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:
Windscreen/rear window wipers
BLADES
Periodically clean the rubber part using special products; TUTELA PROFESSIONAL
SC 35 is recommended.
If the rubber blades are bent or worn they should be replaced. In any case they
should ...
Brakes
IMPORTANT Water, ice and antifreeze salt on roads may deposit on the brake discs
thus reducing braking efficiency at first braking. ...
Front and side airbags
The vehicle can be fitted with front air bags for the driver and passenger and
with side bags. ...