Saving new reference values for tire inflation pressure monitoring*
In order for the tire pressure monitoring system1 to function correctly, tire pressure reference values must be saved correctly. To help ensure that the system can correctly alert the driver of low inflation pressure, this must be done each time the tires are changed or the inflation pressure is adjusted.
To store the new inflation pressure as a reference value in the system:
Switch off the ignition.
Inflate the tire to the correct inflation pressure; see the tire pressure placard on the driver's side B pillar for recommended pressures for factory-mounted tires.
Start the vehicle.
Tap 
in the center display.
in the center display.Tap Car status.
Tap Store pressure. When the inflation pressure is stored, the vehicle must be on and stationary.
If storing cannot be performed, a message will be displayed.
Warning
The exhaust gases contain carbon monoxide, which is invisible and odorless but very poisonous. The procedure for saving a new inflation pressure must therefore always be performed outdoors or in a workshop with exhaust gas extraction.