MERCEDES-BENZ GLS SUV 2021 Owners Manual

Inter
changing the front and rear wheels if the
wheels or tyres ha vedi.erent dimensions can
re nder thege neral ope rating permit in valid.
The wear patterns on the front and rear wheels
di.er:
R front wheels wear more on the tyre shoulder
R rear wheels wear more in the centre of the
tyre
Do not drive with tyres that ha vetoo little tread
dep th. This signi/cantly reduces traction on wet
ro ads (aquaplaning).
On vehicles with the same front and rear wheel
size, you can inter change the wheels every
5,000 to10,000 km, depending on thewe ar.
Ensu rethe direction of rotation is maintained for
th e wheels.
Obser vethe inst ructions and saf ety no tes on
"Changing a wheel" when doing so (/ page 409). N
No
ot
tes on st
es on st or
oring wheels
ing wheels When storing wheels, obser
vethefo llowing no tes:
R ATer removing wheels, store them in a cool,
dry and preferably dark place.
R Protect the tyres from contact with oil, grease
or fuel. Ov
Ov
er
ervie
vie w of t
w of t he tyr
he tyr e-c
e-chang
hang e t
e tool kit
ool kit Apart from some count
ry-speci/c variants, vehi-
cles are not equipped with a tyre-change tool kit.
Fo r more information on which tools are requ ired
and appr ovedto per form a wheel change on your
ve hicle, consult a quali/ed specialist workshop.
Re quired tyre-changing tools may include, for
ex ample:
R Jack
R Chock
R Wheel wrench
% The jack weighs appr oximately 3.4 kg.
The maximum load capacity of the jack can
be found on the stic ker a1xed tothe jac k. The jack is maintenance-free. If
there is a
malfunction, please contact a quali/ed spe-
cialist workshop.
Ty re-change tool kit 1is located under the load
compartment 0oor.
% Depending on the model, the tyre change tool
kit may be located in other positions under
th e load compartment 0oor. The tyre-change
tool kit includes thefo llowing:
R Jack
R Wheel wrench
R Wheel studs 408
408
Wheels and tyres

R
Extension attachment for wheel studs, if nec-
essary (depending on vehicle version)
R Folding chock
R Ratchet ring spanner Pr
Pr
epar
epar ing t
ing the v
he vehicle f
ehicle f or a wheel c
or a wheel c hange
hange R
R
eq
eq uir
uir ements:
ements:
R The vehicle is not on a slope.
R The vehicle is on solid, non-slippery and le vel
gr ound.
R The requ ired tyre-change tool kit is available.
% Ifyo ur vehicle is not equipped with the tyre-
ch ange tool kit, consult a quali/ed specialist
wo rkshop to/nd out about sui table tools. #
Apply the electric parking brake manuall y.#
Movethe front wheels tothe straight-ahead
position. #
ShiT the transmission toposition j. #
V
Vehicles wit
ehicles wit h lev
h level contr
el contr ol syst
ol system:
em:setthe nor-
mal vehicle le vel (/ page 269). #
Switch o. theve hicle. #
Make sure that theve hicle cann otbe star ted. #
Place choc ks orother suitable items under the
front and rear of the wheel that is diagonal ly
opposite the wheel you wish tochange. #
Raise theve hicle (/ page 410).
A
A dditionally
dditionally , f
, for Mer
or Mer cedes-Ma
cedes-Ma ybac
ybach v
h vehicles:
ehicles: #
Retract theru nning boa rds (/ page 90) #
Toremo vestone chipping pr otective co vers
2 : #
Loosen expansion rive t1 and pull it out. #
Fold down and remo vestone chipping pr otec-
tive co vers 2 . R
R
emo
emo ving and
ving and /tting
/ttingt
the wheel tr
he wheel tr im/hub caps
im/hub caps R
R
eq
eq uir
uir ements:
ements:
R The vehicle is prepared for a wheel change
(/ page 409). Wheels and tyres
409
409

Plas
Plastic hub cap
tic hub cap #
T
To r
o r emov
emov e:
e:turn the centre co ver of the hub
cap anti-clockwise and remo vethe hub cap. #
T To o /t:
/t: make sure that the centre co ver of the
hub cap is turned anti-clockwise. #
Position the hub cap and turn the centre co ver
clockwise until the hub cap engages ph ysically
and audibl y.
Aluminium hub cap
Aluminium hub cap #
T
To r
o r emov
emov e:
e:position soc ket2 from the tyre-
ch ange tool kit on hub cap 1.#
Position wheel spanner 3on soc ket2. #
Using wheel spanner 3, turn hub cap1
anti-clockwise and remo veit. #
T
T o
o /t:
/t: follow the inst ructions abo veinreve rse
order.
% Speci/ed
Speci/ed tight
tightening t
ening t orq
orque:ue: 25 Nm. R
R
aising t
aising t he v
he vehicle when c
ehicle when c hanging a wheel
hanging a wheel R
R
eq
eq uir
uir ements:
ements:
R There are no persons in theve hicle.
R The vehicle has been prepared for a wheel
ch ange (/ page 409).
Impor tant no tes on using the jack:
R Use only a vehicle-speci/c jack that has been
appr ovedby Mercedes-Benz toraise theve hi-
cle.
R The jack is only designed forra ising and hold-
ing theve hicle for a short time while a wheel
is being changed and not for maintenance
wo rkunder theve hicle.
R The jack must be placed on a /rm, 0at and
non-slip sur face. If necessar y,use a lar ge, 0at,
load-bearing, non-slip underla y.R
The foot ofthe jack must be positioned verti-
cally under the jack support point. 410
410
Wheels and tyres

