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:
Knee Impact Bolster
The Knee Impact Bolster helps protect the knees of the passenger side front passenger
by positioning the passenger for the best interaction with the Advanced Front Air
Bags.
Along with seat belts ...
Fiat Doblo Owner's Manual
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