rear parking sensors

[hardytangi]

hi folks
i have had the car for a month know and touch wood no problem yet apart from the rear parking sensor don't work.
when reverse gear is engaged it make the beep noise for a few sec but goes silent even if there is something at the rear.
The car is Audi A6 2001 .

 

[oxford_hippo]

Hi - I've got a similar problem - but only intermittent. ( 2002, A6 avant, 1.9Tdi )

I think a long beep is supposed to be the reversing sensors telling you they have a fault.

Can anyone suggestion any connectiosn to look for / check that might be causing this?