I had a problem with my boot lock on my X reg (2000 model) passat estate in that it wouldn't lock with central locking. Found out it was the solenoid & thought i'd let all u folks know that u don't have to buy the whole locking mechanism, u can get the part from VW & only costs £13. Part number is 1MO 959 781 A. Got my mechanic friend to fit & only took about half an hour. Hope this helps somebody