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:
Suggestions For Obtaining Service For YourVehicle
Prepare For The Appointment
If you’re having warranty work done, be sure to have the right papers with you.
Take your warranty folder. All work to be performed may not be covered by the warranty.
...
Inflating procedure
Put on the protection gloves provided together with quick tyre repair kit.
– Pull up the handbrake. Loosen tyre inflation valve cap, take out the filler
hose A-fig. 16c and screw the ring nut B-fi ...
Access to menu screen
After the “Initial check”, it is possible to access the menu screen pressing
the button .
To surf the menu press buttons + or –.
IMPORTANT If after entering the menu no setting/adjustment is perfo ...