Hi guys, My OEM rear parking sensors have stopped working on my 2004 Tourer. When I engage reverse gear and start reversing I get a constant tone for 2 - 3 seconds then nothing other than some ticking I can hear from the rear of the car. I have carried out a search on here for possible causes and remedial action however, being a non DIY person, I'm unclear as to the best course of action for me. I understand that it could be a faulty sensor or the controller may be faulty. Furthermore, I believe it's a case of disconnecting one sensor at a time from the controller to identify the faulty one. However, as I said, I'm really not a DIY person so ideally I'm not looking to get down and dirty with the car to pinpoint the problem. Any advice on the options that are open to me would be most welcome. Thanks in advance, Steve ps: apologies if this exact problem has been covered before.