Your vehicle may be equipped with:
- TIREFIT kit
- a "Minispare" emergency spare wheel
- MOExtended tires (tires with run-flat properties)

Vehicle preparation is not necessary on vehicles with MOExtended tires.

Vehicles equipped with MOExtended tires are not equipped with a TIREFIT kit at the factory. It is therefore recommended that you additionally equip your vehicle with a TIREFIT kit if you mount tires that do not feature run-flat properties, e.g. winter tires.
A TIREFIT kit can be obtained from an authorized Mercedes-Benz Center.

– Make sure that highway level is selected.
– Stop the vehicle on solid, non-slippery and level ground, as far away as possible from traffic.
– Switch on the hazard warning lamps.
– Engage the electric parking brake manually.
– Bring the front wheels into the straightahead position.
– Move the DIRECT SELECT lever to P.
– Switch off the engine.
– Vehicles without KEYLESS-GO: remove the SmartKey from the ignition lock.
– Vehicles with KEYLESS-GO: open the driver's door.
The on-board electronics have status 0, which is the same as the SmartKey having been removed.
– Vehicles with KEYLESS-GO: remove the Start/Stop button from the ignition lock.
– 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 while a wheel is being changed.
Anyone who is not directly assisting in the wheel change should, for example, stand behind the barrier.
– Get out of the vehicle. Pay attention to traffic conditions when doing so.
– Close the driver's door.
– Unload heavy luggage.

Only operate the tire inflation compressor using a 12 V socket (Y page 297), even if the ignition is turned off.
An emergency cut-off ensures that the onboard electrical system voltage does not drop too low. If the on-board electrical system voltage is too low, power to the sockets is automatically cut off. This ensures that there is sufficient power to start the engine.