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:
Key without remote control
Key (A) (or (C) in alternative), delivered in two copies when the car is not
fitted with remote control, controls the following:
❒ the ignition switch;
❒ the door and boot locks;
...
Recirculation Control
When outside air contains smoke, odors, or high humidity, or if rapid cooling
is desired, you may wish to recirculate interior air by pressing the RECIRCULATION
control button.
Recirculation mo ...
10. Cruise Indicator — If Equip
This indicator shows that the Speed Control system is on. ...