I have an 85SD for parts and need to rekey the 84SD passenger door lock and ignition lock. I already have the 85 passenger door handle out to use for parts. Is there any advantage to taking one or the other ignition lock, door lock or trunk lock when the main reason to remove them is to have enough wafers for the project?

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

I would do whatever I could to keep the key pattern the same as original. MB keeps a record of the key cut according to the VIN and if you ever sell the car someone is going to be very confused when they try to order a VIN specific key if the locks no longer match.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

If you change the keyed part beware that the electrical plug is fastened very securely on the back of the switch assembly. If you don't unfasten it you'll break something.

Don't ask how I know.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

There are at least 3 keys for the car I'm working on and I have no idea what the correct key is. I could order a key from the dealer and match that. The locks all work. I'm inclined to match the keys to my other SD which is original and I have the title to and know the keys match the VIN.

I only need some more wafers to make a match and wonder if a given lock is easier to remove from the parts car - door, ignition, trunk. I also have several glove box doors with locks of unknown origin but no keys in case they will be useful.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

Try the MB Classic center, they are a little more liberal on the key issue than a dealer especially if the car is 30+ years old. I've ordered keys for an early 80s 123 with only a scanned license and registration emailed to them.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

it is possible to copy the key pattern from one lock to another if that is needed. just pull out and write down the leaves in order.

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'77 240D, 504H, OM617.952, etc.

Great idea!


Doing this with pics would be a great DIY!!!

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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

This may sound like a silly question but do you pretty much need to have locksmith skills and some locksmith tools to do this? I have always been interested but have been intimidated about fooling with the lock insides.

About twenty years ago my Indy replaced my ignition switch so the key does not match the door locks and I have never really been happy about that. Everything else is stock and this bothers me.

There are already threads on how to handle the leaves. I was just wondering whether 1 lock is easier to pull than the other and whether the locks are all acceptable to use for parts. I guess I'll find out when it quits raining.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

@ty, you do not need locksmith skills. Remove lock per FSM.

Search Rekey Mercedes lock. The lock comes apart once the tumbler is on the bench and you remove the key.

Clean the leaves and replace to match the key you want. You may need some spares to have enough leaves.

A view of the vids will clarify.

Thx.

i was able to figure it out on the workbench by taking notes as i went. it does take fine motor skills to handle those little springs.

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'77 240D, 504H, OM617.952, etc.

The difference between the 84SD and the 85SD is an extra switch to activate the door pump for the later model, on the passenger side. I've never had mine apart so I'm not sure what the actual physical differences are.

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Sam

84 300SD 350K+ miles ( Blue Belle )

FYI-the ignition can be pulled in a w123 without drilling anything. I've done it in my driveway to replace work leaves.

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