2021 MERCEDES-BENZ GLS SUV Owners Manual

Low
Low
er
ering t
ing t he v
he vehicle
ehicle aTer
aTera wheel c
a wheel c hange
hange R R
eq eq uir
uir ements:
ements:
R The new wheel has been /t ted (/page 413).
Obser vethe information on tyre pressure
(/ page 401). #
Place thera tchet ring spanner onto the he xa-
gon nut of the jack so that the lettering "AB" is
visible. #
T
To low
o low er t
er the v
he v ehicle:
ehicle: turnthera tchet ring
spanner of the jack anti-clockwise. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated 1to5 with a
maximum of 80 Nm. #
Then tighten the wheel bolts evenly in a diago-
nal pattern in the order indicated 1to5 to
th e speci/ed tightening torque of 150 Nm. &
W
WARNING
ARNING Risk of inju rythro ugh incor rect
tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened tothe
prescribed tightening torque. #
Makesure the wheel bolts or wheel nuts
are tightened tothe prescribed tighten-
ing torque. #
Ifyo u are not sure, do not mo vetheve hi-
cle. Consult a quali/ed specialist work-
shop and ha vethe tightening torque
ch ecked immediatel y. #
Check the tyre pressure of the ne wlymounted
wheel and adjust according ly.%
The following does not apply if the new wheel
is an emer gency spa rewheel. #
V
Vehicles wit
ehicles wit h a tyr
h a tyre pr
e pr essur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: restart the tyre pressure monitoring sys-
te m (/ page 404). Emerg
Emerg
ency spar
ency spar e wheel
e wheel N
No
ot
tes on t
es on t he emerg
he emerg ency spar
ency spar e wheel
e wheel &
W
WARNING
ARNING Risk of accident caused by
incor rect wheel and tyre dimensions
The wheel or tyre size and the tyre type of the
emer gency spa rewheel or spare wheel and
th e wheel tobe replaced may di.er. The emer-
ge ncy spa rewheel or spare wheel can signi/-
cantly impair driving characteristics of the
ve hicle.
To prev ent hazardous situations: #
Drive carefull y. #
Never /t more than one emer gency
spa rewheel or spare wheel that di.ers
in size. 414
414
Wheels and tyres

#
Only use an emer gency spa rewheel or
spare wheel brie0y. #
Do not deacti vate ESP ®
. #
Have the emer gency spa rewheel or
spare wheel of a di.erent size replaced
at the nearest quali/ed specialist work-
shop. The new wheel must ha vethe cor-
re ct dimensions. %
The emer gency spa rewheel is fastened in the
load compartment under the load compart-
ment 0oor.
% Not for Mercedes-Maybach vehicles.
Obser vethefo llowing no tes on /tting an emer-
ge ncy spa rewheel:
R The maximum permissible speed with an
emer gency spa rewheel /tted is 80 km/h.
R Do not /t the emer gency spa rewheel with
snow chains.
R Replace the emer gency spa rewheel aTer six
ye ars at the latest, rega rdless of wear. R
Check the tyre pressure of the emer gency
spa rewheel /tted. Cor rect the pressure as
necessar y.
% The speci/ed tyre pressure is stated on the
label of the emer gency spa rewheel.
% V
V ehicles wit
ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: if an emer gency spa rewheel is /tted, the
tyre pressure monitoring system cannot func-
tion reliabl y.Fo r a few minutes aTer an emer-
ge ncy spa rewheel is /tted, the system may
still display the tyre pressure of there mo ved
wheel. Only restart the system again when the
emer gency spa rewheel has been replaced
with a new wheel.
Be sure toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 401)
R Tyre pressure table (/ page 402)
R Notes on /tting tyres (/ page 404)
R Fitting an emer gency spa rewheel
(/ page 409) In0ating In0ating
t
the emerg
he emerg ency spar
ency spar e wheel
e wheel *
N
NOOTE
TE Overheating due tothe tyre in0ation
compressor running too long #
Do not runth e tyre in0ation compressor
fo r longer than ten minutes without inter-
ru ption. R
R
eq
eq uir
uir ements:
ements:
The emer gency spa rewheel has been /tted cor-
re ctl y. ( / page 409)
Comply with the manufacturer's saf ety no tes on
th e stic ker of the emer gency spa rewheel and on
th e tyre in0ation compressor. #
Remo vethe stic ker with the label 80 km/h
from the tyre in0ation compressor housing
and a1x it tothe inst rument clus ter within the
driver's /eld of vision. #
Remo vethe tyre in0ation compressor from the
st ow age space under the luggage compart-
ment 0oor . (/ page 383) Wheels and tyres
415
415

