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:
Driver’s front air bag
It consists of an instant-inflating cushion contained in a special recess in
the centre of the steering wheel. ...
Heating
Proceed as follows:
❒ rotate knob (A) (pointer on -) completely to the right;
❒ turn knob (C) to the required speed;
❒ move knob (D) to:
to warm the feet and at the same time ...
Glow plug warming failure
The warning light on the dial flashing (on certain versions together with the
message on the display) when there is a failure in the glow plug warming system.
Contact Fiat Dealership as soon a ...