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:
Ceiling lights
With toggling lens
To replace a bulb:
1) Remove the ceiling light fig. 35 by releasing the clipped on lens frame in
the point shown by the arrow.
2) Open the container A-fig. 36 and replace the b ...
For checking and restoring pressure only
The compressor can be also used just for restoring pressure. Disconnect the quick
connection and connect it directly to the tyre valve; in this way the cylinder is
not connected to compressor and ...
Capacities
(❒) For use with very cold temperatures we recommend using SELENIA PERFORMER
MULTIPOWER SAE 5W-30.
...