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:
18. Malfunction Indicator Light (MIL)
The Malfunction Indicator Light (MIL) is part of an onboard diagnostic system,
called OBDII, that monitors engine and automatic transmission control systems. The
light will illuminate when the k ...
23. Anti-Lock Brake (ABS) Light
This light monitors the Anti-Lock Brake System (ABS). The light will turn on
when the ignition switch is turned to the ON/RUN position and may stay on for as
long as four seconds.
If the ABS li ...
26. Odometer / Trip Odometer / Electronic VehicleInformation Center (EVIC) Display
Area
This display indicates the total distance the vehicle has been driven.
U.S. Federal regulations require that upon transfer of vehicle ownership, the
seller certify to the purchaser the correct mile ...