Unfortunately, even once you replace the housing and cylinder you will still need to have it towed to a shop or dealer because the security system will no longer recognize the key and will need to be reprogrammed to use the new keys. I'm not sure why you removed all of those parts either, the stock switch uses a special 4 leg wrench that removes the locking nut from the switch and lets you remove it from behind the dash. You then disconnect the wiring and the interlock cable and swap the housings. If you broke the interlock assembly, you should be able to get that piece from a dealership. Mercedes also restricts a lot of their lock information which is why the local locksmith doesn't want to touch it.
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Wednesday, April 19th, 2023 AT 6:41 PM