2021 MERCEDES-BENZ GLS SUV engine

ro
w of seats and hold it down until there ar
seat audib lyengages.
The rear seat will tip down wards and mo ve
bac k.The seat backrests and head restraint
will then mo veinto a suitable seat position
automaticall y.
If a seat on the second row of seats is not
engaged, this will be shown on the multifunc-
tion display on the inst rument cluster. #
Tointer rupt thefo lding procedure before
engagement, let go of button 1.Tocontinue
th efo lding procedure, press and hold button
1 again.
F
F olding t
olding t he r
he rear seats f
ear seats f orw
orwar
ards mec
ds mec hanically
hanically
(emerg
(emerg ency r
ency release)
elease)
Yo u can also fold there ar seats forw ards mechan-
ically using release loops. The release loops are
located on the outer sides and rear sides of the
seats on the second row of seats. Re
lease loops on the second row of seats Re
lease loops on there ar sides of the second row of
seats #
Pull one of release loops 1. #
Foldthe seat backrest forw ards. #
Before commencing your journe y,make sure
th at the seat backrest and there ar ben chseat
are engaged. Head r
Head r
es
estr
traints
aints A
A
djus
djusting t ting t he fr
he front seat head r
ont seat head r es
estr
traints manually
aints manually &
W
WARNING
ARNING Risk of injury if vehicle settings
are adjusted while theve hicle is in motion
Yo u could lose control of theve hicle in partic-
ular in thefo llowing situations:
R Ifyo u adjust the driver's seat, the head
re straints, the steering wheel or the mir ror
while theve hicle is in motion.
R Ifyo ufa sten your seat belt while theve hi-
cle is in motion. #
Before starting the engine: adjust the
driver's seat, head restraints, stee ring
wheel and mir ror in particular and fasten
yo ur seat belt. 118
118
Seats and st
owing

#
Press preset position button 4.
Bo th seats mo veinto the stored position.
% You can use there ar-compartment child
saf ety lock todisable this function
(/ page 80). S
S
t
to
o w
w ag
ag e ar
e ar eas
eas N
No
ot
tes on loading t
es on loading t he v
he vehicle
ehicle &
D
DAN
AN GER
GER Risk of poisoning from exhaust
ga ses
Combustion engines emit poisonous exhaust
ga ses, such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il-
ga te is open when theve hicle is running,
especially if theve hicle is in motion. #
Always switch o. theve hicle before
opening theta ilgate. #
Never drive with theta ilgate open. &
W
WARNING
ARNING Risk of injury from unsecured
items in theve hicle
If objects, lug gage or loads are not secured or
not secured su1cient ly,they could slip, tip
ov er or be thro wn around and thereby hit vehi-
cle occupants.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects in such a wayth at
th ey cannot be thro wn around. #
Before the journe y,secure objects, lug-
ga ge or loads against slipping or tipping
ove r. &
W WARNI NG
ARNI NGRisk of injury due toobjects
being st owed incor rectly
If objects in theve hicle interior are st owed
incor rectl y,they can slide or be thro wn around
and hit vehicle occupants. In addition, cup
holders, open st owage spaces and mobile
phone brac kets cannot alw aysreta in all
objects they contain.
There is a risk of injur y,particular lyin the
eve nt of braking manoeuvres or abrupt
ch anges in direction. #
Always st owobjects so that they cann ot
be thro wn around in such situations. #
Always make sure that objects do not
pr otru de from st owage spaces, lug gage
nets or st owage nets. Seats and st
owing
135
135

