Turning the ignition key to MAR the warning light on the dial turns on, but it should go off after few seconds.
If the warning light stays on (on certain versions together with the message on the display), you will not have steering assistance and the effort on the steering wheel will be increased, steering is however possible. Contact Fiat Dealership.
See also:
Underhood Fuses
The Front Distribution Unit is located on the right side of the engine compartment,
next to the battery. To access the fuses, press the release tabs and remove the
cover.
Front Distribution
...
Rear foglights
The warning light on the dial turns on when the rear fog lights are turned on. ...
Emergency start-up
If the Fiat code cannot deactivate the engine immobilizing system, the warning
lights stay on and the engine will
not start. Follow the emergency start-up procedure to start the engine.
Read the ...