I'm having a similar problem with a 1992 Lexus LS400 (1st gen). My front driver side door is locked and the lock won't fully travel, so I can't open the door. I'm not completely sure the door handle (inside or outside) is working either. The inside lock travels some of the way, but near the end (near the fully open position) it encounters resistance. When released, it sort of "snaps" back to the locked position. Is there a quick release for the LS400 as well? If so, where EXACTLY is it? Thank you again for your time!