MERCEDES-BENZ GLS SUV 2021 Owners Manual

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

Ov
Ov
er
ervie
vie w of t
w of t he r
he rear oper
ear oper ating unit
ating unit 1
Sets thete mp erature, leT
2 Sets the air distribution, leT
3 Sets climate control toautomatic mode
(/ page 180)
4 Sets the air0ow
5 Switches climate control on/o.
(/ page 179)
Switches residual heat on/o. (/ page 181)
6 Sets the air distribution, right
7 Sets thete mp erature, right
The settings forth e second and third row of seats
(equipment-dependent) can be made via there ar operating unit,
the multimedia system
(/ page 180) or the MBUX rear tablet depending
on theve hicle's equipment. Oper Oper
ating t
ating t he climat
he climat e contr
e control syst
ol system
em Switc
Switc
hing climat
hing climat e contr
e control
olon/o.
on/o. #
T
To switc
o switc h on:
h on:setthe air0ow toleve l 1 or
higher using theH button. #
T
To switc
o switc h
ho.:
o.: setthe air0ow toleve l 0 using
th eH button.
If climate control is switched o., the windo ws
may mist up more quickl y.Switch climate control
o. only brie0 y. Switc
Switc
hing t
hing t he climat
he climat e contr
e control in t ol in the r
he rear
earon/o.
on/o. #
Press button 5.
% When climate control in the second seat row
is switched o., the indicator lamp is activated
and OFF OFF is shown on there ar displ ay. Switc
Switc
hing t
hing t he A/C function
he A/C function on/o.
on/o. using t
using the air
he air
conditioning contr
conditioning contr ol panel
ol panel The A/C
function heats, cools and dehumidi/es
th eve hicle's interior air. #
Press theÁ button.
Switch o. the A/C function only brie0y; other-
wise, the windo wsmay mist up more quickl y.
Condensation may drip from the underside of the
ve hicle when cooling mode is active. This is not
indicati veof a fault. Calling up t
Calling up t
he air conditioning menu
he air conditioning menu Calling up t
Calling up t
he air conditioning menu using t
he air conditioning menu using t he
he
multimedia syst
multimedia syst em
em #
Select one of thete mp erature displa ysatthe
lo we r edge of the media displa y.
Calling up t
Calling up t he air
he air-conditioning menu using t
-conditioning menu using t he
he
butt
butt on on t
on on t he climat
he climat e contr
e control panel
ol panel #
Press the! button on the climate control
panel. Climate control
179
179

A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating t
ating the A/C function via t
he A/C function via t he
he
multimedia syst
multimedia syst em
emMultimedia system:
4 Climate menu 5
First row of seats
The A/C function heats, cools and dehumidi/es
th eve hicle's interior air. #
Select A/C. Se Se
tting climat
tting climat e contr
e control t
ol to aut
o aut omatic mode
omatic mode In automatic mode,
the set temp erature is con-
trolled and maintained at a constant le velby the
air suppl y. #
Press theà button. #
T To switc o switc h t
h to manual mode:
o manual mode: pressthe Ã
button.
In automatic mode, you can choose between /ve
di.erent air quantities using theH button.
Au tomatic mode is retained. A
A
ut
ut omaticall
omaticall y contr
y controlling t
olling the climat
he climat e contr
e control in
ol in
t
t he r
he r ear
ear In automatic mode,
the set temp erature is regula-
te dby thete mp erature of the dispensed air and
th e air0o w. #
Press theà button (/ page 179). Se
Se
tting t
tting t he air dis
he air distr tribution
ibution Multimedia system:
4 Climate menu #
Call up the air conditioning menu
(/ page 179). #
Select a row of seats. #
T
T o se
o se t t
t the air dis
he air dis tr
tr ibution:
ibution: select¯,P
or O. #
Set the air0o w.
% Several air distribution options can be selec-
te d at the same time, forex ample toset the
climate cont rolfo rth e windscreen and the
fo ot we lls simultaneousl y.
The ¯ climatecont rolfo rth e windscreen
can only be selected forth e /rst seat row. Se
Se
tting climat
tting climat e contr
e control fol for t
or t he r
he r ear passeng
ear passeng er
er
com
com par
partment (multimedia syst
tment (multimedia syst em)
em) Multimedia system:
4 Climate menu 5
Second row of seats
Se
Se tting t
tting t he t
he tem
emper
per ature
ature #
Select Second row of seats orThird row of
seats.
% Maybach vehicles are only /tted with one and
two rows of seats. #
Set thete mp erature.
Se
Se tting t
tting t he
heair0ow
air0ow #
Select Second row of seats orThird row of
seats.
% Maybach vehicles are only /tted with one and
two rows of seats. #
Set the air0o w.
Contr
Contr olling t
olling t he r
he rear climat
ear climat e contr
e control aut
ol automatically
omatically #
Select REAR AUTO.
Re ar climate cont rol is controlled automati-
call y. 180
180
Climate control

