W126 ignition lock housing strange pin mystery - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 06-19-2019, 04:28 AM Thread Starter
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Question W126 ignition lock housing strange pin mystery

Hi guys,

W126 300SE 1987 Euro Model.

Hopefully someone will be able to solve this mystery as I searched the forums and couldn't find a clue..

Today I decided to replace the ignition tumbler, when I pulled it out it was already broken so guess I was lucky, additionally it had the "non-existing" Mercedes part number 126-462-01-79 on it (see image) which apparently is interchangeable with 123-462-04-79 , see https://www.benzworld.org/forums/w12...rt-number.html (anyway that's not important).

What worries me is that inside the ignition lock housing I noticed a loosed pin (see images), I don't know where it belongs to and if it should be there in the first place, I hope it's part of old broken tumbler but I am not sure, I am afraid it could be part of ignition lock housing, however when I compared its inside to how a new part should look at https://partsfinder.bilsteingroup.co...cle/febi/01258 I couldn't see any pin.

Please see the attached images of the broken tumbler, ignition lock housing with the pin, ignition lock housing with the pin removed and the pin outside and let me know your thoughts.

At this point I am not sure if I simply should put in a new tumbler and that's it or should I order and ignition lock housing as well (or maybe place the pin back the way I found it

Thanks in advance!

Lazlong
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post #2 of 7 (permalink) Old 06-19-2019, 12:00 PM
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Hi,

I happen to have same steering lock/ tumbler assembly laying around. To check I took the tumbler out again. There is no such part visible. Either it does not belong there or it is an internal part of steering lock assembly. It does not seem to fit trough the key slot of tumbler so it did not come in there that way or is not from tumbler. Does steering lock work now? Unless the tumbler has been out before…
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post #3 of 7 (permalink) Old 06-19-2019, 12:37 PM Thread Starter
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Quote:
Originally Posted by Heikkif View Post
Hi,

I happen to have same steering lock/ tumbler assembly laying around. To check I took the tumbler out again. There is no such part visible. Either it does not belong there or it is an internal part of steering lock assembly. It does not seem to fit trough the key slot of tumbler so it did not come in there that way or is not from tumbler. Does steering lock work now? Unless the tumbler has been out before…
Wow, thank you very much for the effort!

The steering lock appears to be working fine, I suspect someone took the tumbler out before because the lock shield cover was not aligned as it should be and I hope this pin just found its way there by mistake.

Do you have any idea how can I find a diagram of the steering lock assembly internal parts? I searched online but could not find one.

Thank you again.
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post #4 of 7 (permalink) Old 06-19-2019, 12:41 PM
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"Do you have any idea how can I find a diagram of the steering lock assembly internal parts?"

No idea.
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post #5 of 7 (permalink) Old 06-19-2019, 04:59 PM
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420SEL diagram
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Blasphemous Mike
US '87 560SEC with Euro headlights, clear markers, H&Rs, 17x8.5/Nitto's, ATE slotted rotors with ceramic pads, BergWerks FGS, 3.07 Limited Slip. '87 560SEL with Euro Headlights, lowered, 235/40/17's
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post #6 of 7 (permalink) Old 06-19-2019, 10:14 PM Thread Starter
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Thank you very much mramay, but I need a diagram of the ignition lock housing itself (part number 5 on your diagram) to try and figure if the pin I found inside is part of the mechanism.

This is the part I need the diagram for:

https://partsfinder.bilsteingroup.co...cle/febi/01258
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post #7 of 7 (permalink) Old 06-20-2019, 05:07 AM Thread Starter
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Ok, this is an update, it appears that the pin is indeed a part of the ignition lock housing mechanism, when I turned the internal part clockwise (that controls the switch) with a screwdriver a small hole was revealed which I believe the pin originally poped out from (they have the exact diameter), I also noticed that it makes a bit of metalic noise when turned so I am going to order and replace the ignition lock housing to be on the safe side.

Can the car be safely driven without the ignition lock housing installed manually using the electric switch to turn it on and off?
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