Get Wheels and tires -> Tire pressure Guide for Mercedes G Class SUV Fourth Generation (2019-2024)

Notes on snow chains

NOTE Damage to components of the vehi-

cle body or chassis due to mounted snow

chains

If you mount snow chains to the front wheels

of 4MATIC vehicles, you may damage compo-

nents of the vehicle body or chassis.

Only mount snow chains to the rear

wheels of 4MATIC vehicles.

Mercedes-AMG vehicles: the notes on using snow

chain-compatible AMG winter tires apply to AMG

tires. Snow chains are permitted for use only with

these.

Observe the following notes when using snow

chains:

Snow chains are only permissible for certain

wheel/tire combinations. You can obtain infor-

mation about this from an authorized

Mercedes-Benz Center.

For safety reasons, only use snow chains that

have been specically approved for your vehi-

cle by Mercedes-Benz, or snow chains with

the same quality standard.

If snow chains are installed, the maximum per-

missible speed is 30 mph (50 km/h).

Vehicles with Active Parking Assist: do not use

Active Parking Assist when snow chains are

installed.

You can deactivate ESP

to pull away

(/ page 164). This allows the wheels to spin,

achieving an increased driving force.

Tire pressure

Notes on tire pressure

WARNING Risk of accident due to insu-

cient or excessive tire pressure

Underinated or overinated tires pose in par-

ticular the following risks:

The tires can burst.

The tires can wear excessively and/or

unevenly.

The driving characteristics as well as the

steering and braking characteristics may

be greatly impaired.

Comply with the recommended tire pres-

sures and check the tire pressure of all

tires, including the spare wheel, regu-

larly:

Monthly

When the load changes

Before embarking on a longer journey

If operating conditions change, e.g. o-

road driving

Adjust the tire pressure, if necessary.

Tire pressure which is too high or too low can:

Shorten the service life of the tires.

Cause increased tire damage.

Adversely aect driving characteristics and

thus driving safety, e.g. due to hydroplaning.

348

Wheels and tires

WARNING Risk of accident due to too low

a tire pressure

Tires with pressure that is too low can over-

heat and burst as a consequence.

In addition, they also suer from irregular

wear, which can signicantly impair the brak-

ing properties and the handling characteris-

tics.

Avoid excessively low tire pressure.

Tire pressure which is too low can cause:

Tire defects as a result of overheating

Impaired handling characteristics

Irregular wear

Increased fuel consumption

WARNING Risk of accident due to too high

a tire pressure

Tires with excessively high pressure can burst.

In addition, they also suer from irregular

wear, which can signicantly impair the brak-

ing properties and the handling characteris-

tics.

Avoid excessively high tire pressures.

Tire pressure which is too high can cause:

Increased braking distance

Impaired handling characteristics

Irregular wear

Impaired driving comfort

Susceptibility to damage

WARNING Risk of accident due to repea-

ted pressure drop in the tires

The wheels, valves or tires could be damaged.

Too low a tire pressure can lead to the tires

bursting.

Examine the tires for foreign objects.

Check whether the tire has a puncture or

the valve has a leak.

If you are unable to rectify the damage,

contact a qualied specialist workshop.

You can nd information on the recommended

tire pressure for the vehicle's factory-installed

tires on the following labels:

Tire and loading information placard on the

B‑pillar of your vehicle (/ page 353).

Tire pressure table on the inside of the fuel

ller ap (/ page 350).

Observe the maximum tire pressure

(/ page 360).

Use a suitable pressure gauge to check the tire

pressure. The outer appearance of a tire does not

permit any reliable conclusion about the tire pres-

sure.

Vehicles with a tire pressure monitoring system:

you can also check the tire pressure using the on-

board computer.

Only correct tire pressure when the tires are cold.

Conditions for cold tires:

The vehicle has been parked with the tires out

of direct sunlight for at least three hours.

The vehicle has traveled less than 1 mile

(1.6 km).

Wheels and tires

349

A rise in the tire temperature of 18°F (10°C)

increases the tire pressure by approx. 10 kPa

(0.1 bar/1.5 psi). Take this into account when

checking the tire pressure of warm tires.

The tire pressure recommended for increased

load/speed in the tire pressure table can aect

the ride comfort.

WARNING Risk of accident due to unsuita-

ble accessories on tire valves

If you mount unsuitable accessories onto tire

valves, the tire valves may be overloaded and

malfunction, which can cause tire pressure

loss.

Only screw standard valve caps or valve

caps specically approved by Mercedes-

Benz for your vehicle onto the tire valve.

Notes on trailer operation

Always inate the rear axle tires to the recommen-

ded tire pressure on the tire pressure table for

increased load.

Notes on driving on sand

When driving on sand, you can lower the tire pres-

sure (/ page 132).

Tire pressure table

The tire pressure table is on the inside of the fuel

ller ap.

The data shown in the images is example

data.

The tire pressure table shows the recommended

tire pressure for all tires approved for this vehicle.

The recommended tire pressures apply for cold

tires under various operating conditions, i.e. load-

ing and/or speed of the vehicle.

