My pdc worked great for years and then I had issues with sensors and false distances. When it was raining and the sensors got wet (one in particular) the system just squealed and gave false distances. I eliminated which sensor was playing up and replaced it. I have noted they work less efficiently when wet. I now spray the sensors with silicon spray regaularly which seems to solve the problem of false proximity readings.

Also now have fitted a reversing camera in the rear number plate light/handle and also have an emergency driving camera too inside the rear cabin window. No probs reversing now even in heavy rain, snow whatever.

 

It was the speaker. It was the same price at the dealership as it was at rovers north, but without the shipping and I could pick it up the same day.
Just popped of the access door by the trunk for frame on the drivers side took off two 7mm bolts and plugged it in. Works like a charm now.
Blurry picture attached... there is one of the headliner we redid too.