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

th
ere ar compartment for appr oximately
30 minutes. #
Press button 5(/ page 179). A
A
ctiv
ctiv ating/deactiv
ating/deactiv ating ionisation
ating ionisation Multimedia system:
4 Climate menu 5
Air quality
Ionisation impr ovesth equ ality of theve hicle's
interior air. Ionisation of the interior air is odour-
less. #
Select IONISATION and activate or deactivate
th e function. F F
r ragr
agr ance syst
ance syst em
em Se
Se
tting t
tting t he fr
he fragr
agrance syst
ance syst em
em
R
R eq
eq uir
uir ements:
ements:
R Automatic climate control is activated.
R The glo vecompartment is closed. Multimedia system:
4 Climate menu 5
Air quality
The frag rance system distributes a pleasant fra-
gr ance thro ughout theve hicle interior from a 0a-
con located in the glo vebox. #
Select AIR FRESHENER. #
Keep pressing until the desired intensity is
re ached.
Inser
Inser ting or r
ting or r emo
emoving t
ving t he
he0acon
0acon of t
of the fr
he fr agr
agrance
ance
syst
syst em
em &
W
WARNING
ARNING Risk of injury from liquid per-
fume
If ch ildren open the 0acon, they could drink
th e liquid perfume or it could come into con-
ta ct with their eyes. #
Do not lea vechildren unattended in the
ve hicle. #
Consult a doctor immediately if liquid
perfume has been drunk. #
If liquid perfume comes into contact with
your eyes or skin, rinse your eyes with
clean water. #
If sym ptoms continue, consult a doctor. +
ENVIR ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
damage due toimproper disposal of full
0acons Fu
ll 0acons must not be disposed of
with household waste. #
Fu
ll 0acons must be take nto a
harmful subs tance collection point. 182
182
Climate cont
rol

1
Cap
2 Flacon #
T
To insert
o insert: :slide the 0acon into the holder as far
as it will go. #
T
To r
o r emov
emov e:
e:aTer opening the glo vebox, wait
fo r appr oximately se ven seconds and pull out
th e 0acon. If
yo u do not use genuine Mercedes-Benz interior
perfumes, obser vethe manufacturers' saf ety noti-
ces on the perfume pac kaging.
Dispose of thege nuine Mercedes-Benz interior
perfume 0acon when it is em pty and do not re/ll
it.
R R e/llable
e/llable 0acon
0acon #
Unscr ewthe cap of the em pty 0acon. #
Fillth e 0acon with a maximum of 15 ml. #
Screw the cap back on tothe 0acon.
Alw aysre /ll the em ptyre /llabl e0acon with the
same perfume. Obser vethe separate information
sheet with the 0acon. Inf
Inf
or
ormation on t
mation on t he windscr
he windscreen heat
een heater
er The windscreen heater is switched on automati-
cally if
the¬ button is activated.
In addition, it is automatically switched on when
necessar y. S S
t
tationar
ationar y heat
y heater/v
er/ventilation
entilation S
S
t
tationar
ationar y heat
y heater/v
er/ventilation function
entilation function
% The following function is equipment-depend-
ent.
R The air inside theve hicle is heated or ventila-
te dto the set temp erature.
R The air inside theve hicle cann otbe cooled
down to temperatures below the outside tem-
perature.
R Ifth e outside temp erature changes, ventilation
mode automatically switches toheating mode
or heating mode automatically switches to
ve ntilation mode.
The stationary hea ter and theex haust gas outl et
are situated behind theright-hand front wheel.
Switc
Switc hing t
hing t he st
he stationar
ationar y heat
y heater/v
er/ventilation
entilation on/o.
on/o.
via t
via t he oper
he oper ating unit
ating unit &
D
DAN
AN GER
GER Risk of fatal injury due topoison-
ous exhaust gases
If th eta ilpipe is bloc ked or su1cient ventila-
tion is not possible, poisonous exhaust gases Climate cont
rol
183
183

