Hi, I've got an early year 2000 Passat with a boot lock which works intermittently. I'm on the third motorised locking mechanism in as many weeks none of which have managed to work properly for more than four days. This motorised mechanisn simply jams and when removed from the boot lid requires quite an effort to free up. Once freed and reinstalled it continues to work for another three or four days before packing in again. Is this a pet fault or is there any way to solve it. All advice appreciated.