Warning light comes on on the dial when front passenger air bag is deactivated.
With front passenger air bag on, turning the ignition key to MAR, warning light
comes on flashing on the cluster for
about 4 seconds, then it flashes for other 4 seconds and then it shall go off.
WARNING
Warning light indicates also
warning light 
failure. This is indicated
by intermittent flashing, over 4 seconds, of warning light
. In this event, warning light
could be not up to indicate restraint
system failures, if any. Stop the car and contact Fiat Dealership to have the system
checked.
See also:
Right-hand direction indicator
The warning light on the dial turns on when the direction indicator control lever
is moved upwards or, together with the left indicator, when the hazard warning light
button is pressed. ...
Heated rear window
The warning light on the dial turns on when the heated rear window is turned
on. ...
Sidelights and low beams
The warning light on the dial turns on when sidelights, parking lights or low
beams are turned on. ...