2021 MERCEDES-BENZ GLS SUV cooling

opened when
thero of luggage rack is /t-
te d. #
Position the load on thero of luggage
ra ck in such a wayth at theve hicle will
not sus tain damage even when it is in
motion. *
N
NOOTE
TE Damage tothe panorama sliding
sunroof due tonon-appro vedro of luggage
ra cks The panorama sliding sunroof may be dam-
aged bythero of luggage rack ifyo u attem ptto
open it when using a roof luggage rack not
te sted and appro vedfo r Mercedes-Benz. #
When a roof luggage rack is /t ted, open
th e panorama sliding sunroof only if this
has been tested and appro vedfor
Mercedes-Benz.
The pano rama sliding sunroof may be raised
to allow ventilation of theve hicle interior. No
tes on driving with a roof load
R Evenly dist ribute thero of load, and place
heavy objects at the bottom. Also comply with
th e no tes on loading theve hicle
(/ page 135).
R Drive attentivel y,and avoid suddenly pulling
awa y,braking and steering as well as rapid
cornering.
R When transporting roof loads and when the
ve hicle is fully loaded or fully occupied, select
drive prog rams ; andA. These are
designed tofocus on stability (/ page 205). #
Secu rethero of luggage rack tothero of rail-
ing. #
Obser vethe manufacturer's installation
inst ructions. Cup holders
Cup holders
Switc
Switc
hing t
hing t he cooling or heating function f
he cooling or heating function f or t
or the
he
t
t em
em per
per atur
atur e-contr
e-contr olled cup holder on or
olled cup holder on or o.
o. &
W
WARNING
ARNING Risk of injury bytouching the
heating elements
The cup holder's heating elements may be
ve ry hot.
Yo u can burn yourself on them. #
Do not touch the cup holder's hot heat-
ing elements. #
Ensure that no children can access the
cup holder's hot heating elements. #
Never lea vechildren unattended in the
ve hicle. *
N NOOTE
TE Damage toobjects in thete mp era-
ture-controlled cupholder If
yo u place objects into thete mp erature-con-
trolled cup holder, they may become dam-
aged. 150
150
Seats and st
owing

#
Insert the plug of the device into 230 V soc ket
1 .
When the on-board electrical system voltage is
su1cient, indicator lamp 2lights up. Ov
Ov
er
ervie
vie w of USB por
w of USB por ts
ts Depending on
theve hicle equipment, theve hicle
has thefo llowing USB ports:
R inthe st owage compartment of the cockpit
armrest (/ page 138)
R inthe front centre console next tothe mobile
phone st owage compartment
R inthere ar cent reconsole
R vehicles with Rear Comfort Package: in the
cent rearmrest of the second row of seats in
th ere ar compartment
R Mercedes-Maybach vehicles with 5 seats in
th ere ar compartment: in the centre armrest
in there ar compartment
R Mercedes-Maybach vehicles with individual
re ar seats: in the centre console of there ar
compartment R
vehicles with thre ero ws of seats: totheright
and leT next tothe seat
If th eve hicle is switched on you can charge USB
devices, e.g. mobile phones, at USB ports. The
ch arging voltage is appr oximately 5 V (up to3 A). Coolbox Coolbox
Using t
Using t
he r
he refr
efrig
iger
er at
ator box
or box &
W
WARNING
ARNING Risk of /re due toa co vered
ve ntilation grille on the coolbox
If yo u co verth eve ntilation grille forth e cool-
box, it may overheat. #
Always make sure that theve ntilation
gr ille is not co vered. The
vent grille forth ere frigerator box is in the
boot.
This equipment is available only for Mercedes-
Maybach vehicles.
The refrigerator box can bear a maximum load of
3.5 kg. St
ore only plastic bottles in the upper compart-
ment of there frigerator box. The contents of the
bottle must be no more than 0.5 lit res.
If yo u do not need touse there frigerator box for
an extended period, switch it o., defrost it and
clean it. ATer doing so, lea vethe lid open for a
time.
More condensation may occur during intensive
use. Cleaning may be requ ired.
The refrigerator box will reduce its cooling capa-
city or switch o. in thefo llowing cases:
R Too many electrical consumers are turned on.
R The star ter battery is not su1ciently charge d.
If th is is the case, the indicator lamps will 0ash on
th e button for switching there frigerator box on
and o.. The cooling function will au tomatically
switch back on as soon as there is su1cient volt-
age.
% Toinstall there frigerator box in the load com-
partment or remo veit, please contact a quali-
/ed specialist workshop. 154 154
Seats and st
owing

