When the knurled ring is at 
push
the lever towards the dashboard (stable position).
The warning light 
on the instrument
cluster will come on.
Pulling the lever towards the steering wheel again, the main beams are turned off and the dipped beams on.
See also:
Manual climate control system
...
High temperature engine coolant fluid
Turning the ignition key to MAR the warning light on the dial turns on, but it
should go off after few seconds.
The warning light turns on (on certain versions together with the message on
th ...
Interiors
Periodically check that water is not trapped under the mats (due to water dripping
off shoes, umbrellas, etc.) which could cause oxidisation of the sheet metal.
CLEANING SEATS AND FABRIC AND VELVET ...