hi recently purchased a audi a4 2.4 v6 quattro convertable 2002..its turning out to be a nightmare...roof dont work,,,which can be fixed..hole is the flexi pipe which will be welded with a new flexi,,my issue is i cant open my boot at all,,i know you can use the key manually but not working but it was working,,,wont open electronically although i can hear the mecanism working with key and door,,i have snapped 2 keys trying to get into the boot maunaully,,,is there any other way apart from taking a hammer to it to get into the boot please...like i say i could open it manually but then seems jammed shut now,,,,oh and the horn dont work