2019 MERCEDES-BENZ GLS SUV alarm

If
yo u do not open theve hicle within appr ox‐
imately 40 seconds af ter unlocking:
R theve hicle is loc ked again
R anti- theft pr otection is reactivated
Do not keep theke yto ge ther with electronic
devices or me tal objects. This can af fect the
ke y's functionalit y.
Do not keep theke y in thete mp erature-contro l‐
led cup holder. Otherwise, theke y will not be
re liably de tected.
% If battery check lamp 2does not light up
af te r pressing theÜ orß button, the
battery has been dischar ged.
Changing theke y bat tery ( / page 84). Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
4 © 5
Settings 5
Vehicle #
Activate or deacti vate Acoustic lock .
% Please no
te: The selected setting
forth e acoustic locking
ve rification signal must comply wi th there le‐
va nt national road and traf fic re gulations. In
some countri es, including German y,using
th e acoustic locking verification signal is for‐
bidden bytraf fic la ws(in accordance with
§16 Para. 1 and §30 Para. 1 of the German
national road traf fic re gulations). The driver
of theve hicle must comply with these regu‐
lations. In countri es wherethe use of this
function is forbidden, this function is not
activated in theve hicle and must not be acti‐
va ted. Ac
tivating/deactivating the panic alarm Re
quirements:
R The ignition is switched off.
% The panic alarm function is only available in
cer tain countries. #
Toactivate: press button 1for appro x‐
ima tely one second.
A visual and audible alarm is triggered. #
Todeactivate: briefly press but ton1 again.
or #
Press thest art/ stop button on the cockpit
(the key is inside theve hicle). Changing
the unlocking settings Po
ssible unlocking functions of theke y:
R cent ral unlocking
R unlocking the driver's door and fuel filler flap Opening and closing
83

Problem
Possible causes/consequences and M
MSolutions #
Immediately af ter auto matic reve rsing, pull and hold the3 button down again tothe point of resist‐
ance until the sliding sunroof is closed.
The sliding sunroof will be closed with increased forc e.
If th e sliding sunroof is obstructed again and reopens again slightly: #
Repeat the pr evious step.
The sliding sunroof will be closed again with increased forc e.
Ve hicles without a panoramic slid‐
ing sunroof: the sliding sunroof does
not operate smoo thly. #
Push the3 button up tothe point of resis tance until the sliding sunroof is fully open. #
Press the3 button for ano ther second. #
Close the sliding sunroof.
Ve hicles with a panoramic sliding
sunroof: the sliding sunroof or the
ro ller sunblind does not opera te
smoo thly. #
Pull and hold the3 button little bylittle until the sliding sunroof is fully closed. #
Pull and hold the3 button little bylittle until thero ller sunblind is fully closed. #
Use automatic operation tofully open and then close the sliding sunroof. Anti-theft pr
otection Fu
nction of the immobiliser The immobiliser pr
events your vehicle from
being star ted without the cor rect key. The immobiliser is automatically activated when
th e ignition is switched off and deactivated when
th e ignition is switched on. ATA
(Anti-Theft Alarm sy stem) Fu
nction of theATA system
If th eATA system is primed, a visual and audible
alarm is triggered in thefo llowing situations:
R when a door is opened 108
Opening and closing

R
when theta ilgate is opened
R when the bonn etis opened
R when interior pr otection is triggered
(/ page 110)
R when tow- aw ay protection is triggered
(/ page 109)
The ATA system is primed automatically af ter
appr oximately ten seconds in thefo llowing situa‐
tions:
R afte r locking theve hicle with thekey
R afte r locking theve hicle using KEYLESS-GO Indicator lamp
1flashes when theAT A sy stem
is primed.
The ATA sy stem is deactivated automatically in
th efo llowing situations:
R afte r unlocking theve hicle with thekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(/ page 192) R
afte r unlocking theve hicle using KEYLESS-
GO
% When the Mercedes‑Benz emer gency call
sy stem is active and the alarm stay s on for
more than 30 seconds, a message is auto‐
matically sent tothe Cus tomer Assis tance
Centre (/ page 482).
Deactivating theATA #
Press theÜ, ßorp button on the
key.
or #
Press thest art/ stop button with theke y in
th estow age compartment (/ page192)
Deactivating the ala rmusing KEYLESS-GO: #
Grasp the outside door handle with thekey
outside theve hicle. Fu
nction of tow- aw ay protection An audible and visual alarm is triggered if an
alteration
to yourvehicle's angle of inclination is
de tected while tow- aw ay protection is primed. Opening and closing
109

