hi guys, me and my brother both have the same car, 2006 2.0 tdi A4 s line. if my brother accidently leaves his window(s) open he can press and hold the lock button on his key fob and they will all close, but this does,nt seem to work on mine! surely this cant be a factory option, can it? or is there something i need to do to make mine work?? thanks in advance.