Hi all I have got an s4 which I bought last week and have a couple of issues that I hope you lot might be able to help with. 1. My parking sensors don't work. I put them on and can hear clicking in 3 out of 4 on the front, but none at the rear. Does anyone know the part number for the front? Will this stop the rear working at all? 2. The front drivers side electric window switch only does auto down and up (one touch). Are these switches serviceable or do I need to replace it? 3. The center arm rest catch is broken. I hear its very common, but not found anyone fixing theirs. Can the latch be ordered by part number? 4. The car was a farmers car for many years so it has the farmer car smell. What's the part number of the cabin air filter and intake filter? Thanks very much guys. I have loads of plans for the car already as it is 100% stock. Definitely will keep you all up to date!