I have a 89' 300se. My problem is that my key wont go into my driver door lock. I first saw problems with the lock a few months back where I could not lock the lock itself. Then it affected unlocking too. Now my key simply wont go into the hole. The trunk lock and passenger door lock both work well. All locks do work in the sense that the vacuum is still working with it and the car is unopenable. Basically I'm looking for a way to use my lock again. Any help with solving the lock problem would be great!