MERCEDES-BENZ GLS 2023 Owners Manual

Using the wheel wrench, loosen the wheel
bolts on the wheel you wish to change by
about one full turn. Do not unscrew the
screws completely.
Position of the jack support points
&WARNING Risk of injury from incorrect
positioning of the jack
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the jack could tip with the vehicle raised.
Only position the jack at the appropriate
jacking point of the vehicle. The base of
the jack must be positioned vertically under the jacking point of the vehicle.*NOTE Damage to the vehicle due to the
jack
If you do not position the jack at the jack sup-
port points provided for this purpose, you
could damage your vehicle.
Only position the jack at the jack sup-
port points provided for this purpose.Take the ratchet wrench out of the tire-change
tool kit and place it on the hexagon nut of the
jack so that the letters "AUF" are visible.Wheels and tires399

Position support 2 of jack 4 on jack sup-
port point 1.Turn ratchet wrench 3 clockwise until jack
support 2 sits completely on jack support
point 1 and the base of the jack lies evenly
on the ground.Continue to turn ratchet wrench 3 until the
tire is raised a maximum of 1.2 in (3 cm) oM
the ground.Loosen and remove the wheel (  page 400).
Mercedes-Maybach vehicles:
Requirements:
= The running boards are retracted (  page 79)
=
The stone chipping protective covers are
removed (  page 396)Position support 2 of jack 4 on jack sup-
port point 1.Turn ratchet wrench 3 clockwise until jack
2 sits completely on jack support point 1
and the base of the jack lies evenly on the ground.Continue to turn ratchet wrench 3 until the
tire is raised a maximum of 1.2 in (3 cm) oM
the ground.Loosen and remove the wheel (  page 400).
Removing a wheel
Requirements:
= The vehicle is raised (  page 398).
*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.400Wheels and tires

When changing a wheel, avoid applying any force
to the brake discs, as this could impair the level of
comfort when braking.*NOTE Damage to threading from dirt on
wheel boltsDo not place wheel bolts in sand or on a
dirty surface.Completely unscrew the wheel bolts.Remove the wheel.
Changing the tire
Requirements: = The wheel that is to be replaced is removed
(  page 400).
*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.&WARNING Risk of accident from losing a
wheel
Oiled, greased or damaged wheel bolt/wheel
nut threads or wheel hub/wheel mounting
bolt threads can cause the wheel bolts/wheel nuts to come loose.
Never oil or grease the threads.In the event of damage to the threads,
contact a qualiNed specialist workshop
immediately.Have the damaged wheel bolts or dam-
aged hub threads replaced.Do not continue driving.Observe the information on the choice of tires
(  page 392).
For tires with a speciNed direction of rotation, an
arrow on the side wall of the tire indicates the cor-
rect direction of rotation. Observe the direction of rotation when changing the tire.
Place the wheel to be mounted on the wheelhub and push it on.&WARNING Risk of injury from tightening
wheel bolts and nuts
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip.
Only tighten wheel bolts or wheel nuts
when the vehicle is on the ground.Observe the instructions and safety notes on
"Changing a wheel" (  page 392).For safety reasons, only use wheel bolts which
have been approved by Mercedes-Benz and
for the wheel in question.*NOTE Damage to paintwork of the wheel
rim when screwing in the Nrst wheel bolt
If the wheel has too much play when screwing
in the Nrst wheel bolt, the wheel rim paint can
be damaged.
Press the wheel Nrmly against the wheel
hub when screwing in the Nrst wheel
bolt.Wheels and tires401

Tighten the wheel bolts evenly in a diagonalpattern in the order indicated until they are Nnger-tight.If the collapsible spare wheel has been moun-
ted, inOate the collapsible spare wheel
(  page 406).Lower the vehicle (  page 402).
Lowering the vehicle aser a wheel change
Requirements:
= The new wheel has been mounted
(  page 401).
Observe the information on tire pressure
(  page 375).
Place the ratchet wrench onto the hexagon
nut of the jack so that the lettering "AB" is visi-
ble.To lower the vehicle: turn the ratchet wrench
of the jack counter-clockwise.Tighten the wheel bolts evenly in a diagonal pattern in the order indicated 1 to 5 with a
maximum of 59 lb-s (80 Nm).Then tighten the wheel bolts evenly in a diago-
nal pattern in the order indicated 1 to 5 to
the speciNed tightening torque of 111 lb-s
(150 Nm).&WARNING Risk of accident due to incor-
rect tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened to the
prescribed torque.
Ensure that the wheel bolts or wheel
nuts are tightened to the prescribed
tightening torque.If you are not sure, do not move the vehi-
cle. Contact a qualiNed specialist work-
shop and have the tightening torque checked immediately.Check the tire pressure of the newly mounted
wheel and adjust accordingly.\bThe following does not apply if the new wheel is an emergency spare wheel.Vehicles with a tire pressure monitoring sys-
tem: restart the tire pressure monitoring sys-
tem (  page 380).402Wheels and tires

