Get Wheels and tyres -> Changing a wheel Guide for Mercedes CLA 4 Door First Generation (2013-2018)

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Changing a wheel

Flat tyre

You can find information on what to do in the

event of a flat tyre in the "Breakdown assis-

tance" section (Y page 294). Information on

driving with MOExtended tyres in the event of a

flat tyre can be found under "Breakdown assis-

tance" (Y page 295).

Vehicles with an emergency spare wheel: in

the event of a flat tyre, the emergency spare

wheel is fitted according to the description

under "Fitting a wheel" (Y page 319).

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.

On vehicles fitted with a tyre pressure mon-

itor, electronic components are located in the

wheel.

Tyre-fitting tools should not be applied in the

area of the valve, as this could damage the

electronic components.

Only have tyres changed at a qualified spe-

cialist workshop.

Interchanging the front and rear wheels of dif-

fering dimensions can render the general oper-

ating permit invalid.

Observe the instructions and safety notes in the

"Changing a wheel" section (Y page 318).

The wear patterns on the front and rear tyres

differ depending on the operating conditions.

Interchange the wheels before a clear wear pat-

tern has formed on the tyres. Front tyres typi-

cally wear more on the shoulders, while rear

tyres wear more in the centre.

On vehicles that have front and rear wheels of

the same size, you can interchange the wheels

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

degree of tyre wear. Ensure the direction of

rotation is maintained.

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 warn-

ing system or the tyre pressure monitor.

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Changing a wheel

Wheels and tyres

Direction of rotation

Tyres with a specified direction of rotation have

additional benefits, e.g. if there is a risk of aqua-

planing. These advantages can only be gained if

the tyres are fitted corresponding to the direc-

tion of rotation.

An arrow on the sidewall of the tyre indicates its

correct direction of rotation.

Storing wheels

Store wheels in a cool, dry and preferably dark

place if they are not being used. Protect the

tyres against oil, grease, petrol and diesel.

Fitting a wheel

Preparing the vehicle

Stop the vehicle on solid, non-slippery and

level ground.

Apply the electric parking brake manually.

Move the front wheels to the straight-ahead

position.

Vehicles with manual transmission:

depress the clutch pedal fully and engage first

or reverse gear.

Vehicles with automatic transmission:

shift the transmission to position P.

Switch off the engine.

Vehicles without KEYLESS-GO: remove the

key from the ignition lock.

Vehicles with KEYLESS-GO start-function

or KEYLESS-GO: open the driver's door.

The vehicle electronics now have status 0.

This is the same as the key having been

removed.

Vehicles with KEYLESS-GO start function

or KEYLESS-GO: remove the Start/Stop but-

ton from the ignition lock (Y page 133).

If included in the vehicle equipment, remove

the tyre-change tool kit from the vehicle.

In addition, safeguard the vehicle against roll-

ing away (Y page 155).

Apart from some country-specific variants,

vehicles are not equipped with a tyre-change

tool kit. Some tools for changing a tyre are

specific to the vehicle. For more information

on which tools are required to perform a

wheel change on your vehicle, consult a quali-

fied specialist workshop.

Necessary tyre-changing tools may include,

for example:

Jack

Wheel chock

Wheel wrench

Securing the vehicle against rolling

away

If your vehicle is equipped with a wheel chock, it

can be found in the tyre-change tool kit

(Y page 294).

The folding wheel chock is an additional secur-

ing measure to secure the vehicle against rolling

away, e.g. when changing a wheel.

Fold both plates upwards :.

Fold out lower plate ;.

Insert the lugs on the lower plate fully into the

openings in base plate =.

Place chocks or other suitable items under

the front and rear of the wheel that is diago-

nally opposite the wheel you wish to change.

Changing a wheel

319

Wheels and tyres

Raising the vehicle

WARNING

If you do not position the jack correctly at the

appropriate jacking point of the vehicle, the

jack could tip over with the vehicle raised.

There is a risk of injury.

Only position the jack at the appropriate jack-

ing point of the vehicle. The base of the jack

must be positioned vertically, directly under

the jacking point of the vehicle.

Observe the following when raising the vehi-

cle:

only use the vehicle-specific jack that has

been tested and approved by Mercedes-Benz

to raise the vehicle. If the jack is used incor-

rectly, it could tip over while the vehicle is

raised.

the jack is designed only to raise the vehicle

for a short time while a wheel is being

changed. It is not permissible to use it to per-

form maintenance work under the vehicle.

avoid changing the wheel on uphill and down-

hill slopes.

before raising the vehicle, safeguard it from

rolling away by applying the parking brake and

positioning wheel chocks. Do not release the

parking brake while the vehicle is raised.

the jack must be placed on a firm, flat and

non-slip surface. On a loose surface, a large,

flat load-bearing underlay must be used. On a

slippery surface, a non-slip underlay must be

used, e.g. use a rubber mat on tiles.

do not use wooden blocks or similar objects

as a jack underlay. Otherwise, the jack will not

be able to achieve its load-bearing capacity

due to the restricted height.

make sure that the distance between the

underside of the tyres and the ground does

not exceed 3 cm.

never place your hands or feet under the

raised vehicle.

do not lie under the raised vehicle.

do not start the engine when the vehicle is

raised.

do not open or close a door or the boot lid

when the vehicle is raised.

make sure that no persons are present in the

vehicle when raising the vehicle.