5
L Low beam/high beam
6 R Switches there ar fog light on/o.
When low beam is activated, theT indicator
lamp forth e standing lights will be deactivated
and replaced bytheL low- beam indicator
lamp. #
Always park your vehicle safely using su1cient
lighting, in accordance with there leva nt legal
stipulations.
* N
NO OTE
TE Battery dis charging byoperating the
standing lights Operating
the standing lights over a period of
hours puts a strain on the batter y. #
Where possible, switch on theright X
or leT Wparking light. Fo
rve hicles that are wider than 2 m or lon ger
th an 6 m,single-sided parking lighting is not per-
mitted in some countries. In this case, the stand-
ing lights are also switched on in the parking
lights position. If
th e battery is insu1cient lych arge d, the stand-
ing lights or parking lights will be switched o.
automatically tofacilitate the next engine start.
The exterior lighting (e xcept standing and parking
lights) will switch o. automatically when the driv-
er's door is opened.
R Obser vethe no tes on sur round lighting
(/ page 166).
A
A ut ut omatic dr
omatic dr iving lights function
iving lights function
When theve hicle is switched on, the standing
lights, low beam and daytime running lights are
switched on automatically depending on the light
conditions. &
W
WARNING
ARNING Risk of accident when the
dipped beam is switched o. in poor visi-
bility
When the light switch is set toà ,the
dipped beam may not be switched on auto-
matically if there is fog, snow or other causes
of poor visibility such as spr ay. #
In such cases, turn the light switch to
L . The automatic driving lights are only an aid.
Yo u
are responsible forve hicle lighting.
Switc Switc hing t
hing t he r
he rear f
ear f og lights on or
og lights on or o.
o.
R
R eq
eq uir
uir ements:
ements:
R The light switch is in theL orà posi-
tion. #
Press the R button.
Please obser vethe count ry-speci/c la wsonthe
use of rear fog lamps.
% Vehicles with AIRMATIC or E- ACTIVE BODY
CO NTROL with o.-road pac kage : when the
re ar fog light is switched on, o.-road le vel +3
will not be available. If there ar fog light is
switched on and o.-road le vel +3 is activated,
th eve hicle will be lo weredto o.-road le vel
+2. Light and sight
161
161

The
vehicle in front will be illuminated bythe low
beam.
At speeds greater than 30 km/h:
R If no other road users are de tected, the high
beam will switch on automaticall y.
R Ifot her road users are de tected, the partial
high beam will switch on automaticall y.
At speeds below 25 km/h or when there is su1-
cient street lighting:
R The partial high beam will switch o. automati-
cally.
R The high beam will switch o. automaticall y.
At speeds greater than appr oximately 50 km/h:
R The headlamp range of the low beam is regu-
lated automatically based on the distance to
ot her road users.
% The system's optical sensor is located behind
th e windscreen near theove rhead control
panel. Switc
Switc hing A hing A dap
daptiv
tive Highbeam Assis
e Highbeam Assist Plus t Pluson/o.
on/o.
Switc
Switc hing on
hing on #
Turn the light switch totheà position. #
Switch on the high beam using the combina-
tion switch.
When the high beam is switched on automati-
cally in the dar k, the_ indicator lamp will
light up on the central display section of the
inst rument displa y.
Switc Switc hing
hing o.
o. #
Switch o. the high beam using the combina-
tion switch. Se
Se
tting t
tting t he lo
he low beam (v
w beam (v ehicles wit
ehicles wit h MUL
h MULTIBEAM
TIBEAM
LED headlam
LED headlam ps onl
ps only)
y) Multimedia system:
4 © 5
Settings 5
Lights
5 Dipped-beams #
Select Right-side traffic, Left-side trafficor
Automatic. Se
Se
tting t
tting t he e
he ext
xter
er ior lighting
ior lighting switc
switch-o.
h-o. dela
delay time
y time R R
eq eq uir
uir ements:
ements:
R The light switch is in theà position.
Multimedia system: 4 © 5
Settings 5
Lights
5 Ext. light. del. sw. off #
Set the swit ch-o. delay time.
When theve hicle engine is switched o., the
ex terior lighting will be activated forth e set
time. Switc
Switc
hing t
hing t he surr
he surr ound lighting
ound lighting on/o.
on/o. Multimedia system:
4 © 5
Settings 5
Lights
5 Surround lighting
When Surround lighting is active,theex terior
lighting lights up for 40 seconds aTer theve hicle
is unloc ked. When you start theve hicle, the sur-
ro und lighting is deactivated and the automatic
driving lights are activated.
Illuminat Illuminat ed r
ed running boar
unning boar ds:
ds:when the sur round
lighting is switched on, the illumination of theru n- 166
166
Light and sight

