Get Wheels and tyres -> Tyre pressure Guide for Mercedes B Class SUV Third Generation (2018-2026)

NOTE Damage to vehicle body or suspen-

sion components caused by tted snow

chains

On 4MATIC vehicles, if you t snow chains on

the rear wheels, you can damage vehicle body

or suspension components.

On 4MATIC vehicles, only t snow chains

on the front wheels.

Observe the following notes when using snow

chains:

Snow chains are only permissible for certain

wheel/tyre combinations. You can obtain

information about this from a Mercedes-Benz

Service Centre.

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 tted, the maximum per-

missible speed is 50 km/h.

Vehicles with Active Parking Assist: do not use

Active Parking Assist when snow chains are

tted.

You can permanently limit the maximum

speed for driving with winter tyres

(/ page 322).

You can deactivate ESP

to pull away

(/ page 315). This allows the wheels to spin,

achieving an increased driving force.

Tyre pressure

Notes on tyre pressure

WARNING Risk of accident due to insu-

cient or excessive tyre pressure

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

ticular the following risks:

The tyres can burst.

The tyres 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 tyre

pressure and check the tyre pressure of

all tyres, 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 tyre pressure, if necessary.

Tyre pressure which is too high or too low can:

Shorten the service life of the tyres.

Cause increased tyre damage.

Adversely aect driving characteristics and

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

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WARNING Risk of accident due to repea-

ted pressure drop in the tyres

The wheels, valves or tyres could be damaged.

Too low a tyre pressure can lead to the tyres

bursting.

Examine the tyres for foreign objects.

Check whether the tyre has a puncture

or the valve has a leak.

If you are unable to rectify the damage,

contact a qualied specialist workshop.

Information on the recommended tyre pressure

for the vehicle's factory-tted tyres can be found

on the tyre pressure table on the inside of the fuel

ller ap (/ page 590).

Use a suitable pressure gauge to check the tyre

pressure. The outer appearance of a tyre does not

permit any reliable conclusion about the tyre pres-

sure.

Only correct tyre pressures when the tyres are

cold. Conditions for cold tyres:

The vehicle has been parked with the tyres out

of direct sunlight for at least three hours.

The vehicle has travelled less than 1.6 km.

The vehicle's tyres heat up when driving. As the

temperature of the tyres increases, so too does

the tyre pressure.

Vehicles with a tyre pressure monitoring system:

you can also see the tyre pressure in the driver's

display (/ page 591).

Notes on trailer operation

Always inate the rear axle tyres to the recom-

mended tyre pressures on the tyre pressure table

for increased load.

Tyre pressure table

The tyre pressure table is on the inside of the fuel

ller ap.

The tyre pressure table shows the recommended

tyre pressure for all tyres approved for this vehi-

cle. The recommended tyre pressures apply for

cold tyres under various operating conditions, i.e.

loading and/or speed of the vehicle.

If one or more tyre sizes precede a tyre pressure,

the following tyre pressure information is only

valid for those tyre sizes and their respective load

condition.

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If the preceding tyre sizes are complemented by

the + symbol, the tyre pressure information

following shows alternative tyre pressures. Fuel

consumption may then increase slightly.

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.

Tyre pressure monitoring system

▌Function of the tyre pressure monitoring sys-

tem

The system checks the tyre pressure and the tyre

temperature of the tyres tted to the vehicle by

means of a tyre pressure sensor.

The tyre pressure and the tyre temperature

appear in the driver's display.

If there is a substantial pressure loss or if the tyre

temperature is excessive, you will be warned with

display messages (/ page 811) or the h

warning lamp in the driver's display

(/ page 838).

The tyre pressure monitoring system is only an

aid. It is the driver's responsibility to set the tyre

pressure to the recommended cold tyre pressure

suitable for the operating situation.

In most cases, the tyre pressure monitoring sys-

tem will automatically update the new reference

values aer you have changed the tyre pressure.

You can, however, also update the reference val-

ues by restarting the tyre pressure monitoring

system manually (/ page 592).

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 tyre, for example

there is a malfunction caused by another radio

signal source

▌Checking the tyre pressure with the tyre pres-

sure monitoring system

Requirements

The vehicle is switched on.

Driver's display:

Service

Press a to conrm.

One of the following displays appears:

Current tyre pressure of each wheel:

Tyre pressures will be displayed after a few

minutes of driving: current values are not yet

known to the system. The pressure/tempera-

ture values of each tyre are displayed as soon

as they are known to the system.

Tyre pressure monitor active: the teach-in

process of the system is not yet complete. The

tyre pressures are already being monitored.

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Compare the current tyre pressure with the

recommended tyre pressure for the current

operating condition (/ page 590). Addition-

ally, observe the notes on cold tyres

(/ page 589).

The values displayed in the driver's display

may deviate from those of the tyre pressure

gauge as they refer to sea level. At high eleva-

tions, the tyre pressure values indicated by a

tyre pressure gauge are higher than those

shown in the driver's display.

▌Restarting the tyre pressure monitoring system

Requirements

The recommended tyre pressure is correctly

set for the respective operating condition on

each of the four wheels (/ page 589).

Restart the tyre pressure monitoring system in the

following situations:

The tyre pressure has changed.

The wheels or tyres have been changed or

newly tted.

Driver's display:

Service

Select Tyre pressure and conrm with a.

Swipe downwards on Touch Control on the

steering wheel.

The Use current tyre pressures as new refer-

ence values?

message is shown in the driver's

display.

Select Yes and conrm the restart with a.

The

Tyre pressure monitor restarted message

is shown in the driver's display.

Current warning messages are deleted and

the h yellow warning lamp goes out.

Aer you have driven for a few minutes, the

system checks whether the current tyre pres-

sures are within the specied range. The cur-

rent tyre pressures are then accepted as refer-

ence values and monitored.

If the tyre pressure levels are not within the

specied range, the

Please correct tyre pres-

sure

message appears.

Tyre pressure loss warning system

▌Function of the tyre pressure loss warning sys-

tem

The tyre pressure loss warning system warns the

driver by means of display messages when there

is a severe tyre pressure loss.

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 tyre, for example

an even pressure loss on more than one tyre

occurs

The system has a restricted or delayed function

particularly in the following situations:

poor ground conditions, e.g. snow or gravel

driving with snow chains

when adopting a very sporty driving style with

high cornering speeds or sudden acceleration

driving with a very heavy or large trailer

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Wheels and tyres -> Tyre pressure for Your Mercedes B Class SUV Third Generation (2018-2026)

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