No, I had to change the tumbler in the ignition b/c of the common problem where the ignition gets sticky and stops turning. I ordered a new ignition tumbler off the internet and it came with a new/its own key. I think toomany is right about the front driver's door. The question remains though, why will the back door not lock? The button presses down as if locked, but when you pull on the outside handle the lock button just pops up and the door opens as if it was never locked in the first place. I need to get that fixed before I move back into the city.

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1983 300D TurboDiesel