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:
To Lock The Doors And Liftgate
Press and release the LOCK button on the RKE transmitter to lock all doors and
the liftgate. The turn signal lights will flash and the horn will chirp to acknowledge
the signal. If a door is ajar ...
Front seats
According to versions they can be fixed or adjustable in height. To raise or
lower the head restraint, press button (A) then move it to the required position
until hearing the locking click. Mak ...
Children Too Large For Booster Seats
Children who are large enough to wear the shoulder belt comfortably, and whose
legs are long enough to bend over the front of the seat when their back is against
the seatback, should use the lap/s ...