#
Pull /ller hose 1and plug 3out of the tyre
in0ation compressor housing. #
Insert plug 7of /ller hose 1inthe soc ket
on the tyre in0ation compressor and then turn
it until plug 7engages. #
Unscr ewthe cap from theva lve on the emer-
ge ncy spa rewheel. #
Screw union nut 2of /ller hose 1onto the
va lve. #
Make sure on and o. switch 4ofthe tyre
in0ation compressor is set to 00. #
Insert plug 3in a soc ket in your vehicle.
R Cigar ette lighter soc ket R
12 V soc ket: ( / page 152)
R Obser vethe no tes on the cigar ette lighter in
th e Digital Owner's Manual
R Obser vethe no tes on soc kets: (/ page 152) #
Press the start/s top button once toswitch on
th e po wer supply (/ page 190). #
Press on and o. switch 4onthe tyre in0a-
tion compressor to II.
The tyre in0a tion compressor is switched on.
The tyre is in0ated. The tyre pressure appears
on manom eter 5. #
Pump the tyre tothe speci/ed tyre pressure.
% The speci/ed tyre pressure is stated on the
label of the emer gency spa rewheel. #
When the speci/ed tyre pressure has been
re ached, press on and o. switch 4onthe
tyre in0ation compressor to 00.
The tyre in0a tion compressor is switched o.. #
Press the start/s top button toswitch o. the
po we r suppl y. #
Ifth e tyre pressure is higher than the speci/ed
pressure, press pressure release valve button 6
until the cor rect tyre pressure has been
re ached. #
Unscr ewunion nut 2of /ller hose 1from
th eva lve. #
Screw theva lve cap of the emer gency spa re
wheel onto theva lve again. #
Stow /ller hose 1and plug 3inthe lo wer
section of the tyre in0ation compressor hous-
ing. #
Stow the tyre in0ation compressor in theve hi-
cle. Collapsible spar
Collapsible spar
e wheel
e wheel N
No
ot
tes on t
es on t he collapsible spar
he collapsible spar e wheel
e wheel &
W
WARNING
ARNING Risk of accident caused by
incor rect wheel and tyre dimensions
The wheel or tyre size and the tyre type of the
emer gency spa rewheel or spare wheel and
th e wheel tobe replaced may di.er. The emer-
ge ncy spa rewheel or spare wheel can signi/-
cantly impair driving characteristics of the
ve hicle. 416
416
Wheels and tyres

To
prev ent hazardous situations: #
Drive carefull y. #
Never /t more than one emer gency
spa rewheel or spare wheel that di.ers
in size. #
Only use an emer gency spa rewheel or
spare wheel brie0y. #
Do not deacti vate ESP ®
. #
Have the emer gency spa rewheel or
spare wheel of a di.erent size replaced
at the nearest quali/ed specialist work-
shop. The new wheel must ha vethe cor-
re ct dimensions. The collapsible spare wheel is an emer
gency
spa rewheel which is only suitable for use for a
limited period of time and in a restric ted manner
in theev ent of a 0at tyre (e.g. until the nearest
wo rkshop).
The tyre side walls are folded when in transport
mode. Before use, the collapsible spare wheel has
to be in0a tedwith the accompanying compressor. Check
the tyre pressure of the collapsible spare
wheel once /t ted. Cor rect the pressure as neces-
sar y.
The maximum permissible speed with a collapsi-
ble spa rewheel /tted is 80 km/h.
Do not /t the collapsible spare wheel with snow
ch ains.
Re place the collapsible spare wheel aTer six years
at the latest, rega rdless of wear.
% V
V ehicles wit ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: if a collapsible spare wheel is /tted the
tyre pressure monitoring system cannot func-
tion reliabl y.Fo r a few minutes aTer an emer-
ge ncy spa rewheel is /tted, the system may
still display the tyre pressure of there mo ved
wheel. Only restart the system again when the
collapsible spare wheel has been replaced
with a new wheel.
Be sure toalso obser vethefo llowing fur ther rela-
te d subjects:
R Notes on tyre pressure (/ page 401)
R Tyre pressure table (/ page 402) N
No ot tes on v
es on v ehicles wit
ehicles wit h a Bur
h a Burmest
mester sound syst
er sound syst em
em &
W
WARNING
ARNING Risk of inju ryor death due to
an unsecured collapsible spare wheel
If th e collapsible spare wheel is not secured
cor rectl y,it can slip, tip over or be thro wn
around.
This can seriously injure vehicle occupants. #
Always store the collapsible spare wheel
in the emer gency spa rewheel bag and
attach it tothe brac ket in the load com-
partment. #
Always ensu rethat the lashing straps on
th e emer gency spa rewheel bag are
safely secured on there ar tie-down eyes
on the load compartment 0oor. Depending on
theve hicle's equipment, the col-
lapsible spare wheel is located in an emer gency
spa rewheel bag on a brac ket in the load compart-
ment. The collapsible spare wheel in the emer-
ge ncy spa rewheel bag and the brac ket are lashed
with straps and secured using there ar tie-down
ey es on the load compartment 0oor. Wheels and tyres
417 417