Ov
Ov
er
ervie
vie w of climat
w of climat e contr
e control syst
ol systems
ems N
No
ot
tes on climat
es on climat e contr
e control
ol An interior air /lter in combination with
the pre/l-
ter inthe engine compartment must alw ays be
used so that the air conditioning system, pollution
le ve l monitoring and the air /lt ration workcor-
re ctl y.Use /lters recommended and appr oved by
Mercedes-Benz. Alw ays ha vemaintenance work
car ried out at a quali/ed specialist workshop. Ov
Ov
er
ervie
vie w of t
w of t he air conditioning contr
he air conditioning contr ol panel
ol panelThe indicator lamps on
the buttons indicate that
th e cor responding function is activated. THERM
OTRO NIC air conditioning cont rol panel with
stationary heater (e xample)
1 w Setsthete mp erature on the driver's
side
2 A Calls up the air conditioning menu
3 H Setsthe air0ow or switches o. climate
control
4 Ã Sets climate control toautomatic mode
(/ page 180)
5 ¬ Demisting the windscreen
6 ¤ Switches there ar wind owheater on/o.
7 g Switches air-recirculation mode on/o.
(/ page 181) 8
Á Switches the A/C function on/o.
(/ page 179)
Switches residual heat on/o.
(/ page 181)
9 Vehicles with THERM ATIC or THERM OTRO NIC
control panel with stationary heater: &
swit ches stationary heater on/o.
(/ page 183)
Ve hicles with THERM ATIC or THERM OTRO NIC
control panel without stationary heater: 0
swit ches synchronisation on/o.
(/ page 181)
A w Setsthete mp erature on the front
passenger side
% THERMAT IC equipment is available for all vehi-
cles except Mercedes-M aybach vehicles. 178
178
Climate cont
rol

Deactiv
Deactiv
ating r
ating rear climat
ear climat e contr
e control
ol #
Select REAR OFF.
Re ar climate cont rol is deactivated. Switc
Switc
hing t
hing t he sync
he sync hr
hronisation function
onisation function on/o.
on/o.via
via
t
t he air conditioning contr
he air conditioning contr ol panel
ol panelClimate control can be set centrally using
the syn-
ch ronisation function. The temp erature and air
distribution setting forth e driver's side will be
adop ted automatically for all climate control
zones. #
Press the0 button.
The synchronisation function will be deactivated if
th e settings for one of theot her climate zones are
ch anged. Switc Switc
hing t
hing t he sync
he sync hr
hronisation function
onisation function on/o.
on/o.via
via
t
t he multimedia syst
he multimedia syst em
em Multimedia system:
4 Climate menu 5
First row of seats
Climate cont rol can be set centrally using the syn-
ch ronisation function. The driver's settings forte
mp erature, air quantity and air distribution are
adop ted automatically for all climate zones. #
Select SYNCand switch on or o.. Demis Demisting t
ting the windo ws
he wind ows W
W
indow
indow s mist
s mist ed up on t
ed up on t he inside
he inside #
Press theà button. #
Ifth e windo wscontinue tomist up: press the
¬ button.
W
W indow
indow s mist
s mist ed up on t
ed up on t he outside
he outside #
Switch on the windscreen wipers. #
Press theà button. Switc
Switc
hing air
hing air -r
-recir
ecir culation mode
culation mode on/o.
on/o. #
Press theg button.
The interior air will be recirculated.
Air-recirculation mode automatical lyswitches to
fresh air mode aTer a while. %
If air-re circulation mode is switched on, the
wind ows may mist up more quickl y.Switch on
ai r-re circulation mode only brie0y. Switc
Switc
hes t
hes the r
he residual heat
esidual heat on/o.
on/o. R
R
eq
eq uir
uir ements:
ements:
R theve hicle is par ked.
It is possible tomake use of there sidual heat
from the engine tocontinue heating or ventilating
th e front compartment of theve hicle for appr ox-
imately 30 minutes, depending on thete mp era-
ture set. #
T
To activ
o activ at
ate:
e: press button Á.
Re sidual heat will be switched o. automaticall y. Switc
Switc
hing t
hing t he r
he residual heat in t
esidual heat in t he r
he rear
earon/o.
on/o. R
R
eq
equir uir ements:
ements:
R The vehicle is par ked.
When there sidual heat of the engine is activated
in there ar compartment, you can heat or ventila te Climate control
181
181

