Go to Main Function Group 80 (Central Locking System). On the Sub-Function menu you will find 13 sub groups ranging from; sub group 010 -- Functional description; to sub-group 900 -- Functional diagrams

These sections should guide one with a bit of knowledge of tools and mechanics through the diagnosis and repair process.

I think using this info along with the lock repair hints bgkast posted should get you up and running.

Good luck with it!

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1998 E300 +310,000K
1996 E300 +460,000K

I just got in for a minute and saw the responces. Thanks . I don't have the time now to do anything with it, but I'll try tomorrow. I'll post my results.