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:
Glow plug warming failure
The warning light on the dial flashing (on certain versions together with the
message on the display) when there is a failure in the glow plug warming system.
Contact Fiat Dealership as soon a ...
Rear Window Features
Rear Window Defroster
The rear window defroster button is located in the center of the instrument panel,
below the radio.
Press this button to turn on the rear window defroster.
An indicator in ...
Checking the charge
The battery charge may be checked through the indicator (where fitted) set on
the battery cover and acting according to the colour the indicator shows. If the
battery is not fitted with electrol ...