To
w- aw ay protection is automatically primed
af te r about 60 seconds:
R afte r locking theve hicle with thekey
R afte r locking theve hicle using KEYLESS-GO
To w- aw ay protection is only primed when thefo l‐
lowing components are closed:
R the doors
R theta ilgate
To w- aw ay protection is automatically deactiva‐
te d:
R afte r pressing theÜ orp button on
th ekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(/ page 192)
R afte r unlocking theve hicle using KEYLESS-
GO
Information on de tecting damage on a pa rked
ve hicle (/ page 226). Priming/deactivating
tow- aw ay protection Multimedia sy
stem:
4 © 5
Settings
5 Schnellzugriff (Quick access) #
Prime or deactivate Tow-away protection .
To w- aw ay protection is primed again in thefo l‐
lowing cases:
R The vehicle is unloc ked again.
R A door is opened.
R The vehicle is loc ked again.
% Ifqu ick access is una vailable, select the
Vehicle submenu in theSettings main menu
to prime or deactivate tow- aw ay protection. Fu
nction of interior pr otection When interior pr
otection is primed, a visual and
audible alarm is triggered if mo vement is de tec‐
te d in theve hicle interior.
Interior pr otection is primed automatically af ter
appr oximately ten seconds:
R afte r locking theve hicle with thekey R
afte r locking theve hicle using KEYLESS-GO
Interior pr otection is only primed when thefo l‐
lowing components are closed:
R the doors
R theta ilgate
Interior pr otection is automatically deactivated:
R afte r pressing theÜ orp button on
th ekey
R afte r pressing thest art/ stop button with the
ke y in thestow age compartment
(/ page 192)
R afte r unlocking theve hicle using KEYLESS-
GO
The following situations can lead toafa lse
alarm:
R moving objects such as masc ots in theve hi‐
cle interior
R when the side window is open
R when the panoramic sliding sunroof is open 11 0
Opening and closing

Yo
u will recei veinformation about thefo llowing
points:
R The area of theve hicle that may ha vebeen
damaged.
R The forc e of the impact.
The following situations can lead toinadver tent
acti vation:
R The pa rked vehicle is mo ved, e.g. in a two-
st or ey garage.
% Deactivate tow- aw ay protection in order to
pr eve nt inadver tent acti vation. If you deacti‐
va te tow- aw ay protection, damage de tection
will also be deactivated.
Sy stem limitations
De tection may be restricted in thefo llowing sit‐
uations:
R The vehicle is damaged without impact, e.g.
if an outside mir ror is torn off or the paint is
damaged byakey.
R Impact occurs at low speed.
R The electric parking brake is not applied. Note
s on parking up theve hicle If
yo u lea vetheve hicle par ked up for longer than
fo ur we eks, the disconnected battery may be
damaged bydeep dischar ge.
If yo u lea vetheve hicle par ked up for longer than
six weeks, it may suf fer disuse dama ge.
% Further information can be obtained at a
qu alified specialist workshop. St
andby mode (extension of the star ter bat‐
te ry 's period out of use) St
andby mode function
% This function is not available for all models.
If standby mode is activated, theve hicle can be
par kedfo r an extended pe riod of time without
losing po wer.
St andby mode is characterised bythefo llowing:
R thest ar ter battery is preser ved.
R the maximum non-operational time appears
in the media displa y.
R the connection toonline services is inter rup‐
te d. R
theAT A (anti-theft alarm sy stem) is not avail‐
able.
R the interior pr otection and tow- aw ay protec‐
tion functions are not available.
R the function for de tecting damage on a
pa rked vehicle is not available.
If th efo llowing conditions are fulfilled, standby
mode can be activated or deactivated using the
multimedia sy stem:
R the engine is switched off.
R the ignition is switched on.
Exceeding theve hicle's displa yed non-opera‐
tional time may cause inco nvenience, i.e. it can‐
not be guaranteed that thest ar ter battery will
re liably start the engine.
The star ter battery must be charge dfirs t in the
fo llowing situations:
R The vehicle's non-operational time must be
ex tended.
R The Battery charge insufficient for standby
mode messa geappears in the media displa y. Driving and pa
rking 227

Display messages
Possible causes/consequences and M
MSolutions
? *T
he bonnet is open. &
WARNING Risk of accident due todriving with the engine bonn etunlo cked
An unloc ked engine bonn etmay open up when theve hicle is in motion and block your vie w. #
Never unlock the engine bonn etwhen driving. #
Before every trip, ensure that the engine bonn etis loc ked. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the bonn et.
A *T
hetailgate is open. &
DANG ER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the
ve hicle interior if theta ilgate is open when the engine is running, especial lyifth eve hicle is in motion. #
Alw ays switch off the engine before opening theta ilgate. #
Never drive with theta ilgate open. #
Close theta ilgate.
Anti-theft alarm system
Malfunction *T
he anti-theft alarm sy stem is malfunctioning. #
Consult a qualified specialist workshop. 660
Display messages and warning/indicator lamps