Switc
Switc
hing
hing o.
o.immediat
immediat ely
ely #
Press and hold the^ button.
Ov
Ov er
ervie
vie w of t
w of t he r
he remot
emot e contr
e contr ol display
ol display s (st
s (station-
ation-
ar
ar y heat
y heat er/v
er/ventilation)
entilation) 1
Stationary ventilation switched on
2 Stationary heater switched on
3 Selected departure time
4 Remaining time forth e stationary heater/
ve ntilation (in minutes)
5 Stationary heater/ ventilation active
6 Departure time activated
7 Signal strength Fu
rther possible displ ays:
R T
T ime:
ime: the activated departure time.
R Zer
Zero minut
o minut es:
es:theru nning time forth e station-
ary heater is extended because the engine has
not yetreached operating temp erature when it
is star ted.
R OFF:
OFF: the stationary heater/ventilation is
switched o..
Pr
Pr oblems wit
oblems wit h t
h the r
he r emot
emot e contr
e contr ol f
ol for t
or t he st
he st ation-
ation-
ar
ar y heat
y heat er/v
er/ventilation
entilation
F
F AIL
AIL ¨
¨appear
appear s on t
s on the r
he remot
emot e contr
e contr ol display
ol display
Po ssible cause:
R The signal transmission between the transmit-
te r and there ceiver is malfunctioning. #
Change your position in relation totheve hicle,
moving closer if necessar y.
F
F AIL appear
AIL appear s on t
s on the r
he remot
emot e contr
e contr ol display
ol display
Po ssible cause:
R The star ter battery is not su1ciently charge d. #
Char gethe star ter batter y. Po
ssible cause:
R The fuel tank is not su1cient ly/lled. #
Refuel at the nearest /lling station.
F
F AIL
AIL ¯
¯ appear
appear s on t
s on the r
he r emot
emot e contr
e contr ol display
ol display
Po ssible cause:
R There is a malfunction in the stationary heater. #
Have the stationary heater checked at a quali-
/ed specialist workshop. Air v
Air v
ents
ents A
A
djus
djusting t ting t he fr
he front air v
ont air v ents
ents &
W
WARNING
ARNING Risk of burns or frostbite due to
being too close tothe air vents
Ve ry hot or very cold air can 0ow from the air
ve nts. #
Make sure that all vehicle occupants
alw ays maintain a su1cient dis tance
from the air vents. 186
186
Climate cont
rol

#
T
To switc
o switc h on t
h on the pow
he pow er supply
er supply :
:press button
1 once.
Yo u can, forex ample, activate the windscreen
wiper.
The po wer supply is switched o. again if thefo l-
lowing conditions are met:
R you open the driver's door.
R you press button 1twice more. #
T
To switc
o switc h on t
h on the v
he vehicle:
ehicle: press button 1
twice.
Indicator and warning lamps go on in the
inst rument clus ter.
The vehicle is switched o. again if one of thefo l-
lowing conditions is met:
R you do not start theve hicle within 15 minutes
and the transmission is in position jorthe
electric parking brake is applied.
R you press button 1once. S S
t
tar
ar ting t
ting t he v
he vehicle
ehicle S
S
t
tar
ar ting t
ting t he v
he vehicle wit
ehicle wit h t
h the st
he st ar
art/st
t/st op butt
op butt on
on &
D
DAN
AN GER
GER Risk of fatal injuries caused by
ex haust gases
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Inhaling
th ese exhaust gases is hazardous tohealth
and leads topoisoning. #
Never lea vetheve hicle or, if present, the
stationa ryheater running in an enclosed
space without su1cient ventilation. &
W
WARNI NG
ARNI NGRisk of /re due to0ammable
material in the engine compartment or the
ex haust system
Flammable materials may ignite. #
Therefore, check regula rly th at there are
no 0ammable materials in the engine
compartment or on theex haust system. R
R
eq
eq uir
uir ements:
ements:
R theke y is in theve hicle and is recognised. #
ShiT the transmission toposition jori. #
Depress the brake pedal and press button 1
once. #
Ifth eve hicle does not start: switch o. non-
essential consumers and press but ton1
once. #
Ifth eve hicle still does not start and the dis-
play message Place the key in the marked
space See Owner's Manual appears inthe
inst rument displa y: starttheve hicle with the
ke y in the mar ked space (emer gency ope ra-
tion mode) (/ page 192).
% You can switch o. theve hicle while driving. To
do this, press button 1for about thre e sec-
onds or bypressing button 1thre e times
within thre e seconds. Be sure toobser vethe
saf ety no tes under "Driving tips"
(/ page 195).
Obser veany information rega rding display mes-
sages that can be displ ayed onthe inst rument
displa y. Driving and parking
191
191