Make sure that highway level* is selected

( Not on steel-sprung vehicles.)

Stop your vehicle as far away from traffic as possible on solid, non-slippery, level ground.

Switch on the hazard warning lamps.

Firmly depress the parking brake.

Move the selector lever to P.

All occupants must get out of the vehicle. Make sure that they are not endangered as they do so.

Make sure that no one is near the danger area whilst a wheel is being changed. Anyone who is not directly assisting in the wheel change should, for example, stand behind the barrier.

Switch off the engine.

Remove the key from the ignition lock.

Open the driver's door.

Vehicles with the AIRMATIC package* and the Off-Road Pro engineering package*:
Remove the KEYLESS GO button from the ignition lock.

Get out of the vehicle.

Close the driver's door.

Place the warning triangle more at a suitable distance. Observe legal requirements.

Do not remove any foreign objects which have penetrated the tyre, e.g. screws or nails.

Remove TIREFIT, the accompanying "max. 80 km/h" sticker and the electric air pump from the stowage well underneath the luggage compartment floor more.

Affix part  of the sticker within the driver's field of vision.

Affix part  of the sticker near the valve on the wheel with the defective tyre.

Open flap  on the electric air pump.

Pull connector and air pump hose from the housing.

Screw air pump hose  onto flange  of TIREFIT filler bottle .

Place TIREFIT sealant filler bottle head downwards into recess of the electric air pump.

Remove the cap from valve on the faulty tyre.

Make sure pressure release screw on pressure gauge  is fully closed.

Screw filler hose  onto valve .

Insert connector into the socket in the luggage compartment more or in the rear compartment more.

Press on/off switch on the electric air pump to I.

Let the electric pump run for five minutes. The tyre should then have a pressure of at least 1.8 bar.

Switch off and disconnect the electric air pump and drive the vehicle forwards or backwards approximately 10 m.

Remove TIREFIT sealant filler bottle from the electric pump.

Pump up the tyre again.

Press on/off switch on the electric air pump to 0.

Disconnect the electric air pump and stow it away.

Fold up the warning triangle and stow it away.

Pull away immediately.

Stop after driving for approximately ten minutes and check the tyre pressure with the electric air pump.

If the tyre pressure is still at least 1.3 bar, correct it (see fuel filler flap for values).

To increase the tyre pressure: switch on the electric air pump.

To reduce the tyre pressure: open pressure release screw on pressure gauge .

Drive to the nearest workshop and have the tyre changed there.

Have the TIREFIT kit replaced as soon as possible at a qualified specialist workshop, e.g. at a Mercedes-Benz Service Centre.

Have the TIREFIT kit replaced every four years at a qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.

Prepare the vehicle as described more.

If a trailer is coupled, uncouple it.

Position the wheels in the straight-ahead position.

Take the following from the stowage well beneath the luggage compartment floor:

• the wheel wrench

• the wheel chock

• the jack

Secure the vehicle to prevent it from rolling away.

On level ground: place chocks or similar items under the front and rear of the wheel that is diagonally opposite the wheel you wish to change.

On downhill gradients: place chocks or similar items under both wheels of the other axle.

Remove the spare wheel from the exterior bracket more.

Remove the "Minispare" emergency spare wheel from the stowage compartment under the luggage compartment floor more.

Using wheel wrench , loosen the bolts on the wheel you wish to change by about one full turn. Do not unscrew the bolts completely.

Position jack  at jacking point .

Make sure that the vehicle jack stands upright and perfectly straight.

Take ratchet ring spanner  from the vehicle tool kit and place it on the hexagon nut of jack so that the letters AUF are visible.

Raise the vehicle with ratchet ring spanner until the tyre is at most three centimetres off the ground.

Unscrew the uppermost wheel bolt completely.

In place of the wheel bolt, screw centring pin  from the vehicle tool kit into the thread.

Unscrew the remaining wheel bolts fully.

Remove the wheel.

Clean the wheel and wheel hub contact surfaces.

Slide the emergency spare wheel* or the spare wheel onto the centring pin and push it on.

Tighten the wheel bolts until they are finger-tight.

Unscrew the centring pin.

Tighten the last wheel bolt until it is finger-tight.

Take the electric air pump out of the stowage well under the luggage compartment floor more.

Version 1: open flap .

Version 1: pull connector and air hose out of the housing.

Version 2: pull connector and the air hose out of the housing.

Version 1: make sure that pressure release screw on the pressure gauge is closed.

Remove the cap from the valve on the tyre.

Screw union nut  on the air hose onto the valve.

Make sure on/off switch of the electric air pump is set to 0.

Insert connector into the socket in the luggage compartment more or in the rear compartment more.

Vehicles with a key: make sure that the key is turned to position 2 more in the ignition lock.

Vehicles with KEYLESS GO: press the KEYLESS GO button twice.

Press on/off switch on the electric air pump to I.

When a tyre pressure of 3.5 bar has been reached, press 0 on electric air pump on/off switch .

Version 1: open pressure release screw  on the pressure gauge until the tyre pressure is correct.

Version 2: press pressure release button until the tyre pressure is correct.

Switch off the electric air pump with on/off switch , remove from the tyre valve and stow it away.

Place the ratchet ring spanner onto the hexagon nut of the jack so that the lettering AB is visible.

Lower the vehicle by turning 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 ). The tightening torque is 150 Nm.

Turn the jack back to its initial position and stow it and the rest of the vehicle tool kit in the luggage compartment.

Wrap the faulty wheel in the protective film included with the "Minispare" emergency spare wheel* and transport the wheel in the luggage compartment.

Depending on the size of the wheel, you may also be able to secure the faulty wheel in the emergency spare wheel well. In this case, you will have to remove the stowage tray from the emergency spare wheel well and stow it securely in the luggage compartment.

Use the fastening bolts to secure the faulty wheel to the exterior spare wheel bracket*.