MERCEDES-BENZ GLB 2023 Owners Manual

wheels and tires being damaged when driving
over obstacles increases.Avoid obstacles or drive especially care-
fully.Reduce your speed when driving over
curbs, speed bumps, manhole covers and potholes.Avoid particularly high curbs.*NOTE Possible wheel and tire damage
when parking on curbs or in potholes
Parking on curbs or in potholes can damage
the wheels and tires.
Only park on as level a surface as possi-
ble.Avoid curbs and potholes when parking.*NOTE Damage to electronic component
parts due to the use of tire-installing tools
Vehicles with tire pressure monitoring sys-
tem: There are electronic component parts in
the wheel.
If tire-installing tools are positioned in the area
of the valve, the electronic components could be damaged.Tire-installing tools should not be applied
in the area of the valve.Always have tires change at a qualiNed
specialist workshop.*NOTE Damage to summer tires at low
ambient temperatures
At low ambient temperatures, tears could form
when driving with summer tires, causing per-
manent damage to the tires.
At temperatures below 45 °F (7 °C) use M M\fS tires.
Accessory parts which are not approved for your
vehicle by Mercedes-Benz, or which are not used
correctly, can impair the operating safety.
Before purchasing and using non-approved acces-
sories, visit a qualiNed specialist workshop and
inquire about:
= Suitability
=Legal stipulations
= Factory recommendations&WARNING Risk of accident with high per-
formance tires
The special tire tread in combination with the
optimized tire compound means that the risk of skidding and hydroplaning on wet roads is
increased.
In addition, the tire grip is greatly reduced at a
low outside temperature and tire running tem-
perature.
Switch on the ESP n
and adapt your driv-
ing style accordingly.Use M M\fS tires at outside tempera-
tures of less than 50 °F (10 °C).Only use the tires for their intended pur-
pose.Wheels and tires339

Observe the following when selecting, installing
and replacing tires:
= Furthermore, the use of certain tire types in
certain regions and areas of operation can be
highly beneNcial.
= Only use tires and wheels of the same type
(summer tires, winter tires, MOExtended tires)
and the same make.
= Only install wheels of the same size (les and
right) on each axle.
It is only permissible to install a diMerent
wheel size in the event of a Oat tire in order to
drive to the specialist workshop.
= Vehicles with a tire pressure monitoring sys-
tem: all installed wheels must be equipped
with functioning sensors for the tire pressure
monitoring system.
= At temperatures below 45°F (7°C) use winter
tires or all-season tires marked M M\fS for
all wheels.
Winter tires provide the best possible grip in
wintry road conditions.= For M\fS tires, only use tires with the same
tread.
= Observe the maximum permissible speed for
the M\fS tire which is installed.
If the tire\bs maximum speed is below that of
the vehicle, this must be indicated by an
appropriate label in the driver\bs Neld of vision.
= Break in new tires at moderate speeds for the
Nrst 60 miles (100 km).
= Replace the tires aser six years at the latest,
regardless of wear.
= When replacing with tires that do not feature
run-Oat characteristics: vehicles with
MOExtended tires are not equipped with a
TIREFIT kit at the factory. Equip the vehicle with a TIREFIT kit aser replacing with tires that
do not feature run-Oat characteristics, e.g.
winter tires.
For more information on wheels and tires, contact
a qualiNed specialist workshop.
Be sure to also observe the following further rela-
ted subjects:
= Notes on tire pressure (  page 319)=
Tire and loading information placard
(  page 326)
= Tire size designation, load-bearing capacity,
speed rating and load index (  page 333)
= Tire pressure table (  page 321)
= Notes on the emergency spare wheel
(  page 347)
Notes on rotating wheels
&WARNING Risk of injury through diMerent
wheel sizes
Rotating the front and rear wheels can
severely impair the driving characteristics.
The wheel brakes or suspension components
may also be damaged.
Rotate front and rear wheels only if the
wheels and tires are of the same dimen-
sions.
Observe the instructions and safety notes on
"Changing a wheel" (  page 337)
340Wheels and tires

The wear patterns on the front and rear wheels
diMer:
= Front wheels wear more on the tire shoulder
= Rear wheels wear more in the center of the
tire
Do not drive with tires that have too little tread
depth. This signiNcantly reduces traction on wet
roads (hydroplaning).
On vehicles that have the same size front and rear
wheels, rotate the wheels according to the inter- vals in the tire manufacturer\bs warranty book in
your vehicle documents. If this is not available, rotate the tires every 3,000 to 6,000 miles(5,000 to 10,000 km), depending on the wear.Ensure that the direction of rotation is main-
tained.
Notes on storing wheels
When storing wheels, observe the following notes:
= Aser removing wheels, store them in a cool,
dry and preferably dark place.
= Protect the tires from contact with oil, grease
or fuel.
Overview of the tire-change tool kit*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.
Apart from some country-speciNc variants, vehi-
cles are not equipped with a tire-change tool kit. For more information on which tire-changing toolsare required and approved for performing a wheel
change on your vehicle, consult a qualiNed spe-
cialist workshop.
You require the following tools, forexample, to
change a wheel:
= Jack
= Chock
= Lug wrench
= Alignment bolt
The tire-change tool kit is located in tool bag 1
in the cargo compartment.
\bDepending on the vehicle equipment, the tool
bag may be located in other positions in the
cargo compartment.\bWhen stowing the tool bag, make sure that it is adequately secured.
The tool bag contains:
= Jack
= Gloves
= Lug wrench
= Alignment bolt
= Folding chock
= Ratchet for jack
Wheels and tires341

