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:
EOBD system
The EOBD system (European On Board Diagnosis) allows continuos diagnosis of the
components of the car correlated with emissions.
It also alerts the driver, by the turning on of the warning light
...
Cruise control
Turning the ignition key to MAR, the warning light
(if present) on the instrument panel
shall turn on but it should go off after a few seconds.
The warning light on the dial comes on (on certa ...
Air Conditioner Maintenance
For best possible performance, your air conditioner should be checked and serviced
by an authorized dealer at the start of each warm season. This service should include
cleaning of the condenser f ...