See also:

Fuel quality
Fuels that are marked on the gas pump as containing metal must not be used. Refuel only with unleaded gasoline without metallic additives. Do not refuel with any leaded gasoline or gasoline ...

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. ...

Units of measure
Setting the units of measure To set the units for fuel consumption, route/distance and temperature: 1. "Settings" 2. "Language/Units" 3. Select the desired menu item. ...