such as carbon monoxide may enter
theve hi-
cle. This is the case in enclosed spaces or if
th eve hicle gets stuck in sno w,forex ample. #
Always switch the stationary heater o. in
enclosed spaces without an air extrac-
tion system, e.g. in garage s. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
ve hicle or the stationary heater is run-
ning. #
Open a wind owonthe side of theve hicle
fa cing away from the wind toensure an
adequate supply of fresh air. &
W
WARNING
ARNING Risk of /re due tohot station-
ary heater components and exhaust gases
Flammable materials such as lea ves, grass or
twigs may ignite. #
When the stationary heater is switched
on, make sure that:
R hot vehicle parts do not come into
contact with 0ammable materials. R
theex haust gas can 0ow out of the
stationa ryheater exhaust pipe unhin-
dered.
R theex haust gas does not come into
contact with 0ammable materials. *
N
NOOTE
TE Bat tery dischar gecaused bysta-
tionar y heater or stationaryventilation
ope ration Operating
the stationary heater or stationary
ve ntilation drains the batter y. #
ATer heating or ventilating theve hicle
twice, drive for a longer period of time. R
R
eq
eq uir
uir ements:
ements:
R The fuel tank is su1cient lyfull.
% Please no tethat if theta nk /ll le vel is too lo w,
it can result in function restrictions du ring
auxilia ryheating operation. #
Set the desired temp erature using thew
button. #
Press the& button.
The red or blue indicator lamp on the&
button will light up or go out.
Indicator lamp colours:
R Blue:
Blue: stationary ventilation is switched on.
R R
Red:
ed: the stationary heater is switched on.
R Y
Yello w:
ello w:the departure time has been preselec-
te d.
The stationary heater/ventilation will switch o.
automatically aTer 50 minutes.
Oper Oper ation using t
ation using t he app:
he app:the stationary heater/
ve ntilation can also be ope rated via the Mercedes
me connect app. You can /nd fur ther information
in the separate Owner's Manual at https://
moba.i.daimler.com/mar kets/ece-r ow/baix/
ca rs/connectme/en_GB/#em otions/
St artsei te.html. 184
184
Clima
tecont rol

Se
Se
tting t
tting t he st
he stationar
ationar y heat
y heater/v
er/ventilation via t
entilation via t he
he
multimedia syst
multimedia syst em
em
Multimedia system:
4 Climate menu 5
Auxiliary heating #
Call up the air conditioning menu
(/ page 179). #
Select Auxiliary heating .
Selecting t
Selecting t he depar
he departur
ture time
e time #
Select the time TIME A: XX, TIME B: XXor
TIME C: XX.
Se
Se tting t
tting t he depar
he depar tur
ture time
e time #
Select the time TIME A: XX, TIME B: XXor
TIME C: XX. #
Select the pen beside the time. #
Set a time.
Se
Se tting t
tting t he st
he stationar
ationar y heat
y heater/v
er/ventilation via
entilation via
r
r emot
emot e contr
e contr ol
ol
R
R eq
eq uir
uir ements:
ements:
R The fuel tank is su1cient lyfull. Switc Switc
hing on immediat hing on immediat ely
ely #
Press and hold theu button.
Se
Se tting t
tting t he depar
he depar tur
ture time
e time #
Brie0y press theu button. #
Press the, or. button repeatedly
until the time tobe changed appears on the
displa y. #
Press theu and^ buttons simultane-
ousl y.
The Îsymbol on there mo tecont rol display
will 0ash. #
Press the, and. buttons toset the
desired departure time. #
Press theu and^ buttons simultane-
ousl y.
The new departure time will be stored.
Up tothre e departure times can be stored. #
T
To activ
o activ at
ate t
e t he depar
he depar tur
ture time:
e time: selectthe
desired departure time and press and hold
th eu button.
The Ísymbol, the departure time and,
depending on the selected departure time, the
letter A A, B , B or CCwill appear on the displa y. #
T
To deactiv
o deactiv at
ate t
e t he depar
he depar tur
tur e time:
e time: selectthe
desired departure time and press and hold
th e^ button.
OFF
OFF will appear on the displa y. #
T
To c
o c hec
hec k t
k the st
he st atus of t
atus of t he activ
he active st
e stationar
ationar y
y
heat
heat er
er:
:brie0y press theu button. Climate control
185
185

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

#
If necessar y,direct the air0ow toano ther
area of theve hicle interior. To
guarantee the 0ow of fresh air thro ugh the air
ve nts into theve hicle interior, comply with thefo l-
lowing:
R Alwayske ep theve nts and ventilation grilles in
th eve hicle interior clear.
R Keep the air inlet free of deposits
(/ page 371).
R Optimum climate comfort is achie ved with the
air vents in the centre position. #
T
To open or close centr
o open or close centr e air v
e air vents:
ents:turn control-
ler 2 up or down as far as it will go. #
T
To open or close side air v
o open or close side air v ents:
ents:turn control-
ler 2 tothe leT or right as far as it will go. #
T
To adjus
o adjust t t the air dir
he air dir ection:
ection:hold air vent 1 in
th e centre and mo veit up or down or tothe
leT or right.
A
A djus
djusting t ting t he r
he rear air v
ear air v ents
ents Air
vents in the centre console Air
vents in the B-pillar Climate control
187
187