See also:

The concept
Indicator/warning lamps The indicator and warning lamps can light up in a variety of combinations and colors. Several of the lamps are checked for proper functioning when the engine is started ...

Engine specifications
The rated power outputs are established on the basis of fuel grade AKI 91. ...

Checking the coolant level
1. Do not open the hood until the engine has cooled down. 2. Turn the expansion tank cap counterclockwise slightly to allow any accumulated pressure to escape; then continue turning to open. ...