I have a 2002 320DSE fitted with parking sensors at the rear. Now when I engage reverse gear I get a constant tone when there's nothing behind the car and I'm told that this probably means that one of the sensors is faulty.
I believe I can test the sensors one by one by disconnecting them in turn and engaging reverse gear. Can anyone comment on this? Also can anyone explain how to actually remove the sensors? Does the bumper need to be removed?
Thanks
Jim