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:
Body and underbody warranty
Your Fiat Punto is covered by warranty against perforation due to rust of any
original element of the structure or body. For the general terms of this warranty,
refer to Warranty Booklet booklet. ...
Maintenance Procedures
The pages that follow contain the required maintenance services determined by
the engineers who designed your vehicle.
Besides those maintenance items specified in the fixed maintenance schedule,
...
Battery
The battery is of the “Limited maintenance” type: under normal conditions of
use the electrolyte does not need topping up with distilled water.
CHECKING THE CHARGE fig. 22
The battery charge may b ...