HANDBRAKE ON (red)
Turning the ignition key to MAR the warning light turns on, but it should go off after few seconds.
Low brake fluid level
The warning light turns on when the level of the brake fluid in the reservoir falls below the minimum level, due to possible leak in the circuit.
On certain versions the dedicated message is displayed.
If the warning light 
turns on
when traveling (on certain versions together with the message on the display) stop
the vehicle immediately and contact Fiat Dealership.
Handbrake on
The warning light turns on when the handbrake is on.
On certain versions, if the vehicle is moving the buzzer will also sound.
IMPORTANT If the warning light turns on when traveling, check that the handbrake is not engaged.
See also:
Steering column lock
Engaging
When the key is to STOP or PARK remove the key and turn the steering wheel until
it locks.
Disengaging
Rock the steering wheel slightly as you turn the ignition key to MAR.
WARNING
N ...
Manually deactivating passenger’s front air bag (where required)
Should it be absolutely necessary to carry a child on the front seat, the passenger’s
air bag on the car can be deactivated.
Deactivation/reactivation takes place with ignition key at STOP and op ...
17. Oil Pressure Warning Light
This light indicates low engine oil pressure. The light should turn on momentarily
when the engine is started. If the light turns on while driving, stop the vehicle
and shut off the engine as so ...