Emergency spare wheel
Notes on the emergency spare wheel
&WARNING Risk of accident caused by
incorrect wheel and tire dimensions
The wheel or tire sizes and the tire type of the
emergency spare wheel or spare wheel and
the wheel to be replaced may diMer. The emer-
gency spare wheel or spare wheel can signiN-
cantly impair driving characteristics of the
vehicle.
To prevent hazardous situations:
Drive carefully.Never install more than one emergency
spare wheel or spare wheel that diMers
in size.Only use an emergency spare wheel or spare wheel brieOy.Do not deactivate ESP n
.Have the emergency spare wheel or
spare wheel of a diMerent size replaced
at the nearest qualiNed specialist work-shop. The new wheel must have the cor-
rect dimensions.\bThe emergency spare wheel is fastened in the
cargo compartment under the cargo Ooor.\bNot for Mercedes-Maybach vehicles.
Observe the following notes on installing an emer-
gency spare wheel:
= The maximum permissible speed with an
emergency spare wheel installed is 50 mph
(80 km/h).
= Do not install the emergency spare wheel with
snow chains.
= Replace the emergency spare wheel aser six
years at the latest, regardless of wear.
= Use the wheel bolts that are included with the
emergency spare wheel.
= Check the tire pressure of the emergency
spare wheel installed. Correct the pressure as
necessary.
\bThe speciNed tire pressure is stated on the
label of the emergency spare wheel.\bVehicles with a tire pressure monitoring sys-
tem: if an emergency spare wheel is installed,
the tire pressure monitoring system cannot
function reliably. For a few minutes aser an
emergency spare wheel is installed, the sys- tem may still display the tire pressure of the
removed wheel. Only restart the system again when the emergency spare wheel has been
replaced with a new wheel.
Be sure to also observe the following further rela-
ted subjects:
= Notes on tire pressure (  page 375)
= Tire and Loading Information placard
(  page 380)
= Tire pressure table (  page 377)
= Notes on installing tires (  page 392)
= Installing an emergency spare wheel
(  page 396)
Wheels and tires403

*nOating the emergency spare wheel*NOTE Overheating due to the tire inOation
compressor running too longDo not run the tire inOation compressor
for longer than ten minutes without inter- ruption.
Requirements: = The emergency spare wheel has been installed
correctly. (  page 396)
\bComply with the manufacturer\bs safety notes
on the sticker of the emergency spare wheel
and on the tire inOation compressor.Remove the sticker with the label 50 mph
(80 km/h) from the tire inOation compressor
housing and aPx it to the instrument cluster
within the driver\bs Neld of vision.Remove the tire inOation compressor from the
stowage space under the trunk Ooor.
(  page 357)Pull Nller hose 1 and plug 3 out of the tire
inOation compressor housing.Insert plug 7 of Nller hose 1 in the socket
on the tire inOation compressor and then turn
it until plug 7 engages.Unscrew the cap from the valve on the emer-
gency spare wheel.Screw union nut 2 of Nller hose 1 onto the
valve.Make sure on and oM switch 4 of the tire
inOation compressor is set to 0.Insert plug 3 in a socket in your vehicle.
=
12 V socket: (  page 142)
=
Observe the notes on sockets: (  page 142)Press the start/stop button once to switch on
the power supply (  page 175).Press On/OM switch 4 on the tire inOation
compressor to I.
The tire inOation compressor is switched on.
The tire is inOated. The tire pressure appears
on manometer 5.Pump the tire to the speciNed tire pressure.\bThe speciNed tire pressure is stated on the
label of the emergency spare wheel.When the speciNed tire pressure has been
reached, press on and oM switch 4 on the
tire inOation compressor to 0.
The tire inOation compressor is switched oM.Press the start/stop button to switch oM the
power supply.If the tire pressure is higher than the speciNed
pressure, press pressure release valve button
6 until the correct tire pressure has been
reached.404Wheels and tires