Ad
justing the mid- range, treble and
bass
Burmes ter®
high-end 3D sur round
sound sy stem ....................................... 51 8
Ad justing the sound focus
Burmes ter®
sur round sound sy stem ....5 17
Ad justing the sound optimisation
Burmes ter®
high-end 3D sur round
sound sy stem ....................................... 51 8
Ad justing treble, mid- range and bass
settings
Burmes ter®
high-end 3D sur round
sound sy stem ....................................... 51 8
Burmes ter®
sur round sound sy stem ....5 16
ADS PLUS da mping sy stem
see AIRMATIC
Af ter-sales service centre
see ASS YST PLUS
Air conditioning menu Calling up ............................................ 17 7
Air conditioning sy stem
see Climate control Air distribution
........................................ .175
Setting (multimedia sy stem) ................1 78
Air freshener sy stem
see Frag rance sy stem
Air inlet see Air-water duct
Air pressure see Tyre pressure
Air suspension see AIRMATIC
Air vents ................................................... 186
Ad justing (front) .................................. 186
Ad justing (rear) .................................... 187
Glo vebox .............................................1 88
Air vents
see Air vents
Ai r-re circulation mode ............................ 17 9
Air-water duct .......................................... 538
Ke eping free ........................................5 38
Airbag ........................................................ .42
Ac tivation .............................................. 37
Fr ont airbag (driver, front passenger) ....42
Ins tallation locations ............................ .42Knee airbag ........................................... 42
Overview ............................................... 42
PA SSENGER AIR BAG indicator lamp .... .47
Pr otection ..............................................44
Re duced pr otection ...............................45
Side impact airbag ................................ 42
Wi ndow airbag ....................................... 42
Ai rflow ...................................................... 175
AIRM ATIC ................................................ .262
Setting ................................................. 265
Suspension .......................................... 262
Alarm see Panic alarm
Alarm sy stem
see ATA (anti-theft alarm sy stem)
All-wheel drive see 4MATIC
Alternative route
see Route
Ambiance light Setting (Rear Seat En tertainment
Sy stem) ............................................... 525 Index
681

Ambient lighting
Setting (multimedia sy stem) ................1 64
Android Auto ............................................ 473
Connecting a mobile phone ................ .474
Ending ................................................ .475
Information .......................................... 474
Overview ..............................................4 73
Sound settings ..................................... 475
Tr ans ferred vehicle data ......................4 75
Android Auto™
Control using the application buttons
.............................................................4 75
Animals Pets in theve hicle ..................................81
Anti-lock braking sy stem
see ABS (Anti-lock Braking Sy stem)
Anti-skid chains
see Snow chains
Anti-theft ala rmsystem
see ATA (anti-theft alarm sy stem)
Anti-theft pr otection
Ad ditional door lock .............................. 86
Immobiliser .........................................1 08Anti-theft pr
otection
see ATA (anti-theft alarm sy stem)
Anticipatory occupant pr otection
see PRE- SAFE®
(anticipatory occu‐
pant pr otection)
see PRE-SAFE ®
PLUS (anticipatory
occupant pr otection plus)
Apple CarPlay™ ....................................... 472
Connecting an iPhone ®
...................... .472
Control using the application buttons
.............................................................4 73
Ending ................................................. 473
No tes ................................................... 472
Overview ..............................................4 72
Sound settings ..................................... 473
Tr ans ferred vehicle data ......................4 75
Asht ray
Fr ont centre console ........................... 15 0
Assistance sy stems
see Driving saf ety sy stem
Assistant display Menu (on-board computer) .................. 325 ASS
YST PLUS ........................................... 531
Battery disconnection pe riods .............5 32
Displ aying the service due date ........... 531
Fu nction/no tes ................................... 531
Re gular maintenance work .................. 531
Special service requ irements .............. 531
ATA (anti-theft ala rmsystem) ................ .108
Deactivating the alarm ........................ 109
Fu nction .............................................. 108
Fu nction of interior pr otection .............1 10
Priming/deactivating interior pr otec‐
tion .......................................................1 11
Priming/deactivating tow- aw ay pro‐
te ction ................................................. 11 0
To w- aw ay protection function .............. 109
AT TENTION ASSI ST.......................... 300, 301
Fu nction .............................................. 300
Setting ................................................. 301
Sy stem limitations ...............................3 00
At tention assistant
see ATTENTION ASSIST
Au gmented reality
see Route guidance with augmented reality 682
Index