Hi every one I have a Fiat 500L MPW (7 seater) and my PARKING aid system (reverse sensor) doesn't work? I have the warning triangle and a P. I have just purchased the car and the last owner had a tow bar fitted so I'm thinking the garage maybe disconnected the reverse sensor because the tow bar made it beep? I cannot find a fuse for the sensor and fiat can't seem to advise where it is! I don't want to take the bumper of....as don't know how to? Any advice please!

You'd probably have to connect up to the system and see what the error code with it is
Assuming you can't just find the disconnect sensor cable

Also with multiecuscan you can set the system up so it ignores the towbar so it shouldn't beep detecting that I think anyway