Ok, here we go. Inside the drivers door there are switches that cam off the lock assembly and if there are issues, I would start there. Also inspect the wiring harness. The purchase of a 1989 bmw on a limited income is possibly going to test your mettle, be prepared. The central locking and wipers and windows are all affiliated with the modules under the rear seat, left side. If the relay or general module has "tin whiskers" on the circuit board, they can be the cause of the issue. Expose them and see if they can be jiggled or tapped back to life.
Saturday, August 14th, 2010 AT 10:34 AM