See also:

Deleting all stored programs
Press the left and right memory buttons for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted. The programs cannot be deleted individually. ...

Programmable memory keys
General informationiDrive functions can be stored on the programmable memory keys and called up directly, e.g. radio stations, navigation destinations, phone numbers and entry points into the menu ...

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. ...