Get Wheels and tyres -> Tyre pressure Guide for Mercedes B Class SUV First Generation (2005-2010)

Snow chains

If snow chains are fitted to the rear

wheels, they may rub against the bodywork

or parts of the suspension. This may cause

damage to the vehicle or the tyres.

Vehicles with steel wheels: if you wish

to fit snow chains to steel wheels, make

sure that you remove the respective

wheels' hubcaps first. The hubcaps may

otherwise be damaged.

For safety reasons, Mercedes-Benz recom-

mends that you only use snow chains that

have been specially approved for your vehicle

by Mercedes-Benz, or that are of a corre-

sponding standard of quality.

If you intend to fit snow chains, please bear

the following points in mind:

snow chains cannot be fitted to all wheel-

tyre combinations. Permissible wheel-tyre

combinations (Y page 302).

snow chains must not be fitted to the emer-

gency spare wheel, e.g. a Minispare emer-

gency spare wheel.

fit snow chains only in pairs and only to the

front wheels. Observe the manufacturer's

installation instructions.

If snow chains are fitted, you cannot use

Active Parking Assist (Y page 166).

Do not exceed the maximum permissible

speed of 50 km/h.

You may wish to deactivate

ESP

(Y page 66) when pulling away with

snow chains fitted. This way you can allow

the wheels to spin in a controlled manner,

achieving an increased driving force (cut-

ting action).

Tyre pressure

Tyre pressure specifications

WARNING

Tyres with too low or too high tyre pressure

contain the following hazards:

they can burst, in particular if the vehicle is

heavily laden or when driven at high

speeds.

the tyres can wear excessively and/or

unevenly, which can severely impair tyre

traction.

the driving, steering and braking character-

istics may be severely impaired.

There is a risk of accident.

Follow recommended tyre inflation pressures

and check the pressure of all the tyres includ-

ing the spare wheel:

at least every two weeks

if the load changes

before beginning a long journey

for changed operating conditions, e.g. off-

road driving

If necessary, correct the tyre pressure.

WARNING

If you fit unsuitable accessories onto tyre

valves, the tyre valves may be overloaded and

malfunction, which can cause tyre pressure

loss. Due to their design, retrofitted tyre pres-

sure monitors keep the tyre valve open. This

can also result in tyre pressure loss. There is

a risk of accident.

Only screw standard valve caps or valve caps

specifically provided by Mercedes-Benz for

your vehicle onto the tyre valve.

WARNING

If the tyre pressure drops repeatedly, the

wheel, valve or tyre may be damaged. Tyre

pressure that is too low may result in a tyre

blow-out. There is a risk of accident.

Tyre pressure

295

Wheels and tyres

Check the tyre for foreign objects.

Checkwhether the wheel is losing air or the

valve is leaking.

If you are unable to rectify the damage, con-

tact a qualified specialist workshop.

Environmental note

Check the tyre pressure regularly, at least

every 14 days.

You will find a table of tyre pressures for var-

ious operating conditions on the inside of

your vehicle's fuel filler flap.

Operation with a trailer: the applicable

value for the rear tyres is the maximum tyre

pressure value stated in the table inside the

fuel filler flap.

The table inside the fuel filler flap may state

tyre pressures for different load conditions.

These are defined in the table as different

numbers of passengers and amounts of lug-

gage. The actual number of seats may vary –

for more information, please refer to the vehi-

cle's registration documents.

If tyre sizes are not specified, the tyre pres-

sures stated on the tyre pressure information

label apply for all tyres approved for this vehi-

cle.

If a tyre size precedes a tyre pressure, the tyre

pressure information following is only valid

for that tyre size.

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 pressure.

If possible, only correct tyre pressures when

the tyres are cold.

The tyres are cold:

if the vehicle has been parked with the tyres

out of direct sunlight for at least three

hours and

if the vehicle has not been driven further

than 1.6 km

Depending on the ambient temperature, the

speed you are driving at and the load on the

tyres, the tyre temperature may change and

thereby the tyre pressure: 10 kPa (0.1 bar/

1.5 psi) per 10 †. Take this into account

when checking the pressure of warm tyres.

Only correct the tyre pressure if it is too low

for the current operating conditions.

Driving with tyre pressure that is too high or

too low can:

shorten the service life of the tyres

cause increased tyre damage

have a negative effect on handling charac-

teristics and thus the driving safety (e.g.

aquaplaning)

The tyre pressure values given for low

loads are minimum values which offer you

good ride comfort characteristics.

However, you can also use the values given

for higher loads. These are permissible and

will not adversely affect the running of the

vehicle.

Tyre pressure loss warning system

Important safety notes

While the vehicle is in motion, the tyre pres-

sure loss warning system monitors the set

tyre pressure using the rotational speed of

the wheels. This enables the system to detect

significant pressure loss in a tyre. If the speed

of rotation of a wheel changes as a result of

a loss of pressure, a corresponding warning

message will appearinthe multifunction dis-

play.

296

Tyre pressure

Wheels and tyres

The tyre pressure warning system does not

warn you of an incorrectly set tyre pressure.

