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:
Engine Oil Filter
The engine oil filter should be replaced with a new filter at every engine oil
change.
Engine Oil Filter Selection
All of this manufacturer’s engines have a full-flow type disposable oil filter.
...
Transmission
Modifications or repairs to the fuel system that are not carried out properly
or do not take the system’s technical specifications into account can cause malfunctions
leading to the risk of fire ...
Automatic Dimming Mirror — If Equipped
This mirror automatically adjusts for headlight glare from vehicles behind you.
You can turn the feature on or off by pressing the button at the base of the mirror.Alight
to the left of the button ...