Turning the key to MAR the warning light on the dial turns on, but it should go off as soon as the engine is started.
If the 
warning light turns on when
the car is travelling (on certain versions together with the message on the display),
stop the engine immediately and contact a Fiat Dealership.
See also:
Clock mode (Clock Mode)
This function is used to set the clock in the 12h (12 hour) or 24h (24 hour)
mode. To adjust proceed as follows:
...
EOBD system
The EOBD system (European On Board Diagnosis) allows continuos diagnosis of the
components of the vehicle correlated with emissions.
Furthermore, the system warns the driver of deterioration concer ...
Snow tyres
These tyres have been specially designed for driving on snow or ice, to be fitted
in place of the standard tyres.
Use snow tyres of the same size as the standard tyres provided with the vehicle.
F ...