The warning light on the dial comes on (on certain versions together with the message on the display) when dieel fuel filter sensor failure is detected. Contact Fiat Dealership as soon as possible to have the fault removed.
See also:
If an exterior light burns out
For the type of bulb and power rating, see “When needing to change a bulb”. ...
Headlights
ADJUSTING THE HEADLIGHT BEAM
The correct positioning of the headlight beams is very important for the comfort
and safety, not only of the person driving the vehicle but also all other road users.
...
ABS intervention
It is signalled by the blinking of the warning light á on the instrument panel,
to inform the driver that the car is in critical stability and grip conditions. ...