2021 MERCEDES-BENZ GLS SUV keyless

The manufacturers of
the wireless components
installed in theve hicle hereby declare that the
wireless components ins talled in theve hicle com-
ply with thete ch nical regulations for two-w ay ra
dios. You can obtain fur ther information from a
Mercedes-Benz service centre. W
W
ir
ireless applications in t
eless applications in t he v
he vehicle
ehicle
Besides the typical frequencies for mobile com-
munication cars byMercedes-Benz ma keuse of
th efo llowing automotive radio applications.
W
W ir
ireless applications in t
eless applications in t he v
he vehicle
ehicle T
T
ec
ec hnology Fr
hnology Freq
eq uency r
uency r angeT r
ang eT ransmission output/magne
ansmission output/magne tic
tic/eld
/eld s
strtr eng th
ength
Re mo teKeyless Entr y2 0 kHz (9–90 kHz) ≤ 72 dBμA/m at 10m
Wi reless Powe rTr ansmission 105 kHz (90–119 kHz)≤ 42 dBμA/m at 10m
Re mo teKeyless Entr y1 20 kHz (119–135 kHz) ≤ 42 dBμA/m at 10m
Wi reless Powe rTr ansmission 127 kHz (119–135 kHz)≤ 66 dBμA/m at 10m withthe magnetic /eld
strength le vel decreasing 3dB/oct aveabove119
kHz
Ne ar-/eld communication 13.553–13.567 MHz≤ 42 dBμA/m at 10m
Re mo teKeyless Entr y,Garage Door Opener, Tire
Pressure Monitoring 433 MHz (433.05–434.79 MHz)
≤ 10 mW ERP
Block Heater Remo teControl, Garage Door
Opener 868 MHz (868.0–868.6 MHz)≤
25 mW ERP General no
tes
29
29

T
T
ec
ec hnology Fr
hnology Freq
eq uency r
uency r angeT r
ang eT ransmission output/magne
ansmission output/magne tic
tic/eld
/eld s
strtr eng th
ength
Block Heater Remo teControl, Garage Door
Opener 869 MHz (868.7–869.2 MHz)≤
25 mW ERP
Blue toot h, Kleer, RLAN, wireless Headphone s2.4 GHz ISM band (2400–2483.5 MHz) ≤ 100 mW EIRP
RLAN 5.1 GHz UNII-1 (5150–5250 MHz)≤ 25 mW EIRP
Interior Monitoring Radar, RLAN 5.8 GHz UNII-3 (5725–5875 MHz)≤ 25 mW EIRP
Re mo teKeyless Entr y7 .25 GHz UWB (6.0–8.5 GHz) ≤ -41.3 dBm/MHz EIRP mean ≤ 0 dBm/MHz
EIRP peak
76 GHz radar 76–77 GHz ≤ 55 dBm peak EIRP
Carsharing Module NFC:
NFC:
13.553–13.567 MHz
Bluet Bluet ooth
oo th®
®
:
:
2402–2480 MHz NFC:
NFC:
≤ 42 dBμA/m at 10 m
Bluet Bluet
ooth
oo th®
®
:
:
≤ +4 dBm (class 2) 30
30
General no
tes

A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the acous
he acous tic loc
tic locking
kingv
ver
er i/-
i/-
cation
cation signal
signal Multimedia system:
4 © 5
Settings 5
Vehicle #
Activate or deactivate Acoustic lock.
% Please observ
Please observ e:
e:
The selected setting forth e acoustic locking
ve ri/cation signal must comply with there le-
va nt national road and tra1c regulations. In
some countries, including German y,using the
acoustic locking veri/cation signal is forbid-
den bytra1c la ws(in accordance with §16
Pa ra. 1 and §30 Para. 1 of the German
national road tra1c regulations). The driver of
th eve hicle must comply with these regula-
tions. In countries where the use of this func-
tion is forbidden, this function is not activated
in theve hicle and must not be activated. Changing t
Changing t
he unloc
he unlocking se
king settings
ttings Po
ssible unlocking functions of theke y:
R Central unlocking
R Unlocking the driver's door and fuel /ller 0ap #
T
T o switc
o switc h be
h betw
tween se
een se ttings:
ttings: presstheÜ
and ß buttons simultaneously for appr ox-
imately six seconds until the indicator lamp
0ashes twice.
Options if the unlocking function forth e driver's
door and fuel /ller 0ap has been selected:
R T
To unloc
o unloc k t
k the v
he v ehicle centr
ehicle centr ally:
all y: press the
Ü button twice.
R V
Vehicles wit
ehicles wit h KEYLESS-GO:
h KEYLESS-GO: ifyo uto uch the
inner sur face of the door handle on the driv-
er's door, only the driver's door and the fuel
/ller 0ap are unloc ked. Deactiv
Deactiv
ating t
ating the function of t
he function of t hekey
he key V
V
ehicles wit
ehicles wit h KEYLESS-GO:
h KEYLESS-GO: ifyo u deactivate the
function of theke y,the KEYLESS-GO functions are
also deactivated. Access or drive authorization by
KEYLESS-GO is then no longer possible with that
particular key.Activate the function of theke y so
th at all its functions will again be available.
Yo u can also deactivate the function of theke yto
re duce the energy consum ption of theke y if you do not use
theve hicle or a keyfo r an extended
period of time. #
T
To deactiv
o deactiv at
ate:
e: press theß button on the
ke y twice in quick succession.
The key indicator lamp 0ashes twice brie0y
and lights up once. #
T
To activ
o activ at
ate:
e: press any but ton on thekey.
% When theve hicle is star ted with theke y in the
st ow age compartment of the centre console,
th e function of theke y is automatical lyactiva-
te d (/ page 192). 82
82
Opening and closing