R
R
emo
emo ving t
ving t he collapsible spar
he collapsible spar e wheel
e wheelV V
ehicles wit ehicles wit hout a Bur
hout a Burmest
mester sound syst
er sound syst em
em
The collapsible spare wheel is located under the
load compartment 0oor. #
Obser vethe information on mounting tyres
(/ page 404). #
Open theta ilgate. #
Open the load compartment 0oor. #
Remo vethe collapsible spare wheel.
V
V ehicles wit
ehicles wit h a Bur
h a Burmest
mester sound syst
er sound syst em
em
The collapsible spare wheel is secured in the col-
lapsible spare wheel bag in the load compart-
ment. #
Obser vethe information on mounting tyres
(/ page 404). #
Open the load compartment. #
Loosen the lashing straps. #
Unhook thereta ining spring hooks of the lash-
ing straps from the brac kets. #
Remo vethe collapsible spare wheel bag
to get her with the collapsible spare wheel. #
Open the collapsible spare wheel bag and
re mo vethe collapsible spare wheel.
Mer
Mer cedes‑Ma
cedes‑Ma ybac
ybach v
h vehicles
ehicles
W
W it
ithout r
hout r efr
efrig
iger
er at
ator bo
or bo x:
x:the collapsible spare
wheel is located in the collapsible spare wheel
bag on the load compartment 0oor. #
Obser vethe information on mounting tyres
(/ page 404). #
Open the load compartment. #
Loosen the lashing straps. #
Unhook thereta ining spring hooks of the lash-
ing straps from the brac kets. #
Remo vethe collapsible spare wheel bag
to get her with the collapsible spare wheel. #
Open the collapsible spare wheel bag and
re mo vethe collapsible spare wheel.
W
W it
ith r
h r efr
efr ig
iger
er at
ator bo
or bo x:
x:the collapsible spare wheel
is located in the collapsible spare wheel bag
inside the open load compartment 0oor. #
Obser vethe information on mounting tyres
(/ page 404). #
Open the load compartment. #
Loosen the lashing straps. #
Unhook thereta ining spring hooks of the lash-
ing straps from the brac kets. #
Remo vethe collapsible spare wheel bag
to get her with the collapsible spare wheel. #
Open the collapsible spare wheel bag and
re mo vethe collapsible spare wheel. In0ating In0ating
t the collapsible spar
he collapsible spar e wheel
e wheel R
R
eq
eq uir
uir ements:
ements:
R Mount the collapsible spare wheel as descri-
bed (/ page 413).
R Remo vethe tyre in0ation compressor from the
st ow age space under the luggage compart-
ment 0oor (/ page 383).
* NO
NO TE
TEDamage tothe collapsible spare
wheel when lo wering theve hicle Lo
we ring theve hicle without pr eviously in0at-
ing the collapsible spare wheel can damage its
ri m. 418
418
Wheels and tyres