Ru
les of conduct when theve hicle is raised:
R Never place your hands or feet under theve hi-
cle.
R Never lie under theve hicle.
R Do not start theve hicle and do not release the
electric parking brake.
R Do not open or close any doors or theta ilgate. #
Using the wheel wrench, loosen the wheel
bolts on the wheel you wish tochange by
about one full turn. Do not unscr ewthe
scr ews comple tely. Po
sition of jack support points &
W
WARNING
ARNING Risk of injury from inco rrect
positioning of the jack
If yo u do not position the jack cor rectly at the
appropriate jacking point of theve hicle, the
jack could tip wi th theve hicle raised. #
Only position the jack at the appropriate
jacking point of theve hicle. The base of
th e jack must be positioned vertically
under the jacking point of theve hicle. *
N
NOOTE
TE Vehicle damage from the jack If
yo u do not position the jack cor rectly at the
appropriate jack support point of theve hicle,
th e jack could tip over with theve hicle raised. #
The jack is designed exclusively for jac k-
ing up theve hicle at the jack support
points. #
Take thera tchet ring spanner out of the tyre-
ch ange tool kit and place it on the he xagon
nut of the jack so that the letters "AUF" are
visible. Wheels and tyres
411
411

#
Position support 2of jack 4on jack sup-
port point 1. #
Turn ratchet ring spanner 3clockwise until
jack support 2sits comple tely on jacking
point 1and the base of the jack lies evenly
on thegr ound. #
Continue toturn ratchet ring spanner 3until
th e tyre is raised a maximum of 3 cm o. the
gr ound. #
Loosen and remo vethe wheel (/ page 412).
Mer
Mer cedes-Ma
cedes-Ma ybac
ybach v
h vehicles:
ehicles: R
R
eq
eq uir
uir ements:
ements:
R The running boa rds are retracted (/ page 90) R
The stone chipping pr otective co vers are
re mo ved (/ page 409) #
Position support 2of jack 4on jack sup-
port point 1. #
Turn ratchet ring spanner 3clockwise until
jack 2sits comple tely on jacking point 1
and the base of the jack lies evenly on the
gr ound. #
Continue toturn ratchet ring spanner 3until
th e tyre is raised a maximum of 3 cm o. the
gr ound. #
Loosen and remo vethe wheel (/ page 412). R
R
emo
emo ving a wheel
ving a wheel R
R
eq
eq uir
uir ements:
ements:
R The vehicle is raised (/ page 410).
* NO
NOTE
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. 412
412
Wheels and tyres

N
N
o
ot
te on AMG v
e on AMG v ehicles:
ehicles:
When changing a wheel, avoid applying any force
to the brake discs, as this could impair the le vel of
comfort when braking.
* NO
NOTE
TEDamage tothre ading from dirt on
wheel bolts #
Do not place wheel bolts in sand or on a
dirty sur face. #
Comple tely unscr ewthe wheel bolts. #
Remo vethe wheel. F
F
itting a ne
itting a ne w wheel
w wheel R
R
eq
eq uir
uir ements:
ements:
R The wheel that is tobe replaced is remo ved
( / page 412).
* NO
NO TE
TEMercedes-AMG vehicles #
Obser vethe no tes in the Supplement.
Yo u could otherwise failto recognise
dangers. &
W
WARNING
ARNING Risk of accident from losing a
wheel
Oiled or greased wheel bolts can cause the
wheel bolts tocome loose, as too can dam-
aged wheel bolts or wheel hub thre ads. #
Never oil or grease theth re ads. #
Intheev ent of damage totheth re ads,
contact a quali/ed specialist workshop
immediatel y. #
Have the damaged wheel bolts or dam-
aged hub thre ads replaced. #
Do not continue driving. #
Obser vethe information on thech oice of tyres
(/ page 404).
Fo r tyres with a speci/ed direction of rotation, an
ar ro w on the side wall of the tyre indicates the
cor rect direction of rotation. Obser vethe direc-
tion of rotation when /tting.
N
No ot
te on AMG v
e on AMG v ehicles:
ehicles: #
Place the wheel tobe /t tedonthe wheel hub
and push it on. &
W
WARNING
ARNING Risk of injury from tightening
wheel bolts and nuts
If yo u tighten the wheel bolts or wheel nuts
when theve hicle is raised, the jack could tip. #
Only tighten wheel bolts or wheel nuts
when theve hicle is on thegr ound. #
Obser vethe inst ructions and saf ety no tes on
"Changing a wheel" (/ page 404). #
For saf etyre asons, only use wheel bolts which
ha ve been appr oved byMercedes-Benz and
fo rth e wheel in question. #
Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated until they are
/nger-tight. #
Ifth e collapsible emer gency spa rewheel has
been /tted, in0ate the collapsible emer gency
spa rewheel (/ page 418). #
Lowe rth eve hicle (/ page 414). Wheels and tyres
413 413

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