See also:

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

Controls
Almost all functions can be operated in the same manner as they are in the front. Special features of operating the system in the rear are described here. ...

Fuel gauge
Fuel tank capacity: approx. 14 US gal/53 liters. You can find information on refueling on page 206. If the tilt of the vehicle varies for a longer period, when you are driving in mountainous ar ...