Observe the notes on the recommended tyre

pressure (Y page 295).

The tyre pressure loss warning system does

not replace the need to regularly check your

vehicle's tyre pressures, since an even loss of

pressure on several tyres at the same time

cannot be detected by the tyre pressure loss

warning system.

The tyre pressure monitor is not able to warn

you of a sudden loss of pressure, e.g. if the

tyre is penetrated by a foreign object. In the

event of a sudden loss of pressure, bring the

vehicle to a halt by braking carefully. Avoid

abrupt steering manoeuvres.

The function of the tyre pressure loss warning

system is limited or delayedif:

snow chains are fitted to yourvehicle's

tyres.

road conditions are wintry.

you are driving on sand or gravel.

you adopt a very sporty driving style (cor-

nering at high speeds or driving with high

rates of acceleration).

you are towing a very heavy or large trailer.

you are driving with a heavy load (in the

vehicle or on the roof).

Restarting the tyre pressure loss warn-

ing system

Restart the tyre pressure loss warning system

if you have:

changed the tyre pressure

changed the wheels or tyres

fitted new wheels or tyres

Before restarting, consult the table of tyre

pressures on the inside of the fuel filler flap

to ensure that the tyre pressure in all four

tyres is set correctly for the respective

operating conditions.

The tyre pressure loss warning system can

only give reliable warnings if you have set

the correct tyre pressure. If an incorrect

tyre pressure is set, these incorrect values

will be monitored.

Observe the notes in the section on tyre

pressures (Y page 295).

Make sure that the key is in position 2 in

the ignition lock.

Press the = or ; button to select the

Service menu.

Press the 9 or : button to select

Tyre pressure.

Press the a button.

The

Run Flat Indicator active

Restart with OK message appears in the

multifunction display.

If you wish to confirm the restart:

Press the a button.

The

Tyre press. now OK? message

appears in the multifunction display.

Press the 9 or : button to select

Yes.

Press the a button.

The

Run Flat Indicator restarted

message appears in the multifunction dis-

play.

After a teach-in period, the tyre pressure

loss warning system will monitor the set

tyre pressures of all four tyres.

If you wish to cancel the restart:

Press the % button.

If the

Tyre press. now OK? message

appears, use the 9 or : button to

select

Cancel.

Press the a button.

The tyre pressure values stored at the last

restart will continue to be monitored.

Tyre pressure

297

Wheels and tyres

Changing awheel

Flat tyre

You can find information on whatto do in the

event of flat tyre in the "Flat tyre" section

(Y page 276). Instructions for driving with

MOExtended tyres in the event of a flat tyre

are also provided there.

Interchanging the wheels

WARNING

Interchanging the front and rear wheels may

severely impair the driving characteristics if

the wheels or tyres have different dimensions.

The wheel brakes or suspension components

may also be damaged. There is a risk of acci-

dent.

Interchange front and rear wheels only if the

wheels and tyres are of the same dimensions.

Interchanging the front and rear wheels of

differing dimensions can render the general

operating permit invalid.

Always pay attention to the instructions and

safety warnings in the "Fitting a wheel" sec-

tion (Y page 298).

The wear patterns on the front and rear tyres

differ, depending on the operating conditions.

Interchange the wheels before a clear wear

pattern has formed on the tyres. Front tyres

typically wear more on the shoulders and the

rear tyres in the centre.

On vehicles that have the same size front and

rear wheels, you can interchange the wheels

every 5,000km to 10,000 km depending on

the degree of tyre wear. Maintain the direc-

tion of tyre rotation.

Clean the contact surfaces of the wheel and

the brake disc thoroughly every time a wheel

is interchanged. Check the tyre pressure and,

if necessary, restart the tyre pressure loss

warning system.

Direction of rotation

Tyres with a specified direction of rotation

have additional benefits, e.g. if there is a risk

of aquaplaning. You will only gain these ben-

efits if the correct direction of rotation is

observed.

An arrow on the sidewall of the tyre indicates

its correct direction of rotation.

Storing wheels

Store wheels that are not being used in a cool,

dry and preferably dark place. Protectthe

tyres against oil, grease, petrol and diesel.

Cleaning the wheels

WARNING

Do not use high-pressure cleaners with circu-

lar-jet nozzles (dirt grinders) to clean your

vehicle, in particular the tyres. You could oth-

erwise damage the tyres and cause an acci-

dent.

Fitting awheel

Preparing the vehicle

Park the vehicle on firm, non-slippery and

level ground.

Apply the electric parking brake manually

(Y page 145).

Bring the front wheels into the straight-

ahead position.

Vehicles with manual transmission:

engage first or reverse gear.

Vehicles with automatic transmission:

move the DIRECT SELECT lever to P.

Switch off the engine.

Remove the key from the ignition lock.

If a trailer is coupled to the vehicle, uncou-

ple it.

If included in the vehicle equipment, take

the tyre-change tool kit out of the vehicle.

298

Changing awheel

Wheels and tyres

Wheels and tyres -> Tyre pressure for Your Mercedes B Class SUV First Generation (2005-2010)

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