See also:

Office
...

Switching on automatically
Select transmission position R with the engine running. The Top View and PDC images are displayed if the system is switched on via iDrive. ...

Fuel tank capacity
Gasoline engine Fuel tank capacity: approx. 21.6 US gal/82 liters. Refuel promptly Refuel below a range of 30 miles/50 km; otherwise, engine functions are not ensured and damage may occur. ...