Reverse parking aids continuously beeping

[BrianRC]

Hello everybody. Sorry, but here is another parking aid sensor topic! Hope someone can help me.

I have a problem with my rear parking aid sensors on my 54 plate X-Type 2.5lt SE Auto. I've tested all 4 sensors, and when you get up close to them, with the ignition set to the on position and reverse gear selected, they are all making a very rapid clicking noise, with the same strength of sound on each. Is this indicating that they are working okay, or not working? Does the speed of the clicking determine if they are working or not? When I'm out and about, everytime reverse gear is selected, there is a rapid bleeping from the speaker, that doesn't stop, even a long continuous beep at times. Sometimes it is even intermittent with no rhythm to it. All this happens everytime I select reverse, whether there is anything behind the car or not.

Can someone please give me some idea as to what is wrong. Is it the main control module in the boot that's faulty? Could the wiring loom have a fault somewhere?