[RearHeightSensor]

Suddenly on my car the parking sensors don't work or the camera when going into reverse, they don't even work when pressing the button and nothing lights up!. The heated windscreen and rear windscreen button doesn't light up now either.

What could have caused all this to happen at once?

I've also got a fault with the rain sensor but that has been there a few weeks now so not sure if it's all a fault with one module or not.

 

[Happyarry]

Check your fuse box in passenger well glove box, as this is suspect as DAMP can get in there.
We hear all the time of the floor pan and bulk seals being weak and failing, so there could possibly be water getting in there?

 

[RearHeightSensor]

It actually turned out to be a couple of fuses that suddenly blew so i replaced them but the rain sensor still didn't work.

I had bought another rain sensor from eBay but that also didn't work so was looking for another issue but i ended up sending that back for a refund and bought another one and now it works!. So it was the actual rain sensor all along being faulty.