Door lock problem 1984 3SD. - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 03-22-2010, 02:49 PM Thread Starter
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Door lock problem 1984 3SD.

Took me ten minutes to figure out how to post this, so you can estimate my mental capacity, Ph.D. or not!

I recently bought a 1984 diesel 3SD to replace my 1982 300TD. 'New' car is
fine, but the driver's door lock is giving me problems. The vacuum is OK, but the key has stopped turning in the actual lock. It did work, but now it's almost as if I am using gthe wrong key. Mechanic from whom I bought the car said today when I telephoned to put the key in gently and turn it gently and not to oil the lock because he had already done so. But key will still not turn.

Any suggestions please?

With thanks, James.
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post #2 of 3 (permalink) Old 03-23-2010, 07:26 PM
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Date registered: Apr 2004
Vehicle: 85 300SD, 82 euro 500 SEC, 78 450SL
Location: Mississippi/TX
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MB sells a replacement door lock that will work with the same key. I think they're pricey but if you want to use the same key....There are places on the internet that sell replacements with a different key for around $20. If yoy don't have a manual on CD you need to get one. About $20.

85 300SD 115K
82 500 SEC euro ??K
78 450SL 164K
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post #3 of 3 (permalink) Old 03-23-2010, 08:27 PM Thread Starter
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Door lock troubles...

Many thanks for the helpful suggestion. I will check with the Mercedes company. I only have the one key, so had better try and stick with it.
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