The warning light on the dial comes on when a failure is detected.
See also:
Front fog lights
Contact Fiat Dealership to have front fog lights A-fig. 22 replaced.
...
Glow plugs
Turning the ignition key to MAR, the warning light on the dial comes on and goes
off when glow plugs reach the preset temperature. Start the engine immediately after
warning light switching off. ...
Follow me home
The warning light on the dial comes on (on certain versions together with the
message on the display) when the "Follow me home" device is activated (see "Follow
me home" in ...