Turning the ignition key to MAR the warning light on the dial turns on, but it should go off after few seconds. The warning light turns on when the handbrake is on.
IMPORTANT If the warning light 
turns
on when travelling, check that the handbrake is not engaged.
With handbrake engaged, if 4 km/h speed is exceeded the buzzer will sound (only for versions with reconfigurable multifunction display).
WARNING
If the warning light 
turns on when
travelling (on certain versions together with the message on the display) stop the
car immediately and contact Fiat Dealership.
See also:
2. Rear Defrost Button
Press and release this button to turn on the rear window defroster. This indicator
will illuminate when the rear window defroster is on. The rear window defroster
automatically turns off after 2 ...
Pollen filter
The pollen filter is located under the dashboard near the central dashboard unit
on passenger side.
REPLACING THE FILTER
Loosen the screws (A) and remove the filtering element to be replaced. ...
Heated rear window
The warning light on the dial turns on when the heated rear window is turned
on. ...