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Old 03-28-2006, 05:58 PM
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Join Date: Apr 2005
Location: Portland, OR
Posts: 11
new ignition tumbler, but new key doesn't open door

well after many hours searching and reading the forum's advice, I got up the courage to replace the tumbler on the 300D. (diesel giant's pics are great ) this forum is so great!

turns out it took less than 20 minutes, once I got the paper clip right. (beginners luck I guess)

I ordered a VIN matched tumbler / key set. Ignition works great, but the key doesn't work in the drivers or passenger door. The new key works great on the trunk.

Is this a common problem, due to key wear...Is there any adjustment that can be done on the driver's/pass door locks? or am I now a two key car guy?

playing with the old tumbler now that it's out makes me realize I was only a couple of turns away from totally stuck, so glad it's done, but not thrilled about 2 keys.
87 300TD -"Frita"
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Old 03-28-2006, 06:19 PM
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Join Date: Nov 2004
Location: Nova Scotia, Canada.
Posts: 6,510
You could try giving the door tumblers a good lube with a proper lube of your choice before deciding the new key will not work them.
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Old 03-28-2006, 06:21 PM
Hatterasguy's Avatar
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,306
Someone probably changed the door locks in the past. Unfortinutly that happens you either have to live with it or order new locks.
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