There was a TSB put out on this (I brought it to my dealer years ago and got them to install LATCH free during the warranty period). That TSB should list the parts and part numbers. Your dealer will have it.
See this thread
http://www.passatworld.com/forums/showthread.php?t=220634
Unfortunately the TSB PDF is no longer available but if you call VW's customer care 800# they should confirm that this is a free dealer install for you. If the dealer can't find it then they need to talk to corporate about this.
See this thread
http://www.passatworld.com/forums/showthread.php?t=220634
Unfortunately the TSB PDF is no longer available but if you call VW's customer care 800# they should confirm that this is a free dealer install for you. If the dealer can't find it then they need to talk to corporate about this.