Example:
vehicles with individual rear seats #
Vehicles with 5-seater variant: fold down the
re ar armrest. #
Pull handle on st owage box 1and fold down
th e co ver of st owage box 2. Example:
vehicles with individual rear seats #
T
To open:
o open: pullthe handle on refrigerator box
1 and fold down the co ver of there frigerator
box. #
T
To switc
o switc h on:
h on:press but ton2 repeatedly until
an indicator lamp (low cooling) lights up or two
indicator lamps (high cooling) light up. #
T
To switc
o switc h
ho.:
o.: press button 2repeatedly until
bo th indicator lamps go out. W
W
ir
ireless c
eless c har
harging of t
ging of t he mobile phone and con-
he mobile phone and con-
nection wit
nection wit h t
h the e
he e xt
xter
er ior aer
ior aer ial
ial N
No
ot
tes on wir
es on wir elessl
elessly c
y c har
har ging t
ging t he mobile phone
he mobile phone &
W
WARNING
ARNING Risk 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 recep tacles cann otalw aysreta in all
objects within.
There is a risk of injur y,particular lyin the
eve nt of sudden braking or a sudden change
in direction. #
Always st owobjects so that they cann ot
be thro wn around in such situations. Seats and st
owing
155 155

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

S
S
t
tar
ar ting t
ting t he v
he vehicle wit
ehicle wit h t
h the ke
he key in t
y in t he mark
he mark ed
ed
space (emerg
space (emerg ency oper
ency operation mode)
ation mode)
If th eve hicle does not start and thePlace the
key in the marked space See Owner's Manual
message appears in the inst rument displa y,you
can start theve hicle in emer gency ope ration
mode. #
Make sure that the mar ked space 2is
em pty. #
Remo vetheke y1 from theke yring. #
Place theke y1 inthe mar ked space 2next
to the symbol 3.
The vehicle will start aTer a short time.
When youre mo vetheke y1 from the mar ked
space 2,theve hicle can be driven. For fur-
th er engine starts ho wever,theke y1 must
be located in the mar ked space 2next tothe
symbol 3during the entire journe y. #
Have theke y1 checked at a quali/ed spe-
cialist workshop.
If t If t he v
he v ehicle does no
ehicle does no t st
t start:
art: #
Place theke y1 inthe mar ked space 2and
lea veitth ere. #
Depress the brake pedal and start theve hicle
using the start/s top button.
% You can switch on the po wer supply or the
ve hicle with the start/s top button.
Obser veany information rega rding display mes-
sages that can be displ ayed on the inst rument
displa y. S
S
t
tar
ar ting t
ting t he v
he vehicle via R
ehicle via R emot
emote Online Ser
e Online Ser vices
vices Cooling or heating t
Cooling or heating t
he v
he vehicle int
ehicle int er
erior bef
ior bef ore
ore
st
st ar
ar ting t
ting t he jour
he jour ney
ney
Ensu rethefo llowing before starting the engine:
R The legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone.
R It is safe tostart and runth e engine where
yo ur vehicle is par ked.
R The fuel tank is su1cient lyfull.
R The star ter battery is su1ciently charge d.
Char
Char ging t
ging t he st
he start
arter batt
er batt er
ery bef
y bef or
ore st
e st ar
arting t
ting t he
he
jour
jour ney
ney
Yo u can receive a message on your smartphone
when the state of charge ofthe star ter battery is
lo w. You can then start theve hicle with the smart-
phone tocharge the batter y.The vehicle is auto-
matically switched o. aTer ten minutes.
Ensure thefo llowing before starting the engine:
R The legal stipulations in the area where your
ve hicle is par ked allow engine starting via
smartphone. 192
192
Driving and parking

Oper
Oper
ation wit
ation wit h a tr
h a trailer or bicy
ailer or bicy cle r
cle rack
ack
If transport equipment, forex ample a trailer or
bicycle rack , is attached tothe trailer hitch and
th e electrical connection has been cor rectly
es tablished:
R In drive prog ram F andG, theve hicle
adopts the normal le vel starting from a speed
of 30 km/h.
R In all other drive prog rams, theve hicle
re mains at normal le vel ir respecti veof speed.
Syst
Syst em limits
em limits
AIRMATIC may not be available or ha veonly limi-
te dav ailability in thefo llowing cases:
R The overheating pr otection has been activated
due tofrequent le velch anges within a short
time. The Áwarning lamp appears in the
multifunction displa y.
ATer the cooling phase, the system is again
av ailable without restriction. Se
Se tting t
tting t he v
he vehicle lev
ehicle lev el (v
el (vehicles wit
ehicles wit h AIRMA
h AIRMATIC)
TIC) &
W
WARNING
ARNING Risk of accident because vehi-
cle le vel is too high
Driving characteristics may be impaired.
The vehicle can driT out wards, forex ample,
when steering or cornering. #
Choose a vehicle le vel which is suited to
th e driving style and thero ad sur face
conditions. &
W
WARNING
ARNING Risk of ent rapment from vehi-
cle lo wering
When lo wering theve hicle, other people could
become trapped if their limbs are between the
ve hicle body and the tyres or underneath the
ve hicle. #
Make sure no one is underneath the
ve hicle or in the immediate vicinity of the
wheel ar ches when theve hicle is being
lo we red. &
W
WARNING
ARNING Risk of becoming trapped due
to theve hicle lo wering
V
V ehicles wit
ehicles wit h AIRMA
h AIRMATIC or lev
TIC or lev el contr
el control:
ol:when
yo u unload luggage or lea vetheve hicle, the
ve hicle /rst rises slightly and then returns to
th e set le vel shortly aTer wards.
Yo u or an yone else in the vicinity of the wheel
ar ch es or the underbody could thus become
trapped.
The vehicle can also be lo wered aTer being
loc ked. #
When leaving theve hicle, make sure that
nobody is in the vicinity of the wheel
ar ch es or the underbody. *
N NOOTE
TE Damage due tovehicle lo wering Pa
rts of the body could be damaged when the
ve hicle is lo wered. #
Make sure that there are no obstacles
such as kerbs underneath or in the
immediate vicinity of the body when the
ve hicle is being lo wered. Driving and parking
269
269

