Electric/electronic devices installed after buying the car or in aftermarket shall bear the and marking:

Fiat Auto S.p.A. authorizes the installation of transceivers provided that installation is carried out at a specialized shop, workmanlike performed and in compliance with manufacturer's specifications.
IMPORTANT
Installation of devices resulting in modifications of car characteristics may cause driving license seizing by traffic agents and also the lapse of the warranty as concerns defects due to the abovementioned modification or traceable back to it directly or indirectly.
Fiat Auto S.p.A. declines all responsibility for damages caused by the installation of non-genuine accessories or not recommended by Fiat Auto S.p.A. and installed not in compliance with the specified requirements.
See also:
Sound system
If the “Sound System” has not been requested, the vehicle features an oddment
compartment on the dashboard.
Contact a Fiat Dealership if you want to install a sound system after purchasing
your ...
Quick Guide
Radio Controls
...
Quick windscreen and front side window demisting/defrosting (MAX-DEF function)
Proceed as follows:
❒ turn knob (A) to ;
❒ turn knob (C) to 4 ;
❒ turn knob (D) to ;
❒ slider (B) at .
After demisting/defrosting, operate the controls to restore the ...


