Clean the Rear Park Assist sensors with water, car wash soap and a soft cloth. Do not use rough or hard cloths. In washing stations, clean sensors quickly keeping the vapor jet/high pressure washing nozzles at least 4 in (10 cm) from the sensors. Do not scratch or poke the sensors. Otherwise, you could damage the sensors.
See also:
Body and underbody warranty
Your Fiat Punto is covered by warranty against perforation due to rust of any
original element of the structure or body. For the general terms of this warranty,
refer to Warranty Booklet booklet. ...
Fan speed adjustment
Proceed as follows:
❒ open completely central vents and side outlets;
❒ turn knob (A) to the blue sector;
❒ slider (B) at ;
❒ turn knob (C) to the required speed;
...


