Turn the knurled ring to 
.
The warning light 
on the instrument
cluster will come on.
See also:
Functions And Adjustments
Turning The Car Radio On
The car radio comes on when the (ON/OFF)
button is pressed briefly.
When the car radio is turned on and the on volume limit is on, the volume is
limited to a setting of ...
Carrying children safely
For optimal protection in the event of a crash, all passengers must be seated
and wearing adequate restraint systems.
This is even more important for children.
According to 2003/20/EC Directive, t ...
Climatic comfort
Knob (D) directs the air inside the passenger compartment according to five levels:
air flow from central vents and side
outlets;
to warm the feet and keep the face cool
(“bilevel” function)
...