Morning Guys, I have a 2007 Audi A3 S Line which came with factory fitted parking sensors and I have recently fitted an RNS-E Mk2. I have noticed this morning that one of my sensors had come out it's clip and fell in the bumper, soooo.... As it's a bumper off jobby can I replace my sensors with the optical set (I have 4 sensors on the rear). I know I will need a new parking module as the one I'm sure won't support it. So any help regarding part numbers etc would be great! Your help is appreciated! Cheers!