If one or more tire sizes precede a tire pressure,

the tire pressure information following is only valid

for those tire sizes.

The load conditions "partially laden" and "fully

laden" are dened in the table for dierent num-

bers of passengers and amounts of luggage. The

actual number of seats may dier from this.

Some tire pressure tables only show the rim diam-

eter instead of the complete tire size, e.g.

R18.

The rim diameter is part of the tire size. You can

nd it on the tire side wall (/ page 361).

Be sure to also observe the following further rela-

ted subjects:

Notes on tire pressure (/ page 348)

Tire and loading information placard

(/ page 353)

Maximum tire pressure (/ page 360)

350

Wheels and tires

Checking the tire pressure manually

Read the tire pressure recommended for the

current operating conditions from the tire and

loading information placard or the tire pres-

sure table. Observe the notes on tire pressure.

Remove the valve cap of the tire to be

checked.

Press the tire pressure gauge securely onto

the valve.

Read the tire pressure.

If the tire pressure is lower than the recom-

mended value, increase the tire pressure to

the recommended value.

If the tire pressure is higher than the recom-

mended value, release air. To do so, press

down the metal pin in the valve, e.g. using the

tip of a pen. Then check the tire pressure

again using the tire pressure gauge.

Screw the valve cap onto the valve.

Further related subjects:

Notes on tire pressure (/ page 348)

Tire pressure table (/ page 350)

Tire and loading information placard

(/ page 353)

Tire pressure monitoring system

▌Function of the tire pressure monitoring system

DANGER Risk of accident due to incorrect

tire pressure

Each tire, including the spare (if provided),

should be checked monthly when cold and

inated to the ination pressure recommen-

ded by the vehicle manufacturer on the vehi-

cle placard or tire ination pressure label. (If

your vehicle has tires of a dierent size than

the size indicated on the vehicle placard or

tire ination pressure label, you should deter-

mine the proper tire ination pressure for

those tires.)

As an added safety feature, your vehicle has

been equipped with a tire pressure monitoring

system (TPMS) that illuminates a low tire pres-

sure telltale when one or more of your tires is

signicantly under-inated. Accordingly, when

the low tire pressure telltale illuminates, you

should stop and check your tires as soon as

possible, and inate them to the proper pres-

sure. Driving on a signicantly under-inated

tire causes the tire to overheat and can lead

to tire failure. Under-ination also reduces fuel

eciency and tire tread life, and may aect

the vehicle’s handling and stopping ability.

Please note that the TPMS is not a substitute

for proper tire maintenance, and it is the driv-

er’s responsibility to maintain correct tire

pressure, even if under-ination has not

reached the level to trigger illumination of the

TPMS low tire pressure telltale.

Your vehicle has also been equipped with a

TPMS malfunction indicator to indicate when

the system is not operating properly. The

TPMS malfunction indicator is combined with

the low tire pressure telltale. When the system

detects a malfunction, the telltale will ash for

approximately one minute and then remain

continuously illuminated. This sequence will

continue upon subsequent vehicle start-ups as

long as the malfunction exists.

Wheels and tires

351

When the malfunction indicator is illuminated,

the system may not be able to detect or signal

low tire pressure as intended. TPMS malfunc-

tions may occur for a variety of reasons,

including the installation of replacement or

alternate tires or wheels on the vehicle that

prevent the TPMS from functioning properly.

The system checks the tire pressure and the tire

temperature of the tires tted to the vehicle by

means of a tire pressure sensor.

The tire pressure and the tire temperature appear

on the on-board computer (/ page 352).

If there is a substantial pressure loss or if the tire

temperature is excessive, you will be warned with

display messages (/ page 434) or the h

warning lamp on the instrument display

(/ page 453).

The tire pressure monitoring system is only an aid.

It is the driver's responsibility to set the tire pres-

sure to the recommended cold tire pressure suita-

ble for the operating situation.

In most cases, the tire pressure monitoring sys-

tem will automatically update the new reference

values aer you have changed the tire pressure.

You can, however, also update the reference val-

ues by restarting the tire pressure monitoring sys-

tem manually (/ page 353).

System limits

The system may be impaired or may not function

particularly in the following situations:

incorrect reference values were taught in

sudden pressure loss caused by a foreign

object penetrating the tire, for example

there is a malfunction caused by another radio

signal source

Aer a maximum of ten minutes of fording,

the Tire Press. Monitor Currently Unavailable

message appears on the instrument display.

The tire pressure monitoring system is then

temporarily unavailable due to the fording.

This message will disappear again approx-

imately one minute aer the fording.

▌Checking the tire pressure with the tire pres-

sure monitoring system

Requirements

The vehicle is switched on.

On-board computer:

Service

Tires

One of the following displays will appear:

Current tire pressure and tire temperature on

the individual wheels:

Tire pressure will be displayed after driving a

few minutes

352

Wheels and tires

Wheels and tires -> Tire pressure for Your Mercedes G Class SUV Fourth Generation (2019-2024)

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