Unscrew union nut 2 of Nller hose 1 from
the valve.Screw the valve cap of the emergency spare
wheel onto the valve again.Stow Nller hose 1 and plug 3 in the lower
section of the tire inOation compressor hous-
ing.Stow the tire inOation compressor in the vehi-
cle.
Collapsible spare wheel
Notes on the collapsible spare wheel
&WARNING Risk of accident caused by
incorrect wheel and tire dimensions
The wheel or tire sizes and the tire type of the
emergency spare wheel or spare wheel and
the wheel to be replaced may diMer. The emer-
gency spare wheel or spare wheel can signiN-
cantly impair driving characteristics of the
vehicle.
To prevent hazardous situations:
Drive carefully.Never install more than one emergency
spare wheel or spare wheel that diMers
in size.Only use an emergency spare wheel or spare wheel brieOy.Do not deactivate ESP n
.Have the emergency spare wheel or
spare wheel of a diMerent size replaced
at the nearest qualiNed specialist work-
shop. The new wheel must have the cor-
rect dimensions.
The collapsible spare wheel is an emergency
spare wheel which is only suitable for use for a
limited period of time and in a restricted manner in the event of a Oat tire (e.g. until the nearest
workshop).
The tire sidewalls are folded when in transport
mode. Before use, the collapsible spare wheel has
to be inOated with the accompanying compressor.
Check the tire pressure of the collapsible spare
wheel once mounted. Correct the pressure as
necessary.
The maximum permissible speed with a collapsi- ble spare wheel mounted is 50 mph (80 km/h).
Do not mount the collapsible spare wheel withsnow chains.
Replace the collapsible spare wheel aser six years
at the latest, regardless of wear.\bVehicles with a tire pressure monitoring sys-
tem: if a collapsible spare wheel is mounted,
the tire pressure monitoring system cannot
function reliably. For a few minutes aser an
emergency spare wheel is mounted, the sys- tem may still display the tire pressure of the
removed wheel. Only restart the system again when the collapsible spare wheel has been
replaced with a new wheel.
Be sure to also observe the following further rela-
ted subjects:
= Notes on tire pressure (  page 375)
= Tire pressure table (  page 377)
Wheels and tires405

Removing the collapsible spare wheel
The collapsible spare wheel is located under the
cargo compartment Ooor.
Observe the information on mounting tires
(  page 392).Open the tailgate.Open the cargo compartment Ooor.Remove the collapsible spare wheel.
Mercedes!

Pull connector 4 and the hose out of the
housing.Unscrew the cap from the valve on the col- lapsible spare wheel.Screw union nut 1 of the hose onto the
valve.Make sure on and oM switch 3 of the tire
inOation compressor is set to 0.Insert connector 4 into the cigarette lighter
socket or into a 12 V socket (  page 142) in
your vehicle.Switch on the power supply (  page 175).Press on and oM switch 3 on the tire inOation
compressor to I.
The tire inOation compressor is switched on.
The tire is inOated. The tire pressure is shown
on manometer 2.Pump the tire to the speciNed tire pressure.\bThe speciNed tire pressure is printed on the
yellow label of the collapsible spare wheel.When the speciNed tire pressure has been
reached, press on and oM switch 3 on the
tire inOation compressor to 0.If the tire pressure is higher than the speciNed
pressure, press pressure release valve button
5 until the correct tire pressure has been
reached.Wheels and tires407

Notes on technical data*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.
The data stated only applies to vehicles with standard equipment. You can obtain further infor-
mation from an authorized Mercedes-Benz Cen-
ter.
Vehicle electronics
Two-way radios
Notes on installing two-way radios
&WARNING Risk of accident due to
improper work on two-way radios
If two-way radios are manipulated or retroNt-
ted incorrectly, the electromagnetic radiation
from the two-way radios can interfere with the vehicle electronics and jeopardize the operat-
ing safety of the vehicle.
You should have all work on electrical
and electronic components carried out
at a qualiNed specialist workshop.&WARNING Risk of accident due to
improper operation of two-way radios
If you use two-way radios in the vehicle
improperly, their electromagnetic radiation
can disrupt the vehicle\bs electronics. This is
the case in the following situations, in particu-
lar:
= The two-way radio is not connected to an
exterior antenna.
= The exterior antenna is installed incor-
rectly or is not a low-reOection antenna.
This could jeopardize the operating safety of
the vehicle.
Have the low-reOection exterior antenna
installed at a qualiNed specialist work-
shop.When operating two-way radios in the
vehicle, always connect them to the low-
reOection exterior antenna.*NOTE Invalidation of the operating permit
due to failure to comply with the instruc-
tions for installation and use
The operating permit may be invalidated if the instructions for installation and use of two-wayradios are not observed.
Only use approved frequency bands.Observe the maximum permissible out-put power in these frequency bands.Only use approved antenna positions.408Technical data