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:
Instrument panel
1.4 8V - 1.3 Multijet - 1.9 М versions
A - Speedometer (speed indicator)
B - Fuel level gauge with reserve warning light
C- Engine coolant temperature gauge and max. temperature warning light
D ...
5. High Beam Indicator
This light indicates that the headlights are on high beam. Pull the turn signal
lever toward the steering wheel to switch the headlights to low beam. ...