See also:

Reading lamps
Press the button. Reading lamps are located at the front and rear next to the interior lamps. With the interior lamps shut off, the reading lamps cannot be switched on. ...

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...

The concept
The tire inflation pressure is measured in the four mounted tires. The system notifies you if there is a significant loss of pressure in one or more tires. ...