PeachParts Mercedes-Benz Forum - View Single Post - Key won't turn in ignition, is this the dreaded bad tumbler?

andrewjtx · #2 07-28-2010, 12:08 AM

First off, I would get down to your dealer and order the replacement cylinder from your VIN.

I went ahead and replaced my lock assembly at the same time. Not something I want going bad again. And I don't recall spending $170 on it as APE lists it for. Would need to check my files.

Keep trying with the key though. You might get a small hammer and lightly tap the end of the key. Lithium grease maybe?

take your knee panel down and tap on the lock assembly as well.

But once you get the key to turn, GET THE TUMBLER OUT! Have your paperclip and what not handy. Spin that collar off and pull the switch. You do NOT want to have to resort to the grinding method on the DG site.