Get Wheels and tires -> Emergency spare wheel Guide for Mercedes CLA 4 Door Third Generation (2025-2026)

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 diagonal

pattern in the order indicated 1 to 5 with

an initial maximum force of 59 lb- (80 Nm).

Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated 1 to 5 with

the specied tightening torque of 96 lb-

(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 qualied specialist work-

shop and have the tightening torque

checked immediately.

Check the tire pressure of the newly installed

wheel and adjust it if necessary.

The 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 321).

Vehicles with a tire pressure monitoring sys-

tem: restart the tire pressure monitoring sys-

tem (/ page 320).

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 dier. The emer-

gency spare wheel or spare wheel can signi-

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 diers

in size.

Only use an emergency spare wheel or

spare wheel briey.

Do not deactivate ESP

Have the emergency spare wheel or

spare wheel of a dierent size replaced

at the nearest qualied specialist work-

Wheels and tires

343

shop. The new wheel must have the cor-

rect dimensions.

The emergency spare wheel is secured in the

emergency spare wheel bag in the trunk.

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 aer 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 when it is installed. Correct the

pressure as necessary.

The specied tire pressure is stated on the

label of the emergency spare wheel.

Vehicles 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.

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 aer 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 315)

Tire and Loading Information placard

(/ page 322)

Tire pressure table (/ page 317)

Notes on installing tires (/ page 334)

Installing an emergency spare wheel

(/ page 338)

Inating the emergency spare wheel

NOTE Overheating due to the tire ination

compressor running too long

Do not run the tire ination compressor

for longer than ten minutes without inter-

ruption.

Requirements:

Comply with the manufacturer's safety notes on

the sticker of the emergency spare wheel and on

the tire ination compressor.

Remove the sticker with the label 50 mph

(80 km/h) from the tire ination compressor

housing and ax it to the instrument cluster

within the driver's eld of vision.

Remove the tire ination compressor from the

storage well under the trunk oor

(/ page 295).

344

Wheels and tires

Pull ller hose 1 and plug 3 out of the tire

ination compressor housing.

Insert plug 7 of ller hose 1 in the socket

on the tire ination 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 ller hose 1 onto

valve.

Make sure on and o switch 4 of the tire

ination compressor is set to

Insert plug 3 in a socket in your vehicle.

12 V socket (/ page 115)

Observe the notes on sockets (/ page 115).

Press the start/stop button once to switch on

the power supply (/ page 136).

Press on and o switch 4 on the tire ination

compressor to

The tire ination compressor is switched on.

The tire is inated. The tire pressure is shown

on manometer 5.

Pump the tire to the specied tire pressure.

The specied tire pressure is stated on the

label of the emergency spare wheel.

When the specied tire pressure has been

reached, press on and o switch 4 on the

tire ination compressor to

The tire ination compressor is switched o.

Press the start/stop button to switch o the

power supply.

If the tire pressure is higher than the specied

pressure, press pressure release valve button

6 until the correct tire pressure has been

reached.

Unscrew union nut 2 of ller hose 1 from

the valve.

Screw the valve cap of the emergency spare

wheel onto the valve again.

Store ller hose 1 and plug 3 in the lower

section of the tire ination compressor hous-

ing.

Store the tire ination compressor in the vehi-

cle.

Wheels and tires

345

Wheels and tires -> Emergency spare wheel for Your Mercedes CLA 4 Door Third Generation (2025-2026)

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