&
W
W ARNI NG
ARNI NGRisk of injury topersons inside
th eve hicle when the additional door lock
is activated
If th e additional door lock is activated, the
doors can no longer be opened from the
inside. #
Never lea vepersons, in particular chil-
dren, unattended in theve hicle. #
Ifth ere are persons in theve hicle, do not
activate the additional door loc k.The additional door lock is automatically activated
in
thefo llowing situations:
R The vehicle is loc ked using thekey.
R The vehicle is loc ked using KEYLESS-GO.
If th eve hicle has been loc ked via Mercedes me
connect, the additional door lock is not activated
(/ page 344).
If th e additional door lock is activated, the doors
cannot be opened from the inside.
% ATer locking you can issue a signal with the
horn. Yo
u can pr event the additional door lock from
being activated bydeactivating interior pr otection
before locking theve hicle (/ page 107). U Unloc
nloc king/opening t
king/opening t he door
he doors fr
s from t
om t he inside
he inside #
U
Unitnit ed Kingdom only
ed Kingdom only :
:obser vethe no tes on
th e additional door lock (/ page 84). #
Pull door handle 2.
Locking pin 1pops up when the door is
unloc ked. Centr
Centr
all
ally loc
y loc king and unloc
king and unloc king t
king the v
he v ehicle fr
ehicle fr om
om
t
t he inside
he inside #
T
To unloc
o unloc k:
k:press button 1. #
T
To loc
o loc k:
k:press button 2.
% Mer
Mercedes-Ma
cedes-Ma ybac
ybach v
h vehicles:
ehicles: the buttons are
also located on there ar doors.
This does not lock or unlock the fuel /ller 0ap. Opening and closing
85
85

The
vehicle is not unloc ked:
R ifyo u ha veloc kedth eve hicle using thekey
R ifyo u ha veloc kedth eve hicle using KEYLESS-
GO Loc
Loc
king/unloc
king/unloc king t
king the v
he vehicle wit
ehicle wit h KEYLESS-GO
h KEYLESS-GO R
R
eq
eq uir
uir ements:
ements:
R The key is outside theve hicle.
R The dis tance between theke y and theve hicle
does not exceed 1 m.
R The driver's door and the door on which the
door handle is used are closed.
* NO
NOTE
TEVehicle damage due touninten-
tional opening of theta ilgate R
when using an automatic car wash
R when using a high pressure cleaner #
Deactivate the function of theke y in
th ese situations.
or #
Make sure that theke y is at a minimum
dis tance of 3 m away from theve hicle. Obser
vethe no tes:
R onwashing theve hicle in a car wash
(/ page 371)
R on using a high pressure cleaner
(/ page 374) #
T
To unloc
o unloc k t
k the v
he v ehicle:
ehicle: touch the inner sur face
of the door handle. #
T
To loc
o loc k t
k the v
he v ehicle:
ehicle: touch sensor sur face 1
or 2. #
Conv
Conv enience closing:
enience closing: touch recessed sensor
sur face 2 until the closing process has been
comple ted.
% Further information on con venience closing
(/ page 98).
If yo u open theta ilgate from outside, it is auto-
matically unloc ked. Pr
Pr
oblems wit
oblems wit h KEYLESS-GO, tr
h KEYLESS-GO, tr oubleshoo
oubleshooting
ting Y
Y
ou can no long
ou can no long er loc
er lock or unloc
k or unloc k t
k the v
he v ehicle using
ehicle using
KEYLESS-GO
KEYLESS-GO
Po ssible causes:
R The function of theke y has been deactivated.
R The key battery is weak or dischar ged. #
Activate the function of theke y (/ page 82). #
Check the battery using the indicator lamp
(/ page 81). 86 86
Opening and closing

