The warning light on the dial turns on (on certain versions together with the message on the display) when the car exceeds the speed limit set previously (see “Reconfigurable multifunction display” in the “Dashboard and controls” section).
See also:
Recommended Shift Speeds
To use your manual transmission for optimal fuel economy, it should be upshifted
as listed in the following table
...
Vehicle protection system failure -Fiat code
(amber)
Turning the key to MAR the warning light shall flash only once and then go off.
If with the ignition key at MAR, the warning light stays on, this indicates a
possible failure (see “Fiat ...
17. Oil Pressure Warning Light
This light indicates low engine oil pressure. The light should turn on momentarily
when the engine is started. If the light turns on while driving, stop the vehicle
and shut off the engine as so ...