My problem was a broken "arm" that reaches from the lock tumbler into the door opening mechanism. To repair, the entire lock assembly must be replaced as a unit. This is a dealer-only part. They do a VIN# match to insure that the new lock works with your existing keys. Be prepared to bring proof of ownership and a picture ID.

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Jim Herold--Current: 1987 190E 16V, 1999 ML 430--Past: 1971 280 SL, 1972 250