Over the past year the door locks on my car (1982 240D with 219000 miles) have gotten more and more difficult to the point that they now dont lock at all.

Ignition is not a problem at all.

Keys are badly worn.

Anyone have some thoughts or suggestions for a quick fix?

Thanks,
Allan

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1973 280 - Sold
1980 300SD - Sold
1982 240D - Stolen
1988 300E - Sold
1989 260E - Sold
1989 560SEL
1994 E420 - Sold
1997 E420
2005 CL500