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:
Symbols
Special colored labels have been attached near or actually on some of the components
of your Fiat Doblò. These labels bear symbols that remind you of the precautions
to be taken as regards ...
Automatic Transmission – If Equipped
The shift lever must be in the PARK or NEUTRAL position before you can start
the engine. Apply the brakes before shifting to any driving gear.
NOTE: You must press the brake pedal before shifting ...
16. Automatic Gearbox Failure
This light will illuminate when there is an automatic transmission fault. ...