#
In0ate the collapsible spare wheel using
th e tyre in0ation compressor before lo w-
ering theve hicle. *
N
NO OTE
TE Overheating due tothe tyre in0ation
compressor running too long #
Do not runth e tyre in0ation compressor
fo r longer than ten minutes without inter-
ru ption. #
Pull connector 4and the hose out of the
housing. #
Unscr ewthe cap from theva lve on the col-
lapsible spare wheel. #
Screw union nut 1ofthe hose onto the
va lve. #
Make sure on and o. switch 3ofthe tyre
in0ation compressor is set to 00. #
Insert connector 4into the cigar ette lighter
soc ket or into a 12 V soc ket (/ page 152) in
yo ur vehicle. #
Switch on the po wer supply (/ page 190). #
Press on and o. switch 3onthe tyre in0a-
tion compressor to II.
The tyre in0a tion compressor is switched on.
The tyre is in0ated. The tyre pressure is shown
on manom eter 2. #
Pump the tyre tothe speci/ed tyre pressure.
% The speci/ed tyre pressure is printed on the
ye llow label of the collapsible spare wheel. #
When the speci/ed tyre pressure has been
re ached, press on and o. switch 3onthe
tyre in0ation compressor to 00. #
Ifth e tyre pressure is higher than the speci/ed
pressure, press pressure release valve button
5 until the cor rect tyre pressure has been
re ached. Wheels and tyres
419 419

N
N
o
ot
tes on t
es on t ec
echnical data
hnical data
* NO
NOTE
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. The
tech nical data was de term ined in accordance
with EU Directives. The data stated only applies to
ve hicles with standard equipment. You can obtain
fur ther information from a Mercedes-Benz Service
Centre.
Onl Onl y f
y for cert
or cert ain countr
ain countr ies:
ies:you can /n dvehicle-
speci/c vehicle data in theCO C documents (CER-
TIFIC ATE OF CONFORMITY). These documents
are deli vered with your vehicle. On-boar
On-boar
d electr
d electronics
onics N
No
ot
tes on t
es on t am
amper
per ing wit
ing wit h t
h the engine electr
he engine electr onics
onics *
N
NOOTE
TE Prematu rewe arthro ugh improper
maintenance Improper maintenance may cause
vehicle
components towe ar more quickly and the
ve hicle's operating permit may be in validated. #
Always ha veworkon the engine elec-
tronics and related components car ried
out at a quali/ed specialist workshop. T
T
w
w o-wa
o-wa y r
y radios
adios N
No
ot
tes on
es on /tting
/tting tw
two-wa
o-wa y r
y radios
adios &
W
WARNING
ARNING Risk of accident due to
improper workon two-w ayradios
If two-w ayradios are manipulated or retro/t-
ted incor rectl y,the electromagnetic radiation
from the two-w ayradios can inter fere with the
ve hicle elect ronics and jeopardise the operat-
ing saf ety of theve hicle. #
You should ha veall workon electrical
and electronic components car ried out
at a quali/ed specialist workshop. &
W
WARNING
ARNING Risk of accident due to
improper operation of two-w ayradios
If yo u use two-w ayradios in theve hicle
improper ly,th eir electromagnetic radiation
can disrupt theve hicle's elect ronics. This is
th e case in thefo llowing situations, in particu-
lar:
R The two-w ayradio is not connected toan
ex terior aerial.
R The exterior aerial is /tted incor rectly or is
not a lo w-re0ection aerial.
This could jeopardise the operating saf ety of
th eve hicle. #
Have the lo w-re0ection exterior aerial /t-
ted at a quali/ed specialist workshop. #
When operating two-w ayradios in the
ve hicle, alw ays connect them tothe lo w-
re 0ection exterior aerial. 420
420
Te
ch nical data

*
N
N O
OTE
TE Inva lidation of the operating permit
due tofailure tocomply with the inst ruc-
tions for installation and use The operating permit may be in
validated if the
inst ructions for installation and use of two-w ay
ra dios are not obser ved. #
Only use appr oved frequency bands. #
Obser vethe maximum permissible out-
put po wer in these frequency bands. #
Only use appr oved aerial positions. 1
Front roof area
2 Rear roof area
3 Rear wings
On vehicles with a panoramic sliding sunroof, /t-
ting an aerial tothe front or rear roof area is not
permitted. On
there ar wings, it is recommended that you /t
th e aerial on the side of theve hicle closest tothe
cent reofthero ad.
Use Tech nical Speci/cation ISO/TS 21609 (Road
Ve hicles – "EMCs for installation of aTermar ket
ra dio frequency transmitting equipment") when
re tro/tting two- wayra dios. Comply with the legal
re qu irements for de tach able parts.
If yo ur vehicle has /ttings for two-w ayradio equip-
ment, use the po wer supply and aerial connectors
pr ov ided in the pre-ins tallation. Obser vethe man-
ufacturer's supplements when /tting.
T
T w
w o-wa
o-wa y r
y radio tr
adio tr ansmission output
ansmission output
The maximum transmission output (PEAK) at the
base of the aerial must not exceed theva lues in
th efo llowing table. Te
ch nical data
421
421