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:
Cooling System
WARNING!
• When working near the radiator cooling fan, disconnect the fan motor lead
or turn the ignition switch to the OFF position. The fan is temperature controlled
and can start at any time ...
If an interior light burns out
For the type of bulb and power rating, see “When needing to change a bulb”. ...
Fuse location
The fuses of the car are grouped into two fuse boxes to be found respectively
on the dashboard and in the engine compartment.
Fuse box on the dashboard
Loosen the two screws (A) and open the cover ...