Parking Sensor Problem

[real]

Good morning,

The parking sensors on my MrkV Golf GTI have suddenly stopped working: there is no beeping or noise from the system.

I read somewhere to check each sensor for a clicking when in reverse and there is a clicking from each sensor.

Anyone have any ideas or further steps to self-diagnose?

Thanks

 

[real]

The car has been dry due to the hot weather so I don't think it could be that unless the connections are somehow waterlogged?

 

[real]

Anyone?

 

[real]

Thanks guys, I'll give the dealer a call.