#
Replace theke y batter y,if necessary
(/ page 83). #
Use there placement key. #
Use the emer gency keyto lock or unlock
(/ page 88). #
Have theve hicle and keych ecked at a quali-
/ed specialist workshop.
Ther
Ther e is int
e is int erf
erfer
erence fr
ence fr om a pow
om a pow er
erful r
ful r adio signal
adio signal
sour
sour ce
ce
Po ssible causes if the function of KEYLESS-GO is
impaired:
R high voltage po wer lines
R mobile phones
R electronic devices (no tebooks, tablets)
R shielding due tome tal objects or induction
loops for electrical gate systems or automatic
bar riers #
Make sure that there is su1cient distance
between theke y and the po tential sou rce of
inter fere nce. A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the aut
he automatic loc
omatic loc king f
king fea-
ea-
ture
ture The
vehicle is loc ked automatically when theve hi-
cle is switched on and the wheels are turning
fa ster than walking pace. #
T
To activ
o activ at
ate:
e: press and hold button 2for
appr oximately /ve seconds until an acoustic
signal sounds. #
T
To deactiv
o deactiv at
ate:
e: press and hold button 1for
appr oximately /ve seconds until an acoustic
signal sounds.
In thefo llowing situations, there is a danger of
being loc ked out when the function is activated:
R while theve hicle is being tow- star ted or
pushed
R ifth eve hicle is being tested on a roller dyna-
mome ter P
P
o
ow
w er closing function
er closing function &
W
WARNING
ARNING Risk of becoming trapped when
th e doors close automatically
Body parts or objects can become trapped,
causing injuries. #
Ensure that no body parts or objects are
in the closing area. #
Automatic closing of the doors can be
cancelled bypulling the outer or inner
door handle. Opening and closing
87
87

#
Switch on the po wer supply or theve hicle. #
Push remo teoperating switch 1until theta il-
ga te is fully closed. #
Press closing button 1ontheta ilgate.
V
V ehicles wit
ehicles wit h KEYLESS-GO
h KEYLESS-GO #
Press locking button 2ontheta ilgate.
If a key is de tected outside theve hicle, the
ta ilgate will close and theve hicle will be
loc ked. #
Press and hold thep button on thekey
(with theke y in the vicinity of theve hicle). V
V
ehicles wit
ehicles wit h HANDS-FREE A
h HANDS-FREE A CCESS
CCESS #
Make a kicking mo vement with your foot
below the bumper (/ page 93).
A
A ut
ut omatic rev
omatic rever
ersing function f
sing function f or t
or the t
he t ailg
ailgate
ate
The tailgate is equipped with automatic bloc kage
de tection with a reve rsing function. If a solid
object hinders or restricts theta ilgate when it is
closing automaticall y,theta ilgate will automati-
cally open again slightl y.Au tomatic bloc kage
de tection with reve rsing function is only an aid. It
is not a substitute foryo ur attentiveness when you
are closing theta ilgate. #
During the closing process, make sure that no
body parts are in the closing area. &
W
WARNING
ARNING Risk of becoming trapped
despite reve rsing function
The reve rsing function will not react:
R tosoT, light and thin objects, e.g. /n gers
R towa rdsth e end of the closing procedure
In these situations in particular, there ve rsing
function cannot pr event someone being trap-
ped. 92
92
Opening and closing

#
Ensure that thero ller sunblind can mo ve
freel y. The
roller sunblinds forth ere ar side wind ows can
be operated with the buttons forth e side windo ws
in the driver's door and in there ar doors. 1
Rear leT side wind ow/roller sunblind
2 Rear right side wind ow/roller sunblind #
T
To close fully
o close fully :
:brie0y pull the cor responding
button when the side window is closed. #
T
To open fully
o open fully :
:brie0y press the cor responding
button. Anti-t
Anti-theT
heTprot
pr otection
ection F
F
unction of t
unction of t he immobiliser
he immobiliser The immobiliser pr
events your vehicle from being
star ted without the cor rect key.
The immobiliser is automatically activated when
th eve hicle is switched o., and deactivated when
th eve hicle is switched on. A
A
T
TA
A (Anti-
(Anti- TheT
TheT Alar
Alarm syst
m syst em)
em) F
F
unction of t
unction of t heAT
he ATA systA syst em
em
If th eATA system is primed, a visual and audible
alarm is triggered in thefo llowing situations:
R when a door is opened
R when theta ilgate is opened
R when the bonnet is opened R
when interior pr otection is triggered
(/ page 107)
R when tow- awa y protection is triggered
(/ page 106)
The ATA system is primed automatically aTer
appr oximately ten seconds in thefo llowing situa-
tions:
R aTer locking theve hicle with thekey
R aTer locking theve hicle using KEYLESS-GO Opening and closing
105
105