUnloc k (Ypage 84 )or loc k (Ypage 84 )th evehicl eusin gth e
mechanical key.
There is interferenc efrom apowerful source of radi owaves.
XUnloc k (Ypage 84) or loc k (Ypage 84)th evehicl eusin gth e
mechanical key.
The SmartKey is faulty.
XUnloc k (Ypage 84 )or loc k (Ypage 84) th evehicl eusin gth e
mechanical key.
XHav eth eSmartKey checke dat aqualified specialist workshop.
You can no longer loc kor
unlock th evehicl eusin g
KEYLESS-GO .KEYLESS-GO was deactivated.
XReactivateKEYLESS-GO (Ypage 78).
The SmartKey battery is discharged or nearly discharged.
XCheckth eSmartKey battery (Ypage 80) and replace it if necessar y
(Ypage 80).
If this does no twork:
XUnloc k (Ypage 84 )or loc k (Ypage 84 )th evehicl eusin gth e
mechanical key.
SmartKey81
Opening and closing
Z

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

Doors
Important safet ynotes
GWARNING
If children are lef tunsupervised in th evehicle,
they could:
Rope nth edoors ,thus endangerin gother
people or road users.
Rget out and disrup ttraffic .
Roperat eth evehicle' sequipment.
Additionally, children could set th evehicle in
motion if, fo rexample, they:
Rrelease th eparking brake .
Rshiftingth eautomatic transmissio nout of
par kposition P
RStart theengine.
There is aris kof an acciden tand injury.
Whe nleavin gth evehicle, always take th e
SmartKey wit hyou and loc kth evehicle. Never
leav echildren or animals unattended in th e
vehicle. Always keep th eSmartKey out of
reach of children .
Unlockingan dopening doors from
th einside
You can ope n adoo rfrom insid eth evehicle
eve nif it has bee nlocked. You can only ope nth e
rea rdoors from insid eth evehicle if they are no t
secure dby th echild-proof locks (
Ypage 65).
If th evehicle has previously bee nlocke dfrom
th eoutside, opening adoo rfrom th einsid ewill
trigger th eanti-thef talar msystem. Switc hof f
th ealar m (
Ypage 75).
XFront door: pull doorhandle ;.
If th edoo ris locked, locking knob :pop sup.
The doo ris unlocke dand can be opened.
XRea rdoor: pull doo rhandle ;.
If th edoo ris locked, locking knob :pop sup
and th edoo runlocks .
XPull doo rhandle ;again .
The doo rcan be opened.
Centrally locking an dunlocking th e
vehicle from th einside
You can centrall yloc kor unloc kth evehicle from
th einside. The buttons are located on bot hfron t
doors .
XTo unlock :press butto n:.
XTo lock :press butto n;.
If th efront-passenger doo ris closed, th evehi-
cl e locks .
Meanwhile, th efue lfiller flap will no tbe locke d
or unlocked.
You canno tunloc kth evehicle centrall yfrom th e
insid eif th evehicle has bee nlocke dfrom th e
outside.
You can ope n afron tdoo rfrom insid eth evehi-
cl e eve nif it has bee nlocked.
If alocke ddoo ris opene dfrom th einside, th e
previous unloc kstatus of th evehicle will be
take ninto consideration if:
Rth evehicle was locke dusin gth elocking but -
to nfo rth ecentral locking ,or
Rif th evehicle was locke dautomatically
The vehicle will be full yunlocke dif it had previ-
ousl ybee nfull yunlocked. If only th edriver's
doo rhad bee npreviously unlocked, only th e
doo rwhic hhas bee nopene dfrom th einsid eis
unlocked.
Doors83
Opening and closing
Z

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

GWARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!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
(
Ypage 392).
You should preferably place luggage or loads in
the cargo compartment. Observe the loading
guidelines (
Ypage 300).
Do not leave the SmartKey in the cargo com-
partment. You could otherwise lock yourself
out.
You can:
Rclose the tailgate manually from outside
Ropen and close the tailgate automatically
from outside
Ropen and close the tailgate automatically
from inside
Rlimit the opening angle of the tailgate
Runlock the tailgate from inside with the emer- gency release
Tailgate reversing feature
On vehicles with the tailgate remote closing fea-
ture, the tailgate is equipped with automatic
obstacle recognition with a reversing feature. If
a solid object blocks or restricts the tailgate
when automatically opening or closing, this pro-
cedure is stopped. If the tailgate is stopped dur-
ing the closing procedure, it will open again
automatically. The automatic obstacle recogni-
tion with reversing feature is only an aid. It is not
a substitute for your attentiveness when open-
ing and closing the tailgate.
GWARNING
The reversing feature does not respond:
Rto soft, light and thin objects, e.g. fingers
Rover the last Óin (8 mm) of the closing
movement
The reversing feature cannot prevent some-
one from becoming trapped in these situa-
tions in particular. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress the Fbutton on the SmartKey, or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing or locking button on the
tailgate or
Rpull the handle on the tailgate
Opening and closing manually from
outside
Opening
XPress the %button on the SmartKey.
XPull handle :and release it.
The tailgate opens automatically.
Cargo compartment85
Opening and closing
Z

Closing
XPull the tailgate down using recess:.
XAllow the tailgate to drop into the lock.
XLock the vehicle if necessary with the &
button on the SmartKey or with KEYLESS-GO.
iIf a KEYLESS-GO key is detected in the cargo
compartment, the tailgate will not lock.
Opening/closing automatically from
the outside
Important safety notes
GWARNING
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:
Rpress the Fbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the closing or locking button on the
tailgate.
Rpull the handle on the tailgate
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 the tailgate automatically
You can open the tailgate automatically with the
SmartKey or the handle in the tailgate.
XPress and hold the Fbutton on the Smart-
Key until the tailgate opens.
or
XWhen the tailgate is unlocked, pull the tailgate
handle and let it go again immediately.
or
XWith 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
86Cargo 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

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.
XTo open the tailgate: pull the handle on the
tailgate.
XTo 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.
XTo 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
XPress 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
(
Ypage 392).
If the tailgate can no longer be unlocked:
Rusing the SmartKey, or
Rusing the remote operating switch in the door
control panel:
Use the emergency release.
Opening
XTake mechanical key ;out of the SmartKey
(Ypage 79).
XInsert mechanical key ;or a suitable tool,
e.g. a thin screwdriver, into opening :in the
paneling and push it in.
The tailgate is released.
XOpen the tailgate.
XInsert mechanical key ;into the SmartKey
(Ypage 79).
Side windows
Important safety notes
GWARNING
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.
GWARNING
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.
88Side windows
Opening and closing