Hi Guys, My s3 has the usual story of fading buttons, so I bought a unit off ebay and tried swapping the buttons over. In the process I think I must messed with alignment of one of the buttons because my climate control turns itself on every now and then! I've now bought another climate control unit, but it's come off an A4. Looks the same, but does anyone now if the climate control from b5 A4's and 8L s3's are interchangeable? cheers.