NickC-300D

Hi Everyone,

I just purchased my second 1976 300D. Drives wonderfully, but this evening, the key got stuck in the passenger side door. Any suggestions?

Thanks,
Nick

optimusprime m1

Will your key have a hole through it.If not drill one through,so you can put a screwdriver through and pull .It should come out . Its worn and needs work doing on them,they fill with dirt old grease,and the tumblers inside wear out .So, if and when it comes out, it wants cleaning . You will need a penetrating oil spray get it in the lock give it a good soak .Then oil the lock .And if it will not work after that you will need to replace the lock barrel.This is how i did mine dont know if yours are the same.

NickC-300D

Surprisingly, pulling the key and the inside door handle at the same time loosened the key enough to pull it out. I did spray some WD40 in the keyhole as well, but that initially didn't do the trick. Maybe a combo of the two, but either way, the key is out!

optimusprime m1

Nick i think you will need to keep cleaning it with penetrating oil. Do it a few times.Then light oil. WD 40 is not a lubricant but water dispersant .Any problems after that and you may need to replace the lock barrel As i see you have a 76 300D so it may not be the same lock as yours.

optimusprime m1

Loking like replacing the whole handle.But untill its out you dont know if replacment of just the barrel can be done .I will keep looking for you.

optimusprime m1

Looking in a few places on the net . These might help in the future,put in -
- Mercedes W123 Repair IFIXIT
also- Diesel Giant. and , Questions and Answers for Mercedes Benz Repair ... you will need to put them in to Google search box to get you there.

fredschoettmer

Try putting some lube and try pulling and twisting key while pulling the door handle. If it doesn't work, have it checked by a professional.