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:
Quick windscreen and front side window demisting/defrosting (MAX-DEF function)
Proceed as follows:
❒ turn knob (A) to ;
❒ turn knob (C) to 4 ;
❒ turn knob (D) to ;
❒ slider (B) at .
After demisting/defrosting, operate the controls to restore the ...
Recirculation
Move slider (B) to .
This function is particularly useful when the outside air is heavily polluted
(in a traffic jam, tunnel, etc.). However, it is better not to use it for long periods,
especial ...
Underhood Fuses
The Front Distribution Unit is located on the right side of the engine compartment,
next to the battery. To access the fuses, press the release tabs and remove the
cover.
Front Distribution
...