-
Athttps://be vo.mercedes-benz.com
- Inthe Mercedes-Benz BeVo App
R Ataqu ali/ed specialist workshop *
N
NO OTE
TE Overheating at high outside tempe r-
atures If an inappropriate coolant is used,
the engine
cooling system is not su1ciently pr otected
against overheating and cor rosion at high out-
side temp eratures. #
Only use coolant appr ovedby Mercedes-
Benz. #
Obser vethe inst ructions in the
Mercedes-Benz Speci/cations for Oper-
ating Fluids 320.1. Ha
ve the coolant regula rly re placed at a quali/ed
specialist workshop.
Proportion of antif reeze concentrate in the engine
cooling system:
R A minimum of 50% (antifreeze pr otection down
to about -37°C) R
A maximum of 55% (antif reeze pr otection
down to-45°C) N
No
ot
tes on windscr
es on windscr een w
een washer
asher 0uid
0uid Obser
vethe no tes on operating 0uids
(/ page 425). &
W
W ARNING
ARNING ‑ Risk of /re and injury due to
windscreen washer concent rate
Wi ndsc reen washer concent rate is highly 0am-
mable. It could ignite if it comes into contact
with hot engine component parts or the
ex haust system. #
Make sure that no windscreen washer
concent rate spills out next tothe /ller
opening. *
N NOOTE
TE Damage totheex terior lighting due
to unsuitable windscreen washer 0uid Unsuitable windscreen
washer 0uids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer 0uids which
are also suitable for use on plastic sur fa-
ces, e.g. MB SummerFit or MB WinterFit. *
N
NOOTE
TE Bloc ked spr aynozzles caused by
mixing windscreen washer 0uids #
Do not mix MB SummerFit and MB Win-
te rFit with other windscreen washer 0u-
ids. Do not use distilled or de-ionised
water. Other-
wise, the /ll le vel sensor may be triggered er rone-
ous ly.
Re commended windscreen washer 0uid:
R abo vefreezing point: e.g. MB SummerFit
R below freezing point: e.g. MB WinterFit
Fo rth e cor rect mixing ratio, referto the informa-
tion on the antifreeze container.
Mix washer 0uid with windscreen washer 0uid all
ye ar round. Te
ch nical data
433
433

*Depending on
the tyre size
Maximum gr
Maximum gradient climbing ability
adient climbing ability
The vehicle's gradient climbing ability depends on
th ewe ight distribution in theve hicle, thete rrain
conditions and thero ad sur face conditions.
The speci/ed value applies when:
R theve hicle is ready todrive – fuel tank full, all
0uids topped up, with driver
R the LLO
O W RAN
W RAN GE
GEo.-road gear of the transfer
case is engaged
R thero ad sur face conditions and thus the trac-
tion are good
A gradient climbing ability of 100% cor responds to
an incline of 45°.
Obser vethe no tes on driving in moun tainous ter-
ra in (/ page 198). Gr
Gr adient climbing ability
adient climbing ability Model
Model
Maximumgr
Maximum gradi-
adi-
ent climbing abil-
ent climbing abil- ity
ity
V
V ehicles wit
ehicles wit hout
houtO.-r
O.-road
oad
pack
pack ag
age
e 80%
V
V ehicles wit
ehicles wit h
hO.-r
O.-r oad
oad
pack
pack ag
age
e
When LOW RANGE o.- road
ge ar is engaged 100% Gr
Gr
adient climbing ability (Mer
adient climbing ability (Mer cedes‑Ma
cedes‑Maybac
ybach)
h) Model
Model
Maximumgr
Maximum gradi-
adi-
ent climbing abil-
ent climbing abil- ity
ity
Mercedes-Maybach GLS
480
Mercedes-Maybach GLS
600 4MATIC 80% T T
r
railer hitch
ailer hitch Gener
Gener
al not
al notes on t
es on t he tr
he trailer hitch
ailer hitch Modi/cations
tothe engine cooling system may
be necessar y,depending on theve hicle model.
The retro/tting of a trailer hitch is on lypermissi-
ble if a towing capacity is speci/ed in your vehicle
documents.
Fu rther information can be obtained at a quali/ed
specialist workshop. 438 438
Te
ch nical data