Preparing the vehicle for a wheel change
Requirements
= The vehicle is not on a slope.
= The vehicle is on solid, non-slippery and level
ground.
= The required tire-change tool kit is available.
\bIf your vehicle is not equipped with the tire-
change tool kit, consult a qualiNed specialist
workshop to Nnd out about suitable tools.Apply the electric parking brake manually.Move the front wheels to the straight-ahead
position.Shis the transmission to position ].Switch oM the vehicle.Make sure that the vehicle cannot be started.Place chocks or other suitable items under the
front and rear of the wheel that is diagonally
opposite the wheel you wish to change.If necessary, remove the wheel trim/hub caps
(  page 342).Raise the vehicle (  page 342).Removing and installing the wheel trim/hub caps
Requirements
= The vehicle is prepared for a wheel change
(  page 342).
Plastic hub cap
To remove:
Turn the center cover of the hub cap counter-
clockwise and remove the hub cap.
To install:
Make sure that the center cover of the hub cap is turned counter-clockwise.Position the hub cap and turn the center coverclockwise until the hub cap engages physically and audibly.
Raising the vehicle when changing a wheel
Requirements
= There are no persons in the vehicle.
= The vehicle has been prepared for a wheel
change (  page 342).
=
The wheel trims and hub caps have been
removed (  page 342).
Important notes on using the jack:
= Use only a vehicle-speciNc jack that has been
approved by Mercedes-Benz to raise the vehi-
cle.
= The jack is only designed for raising and hold-
ing the vehicle for a short time while a wheel is being changed and not for maintenance
work under the vehicle.
= The jack must be placed on a Nrm, Oat and
non-slip surface. If necessary, use a large, Oat,
load-bearing, non-slip underlay.
= The foot of the jack must be positioned verti-
cally under the jack support point.342Wheels and tires

Rules of conduct when the vehicle is raised:= Never place your hands or feet under the vehi-
cle.
= Never lie under the vehicle.
= Do not start the vehicle and do not release the
electric parking brake.
= Do not open or close any doors or the tailgate.
Using the lug wrench, loosen the wheel bolts
on the wheel you wish to change by about one full turn. Do not unscrew the screws com-
pletely.
Position of the jack support points
*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.&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 ofWheels and tires343

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 out of the tire-change tool kit and place it on the hexagon nut of the jack so that the letters "AUF" are visible.Position support 2 of jack 4 on jack sup-
port point 1.Turn ratchet 3 clockwise until support 2
sits completely on jack support point 1 and
the base of the jack lies evenly on the ground.Turn ratchet 3 until the tire is raised a maxi-
mum of 1.2 in (3 cm) from the ground.Loosen and remove the wheel (  page 344).Removing a wheel
Requirements
= The vehicle is raised (  page 342).
*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.
When changing a wheel, avoid applying any force
to the brake disks, 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.Unscrew the uppermost wheel bolt com-
pletely.344Wheels and tires

Screw centering pin 1 into the thread
instead of the wheel bolt.Unscrew the remaining wheel bolts com-
pletely.Remove the wheel and, if necessary, store it in the load compartment.Notes on removing an emergency spare wheel
(  page 347).
Changing the tire
Requirements:
= The wheel to be changed is removed and the
centering pin is screwed in (  page 344).
*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 337).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.Slide the wheel to be mounted onto the cen-tering pin and push it on.Observe the notes on mounting an emergencyspare wheel (  page 347).&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 337).For safety reasons, only use wheel bolts which
have been approved by Mercedes-Benz and
for the wheel in question.Wheels and tires345

*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.Tighten the wheel bolts evenly in a diagonal pattern in the order indicated until they are Nnger-tight.Unscrew and remove the centering pin.Tighten the last wheel bolt until it is Nnger-
tight.Lower the vehicle (  page 346).
Lowering the vehicle aser a wheel change
Requirements
= The new wheel has been installed
(  page 345).
To lower the vehicle: place the ratchet onto
the hexagon nut of the jack so that the letters "AB" are visible and turn counter-clockwise.Tighten the wheel bolts evenly in a diagonalpattern in the order indicated 1 to 5 with
an initial maximum force of 59 lb-s (80 Nm).Tighten the wheel bolts evenly in a diagonal
pattern in the order indicated 1 to 5 with
the speciNed tightening torque of 96 lb-s
(130 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 installed
wheel and adjust it if necessary.\bThe following does not apply if the new wheel is an emergency spare wheel.Vehicles with a tire pressure loss warning sys-tem: restart the tire pressure loss warning sys-
tem (  page 325).Vehicles with a tire pressure monitoring sys-
tem: restart the tire pressure monitoring sys-
tem (  page 324).346Wheels 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 deOated emergency spare wheel is
secured in the emergency spare wheel bag in
the cargo compartment and is secured to the adjustable cargo Ooor in the lower position.
Observe the following notes on removing an emer-
gency spare wheel:
= Before stowing the emergency spare wheel,
make sure there is no air les in the tire.
If necessary, allow the air to escape.
= To release air from the tire: remove the valve
cap of the tire.
= Press down the metal insert in the valve using
a pointed object, e.g. a pen.
= Screw the valve cap onto the valve.
\bVehicles with adjustable cargo Ooor: always
stow the deOated emergency spare wheel in
the lower position on the adjustable cargo
Ooor.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 loss warning sys- tem: if an emergency spare wheel is installed,
the tire pressure loss warning system cannot function reliably. Only restart the system
again when the emergency spare wheel has been replaced with a new wheel.Wheels and tires347

Vehicles 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 319)
= Tire and Loading Information placard
(  page 326)
= Tire pressure table (  page 321)
= Notes on installing tires (  page 337)
= Installing an emergency spare wheel
(  page 342)
*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 342)
\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 301)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 124)
348Wheels and tires