Air bag failure

(red) (where provided)
Turning the ignition key to MAR the warning light turns on, but it should go off after few seconds.
The warning light stays on glowing steadily if there is a failure in the air bag system.
On certain versions the dedicated message is displayed.
If when turning the ignition key to MAR, the warning light
does not turn on or stays on when traveling there could be a failure in safety systems; in this event air bags or pretension could not trigger in case of impact or, in a minor number of cases, they could trigger accidentally. Contact Fiat Dealership immediately to have the system checked.
The failure of the warning light
(warning light off) is also indicated by the flashing for more than the normal 4 seconds of the passenger’s front air bag deactivated warning light 
Test yourself
A quick Fiat Doblo quiz: every answer comes with an explanation and a link to the manual page.