Vehicles with steel wheels: the hub cap cov-

ers the wheel bolts. Before you can unscrew the

wheel bolts, you must remove the wheel trim.

Using both hands, carefully reach into two

wheel trim openings and remove the wheel

trim.

Using wheel wrench :, loosen the bolts on

the wheel you wish to change by about one

full turn. Do not unscrew the bolts completely.

Jacking points

The jacking points are located just behind the

front wheel arches and just in front of the rear

wheel arches (arrows).

Mercedes-AMG vehicles and vehicles with

AMG equipment: to protect the vehicle body,

320

Changing a wheel

Wheels and tyres

the vehicle has covers fitted next to the jacking

points on the outer sills.

Covers, front (example: vehicles with AMG equip-

ment)

Mercedes-AMG vehicles and vehicles

with AMG equipment: fold cover ;

upwards.

Take ratchet ring spanner A out of the vehi-

cle tool kit and place it on the hexagon nut of

jack ? so that the letters AUF are visible.

Position jack ? at jacking point =.

Make sure that the base of the jack is posi-

tioned vertically under the jacking point.

Turn ratchet ring spanner A until jack ? sits

completely on jacking point = and the base

of the jack lies evenly on the ground.

Turn ratchet ring spanner A until the tyre is

raised a maximum of 3 cm from the ground.

Removing a wheel

Do not place wheel bolts in sand or dirt. The

threads of the wheel bolts and wheel hubs

could otherwise be damaged when the bolts

are tightened.

Unscrew the wheel bolts.

Remove the wheel.

Fitting a new wheel

WARNING

Oiled or greased wheel bolts or damaged

wheel bolts/hub threads can cause the wheel

bolts to come loose. As a result, you could

lose a wheel while driving. There is a risk of

accident.

Never oil or grease wheel bolts. In the event of

damage to the threads, contact a qualified

specialist workshop immediately. Have the

damaged wheel bolts or hub threads

replaced/renewed. Do not continue driving.

WARNING

If you tighten the wheel bolts or wheel nuts

when the vehicle is raised, the jack could tip

over. There is a risk of injury.

Only tighten the wheel bolts or wheel nuts

when the vehicle is on the ground.

It is imperative to observe the instructions and

safety notes on "Changing a wheel"

(Y page 318).

Only use wheel bolts that have been designed

for the wheel and the vehicle. For safety rea-

sons, Mercedes-Benz recommends that you

only use wheel bolts which have been approved

for Mercedes-Benz vehicles and the respective

wheel.

Changing a wheel

321

Wheels and tyres

Clean the wheel and wheel hub contact sur-

faces.

Place the new wheel on the wheel hub and

push it on.

Tighten the wheel bolts until they are finger-

tight.

Lowering the vehicle

WARNING

The wheels could work loose if the wheel nuts

and bolts are not tightened to the specified

tightening torque. There is a risk of accident.

Have the tightening torque immediately

checked at a qualified specialist workshop

after a wheel is changed.

Place the ratchet ring spanner onto the hex-

agon nut of the jack so that the letters AB are

visible.

Turn the ratchet ring spanner until the vehicle

is once again standing firmly on the ground.

Place the jack to one side.

Tighten the wheel bolts evenly in a crosswise

pattern in the sequence indicated (: to A).

The tightening torque must be 130 Nm.

Turn the jack back to its initial position.

Stow the jack and the rest of the vehicle tools

in the vehicle again.

Mercedes-AMG vehicles and vehicles

with AMG equipment: use the cover of the

outer sill.

Check the tyre pressure of the newly fitted

wheel and adjust if necessary.

Observe the recommended tyre pressure

(Y page 313).

If you are driving with the emergency spare

wheel fitted, the tyre pressure loss warning sys-

tem or the tyre pressure monitor cannot func-

tion reliably. Restart the tyre pressure loss warn-

ing system or tyre pressure monitor only once

the defective wheel has been replaced with a

new wheel.

Vehicles with tyre pressure monitor: all fitted

wheels must be equipped with functioning sen-

sors.

322

Changing a wheel

Wheels and tyres

Wheels and tyres -> Changing a wheel for Your Mercedes CLA 4 Door First Generation (2013-2018)

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