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1991 560sec. 1969 280SL
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Take the locks and original keys to a locksmith and he can key the locks to original key. Have a spare made to but you may need the dealer for that. Call the locksmith first. Not all do that.
 

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1985 MB 500sel (Euro)
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249 Posts
thanks gogi. did that when everything worked to get extra keys. I guess I did not explain clearly. the passenger door lock cylinder was dead. the driver side door lock is now dead and to unlock door the cops used a slim jim which also broke the door latch/lock assembly. So I replaced the two door handles and also have the trunk assembly. My plan is to get a driver side latch assembly where I can, use the trunk assembly to get keys and then reconnect vacuum system and change trunk assembly. But, how do I get the keys. Locksmith, check tumblers?

Oh wait, two hours later from above. You mean take out the lock cylinders and then take them and the original key to a locksmith and ask him to reset tumblers?
 

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'87 560 SEC, Pearl Grey/blue; 300,000+ mi; '07 CLS 550, Barolo/stone; 90,000+ mi
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521 Posts
I have the same situation with my driver's door on the SEC. Would it make more sense to do this (locksmith) vs ordering a VIN-matched tumbler, and be just as reliable (especially if I order new VIN-matched keys)?
 

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1991 500SEC 50K mi. 1987 560SEC Now 153K mi. 2020
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4,401 Posts
I have the same situation with my driver's door on the SEC. Would it make more sense to do this (locksmith) vs ordering a VIN-matched tumbler, and be just as reliable (especially if I order new VIN-matched keys)?
Drew & others here.

Take a breath before jumping through the worst-case scenario solution outlined above.

Do obtain some MB Lock Grease first & apply.

See what happens, don't you think? 15-20 seconds of your time to address...... max.
If you need to do some 'heavy lifting' here you'll know soon enough.

MBL
 

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CH4S Admin , Outstanding Contributor
1985 500SEC, 1991 190E 2.6.
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40,142 Posts
What the locksmith will do is likely quite similar to the first suggested lock cylinder fix in Plinker's post #5.
With the cylinder removed, I watched a locksmith adapt a lock to the original key by inserting the key followed by filing the tumblers down flush.

Btw, I originally got the SEC with 2 original and 1 valet key. They only worked in the passenger door and ignition. They must have been worn, because 2 new keys ordered with VIN # via the dealer work in all locks.
 

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1985 MB 500sel (Euro)
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249 Posts
Thanks Teutone and Gogi. I now have a plan. Just found and bought a driver side new MB door latch on ebay, next comes the locksmith. this thread can go back to original question.
 

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1985 MB 500sel (Euro)
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249 Posts
Btw, I originally got the SEC with 2 original and 1 valet key. They only worked in the passenger door and ignition. They must have been worn, because 2 new keys ordered with VIN # via the dealer work in all locks.
[/QUOTE]

I think what you had were two working keys for the ignition and front doors, and one valet key for the trunk that also worked with everythng. With the VIN number you got two keys that fit everything. I heard that MB no longer provides keys via the VIN number, but a locksmith can make copies, which is good if the locks work.

Oops, goofed again. doofus got the upper hand. Valet key us oval shaped and does not work the trunk. square shape key opens everything. theory was that valuables which MB owners are reputed to have in excessive numbers were to be put in trunk when dining out and oval shaped key given to sneaky valets. enough
 

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CH4S Admin , Outstanding Contributor
1985 500SEC, 1991 190E 2.6.
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40,142 Posts
Btw, I originally got the SEC with 2 original and 1 valet key. They only worked in the passenger door and ignition. They must have been worn, because 2 new keys ordered with VIN # via the dealer work in all locks.
I think what you had were two working keys for the ignition and front doors, and one valet key for the trunk that also worked with everythng. With the VIN number you got two keys that fit everything. I heard that MB no longer provides keys via the VIN number, but a locksmith can make copies, which is good if the locks work.

Oops, goofed again. doofus got the upper hand. Valet key us oval shaped and does not work the trunk. square shape key opens everything. theory was that valuables which MB owners are reputed to have in excessive numbers were to be put in trunk when dining out and oval shaped key given to sneaky valets. enough
[/QUOTE]

It would surprise me if the dealer no longer takes orders for keys. I would call the dealer. Where did you hear this?


At this point changing the locks would make sense. In an ideal world you would order all new locking cylinders for doors, trunk, and ignition, with an extra key for a total of 2 new keys. But it will cost $.

The locking set you got from the wrecker would be easier to re key if you had at least one matching key and for adapting / matching the locksmith had a new un worn key via dealer and your proof of ownership = pink slip copy. Btw all Mercedes Benz USA keys etc come from Fort Worth TX. A competent locksmith can mach these to your original key, but preferably not a worn key.
Btw, if or when you pull the locking cylinder from housing, make sure not to lose / drop any tumbler bits.
It might be a good idea to have some large zip lock bags handy.

I was in a somewhat similar situation when a mechanic who worked on my SEC took off with one of my business vans and .a set of my SEC keys. At the wrecking yard, it took some time, but we managed to find a Coupe with 1 key and removed the complete set of locks incl ignition, and installed in my coupe..
I removed the cars build plaque from the cross member over radiator and kept it in an envelope with the yards receipt. Some time later we lost that key as well / I was left with no key.
I told the guys at dealer about the thief having the key for my original locks, and with my pink slip, the other SEC's build plaque and wrecker receipt, the dealer ordered 2 keys for the wrecked cars lock set and changed the info in MB Fort Worth data base, should I need additional keys in future.
For this to work you need a friendly guy at the dealer, and the build plaque of a car the does no longer exist with DMV etc.

I don't think there is a cheap and simple solution, unless you have experience with these locks yourself.
I found a post of someone resurrecting a completely frozen and even partially broken BMW 2002 lock
Repairing and Re-Keying Sticky Door Locks or search youtube
Best of luck
 

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'87 560 SEC, Pearl Grey/blue; 300,000+ mi; '07 CLS 550, Barolo/stone; 90,000+ mi
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521 Posts
Thanks for the instructive link, Teutone. It sounds like sanding down the tumblers flush is a stopgap solution, as the article mentioned it's more likely to allow other keys to operate it.

I guess the conservative, graduated approach with this is:
1. Try MB lock grease
2. Order new VIN-matched keys
3. remove, repair/replace tumbler

For the SEC handle, I wonder if the key not wanting to go in anymore and then getting stuck is a result of the white plastic shaft breaking and causing stress on the tumbler, akin to what the article talked about the metal connecting shaft getting warped over time and then causing the lever to not line up flush? Or, the keys could be worn out (even thought they work seemingly well in the passenger's door, trunk, ignition, glove box etc.
 

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1989 W124 260E
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1,529 Posts
Wont make one once of difference who you take the keys to -new key or or old if the tumblers are worn. They wear over time. Some of these locks and keys can be up to 30 years old or more . Only way is file work to level the tummblers up this will in turn allow them to turn in the barrel .I know i did this 6 years ago .The price of new are out of this world ,and the same with second hand lock sets ..Some may only need a good clean out of the 30 years of dirt build up . And then use dry graphite powder to lubricate the lock barrel and tummbler after .
 

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CH4S Admin , Outstanding Contributor
1985 500SEC, 1991 190E 2.6.
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40,142 Posts
Its pretty amazing the BMW guy was able to resurrect that door lock. Following his write up, its probably a good idea to hold on to as many tumblers as possible.
 
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