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:
Injection system failure
(Multijet versions - amber)
EOBD SYSTEM FAILURE
(petrol versions - amber)
Injection system failure
Turning the ignition key to MAR the warning light turns on but it should go off
after engine ...
Possible presence of ice on the road
Warning message will appear and temperature indication will flash on the display
when the outside temperature reaches or falls below 3°C to warn the driver of the
possible presence of ice on the ...
Number plate light
To change the bulb, proceed as follows:
❒ release the tab (A) and remove the cluster;
❒ turn the bulb holder (B) anticlockwise and remove the bulb (C). ...