loubapache, does the tool engage through the two dogs (ie...protrude through and past them) or only to them ?

My tool is going in about 1.4" deep before it seems to bottom out. I am seeing all kinds of numbers thrown around in posts, anything from 1 1/4" to 1 1/2" deep as being where the dogs are located.

Am I understanding correctly that you have to keep pressure on the tool at the same time you pull on the tumbler/security cover ?


Ps2cho....you don't understand, the 300E is different. In the 300E, that spring on the tumbler holds neither the tumbler nor the black cover in place. On this model, the black security cover must be removed in order to remove the tumbler (they come out together). The spring on the tumbler has nothing to do with that.

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Andy_M
'98 W140 S320 Black/Black
'06 W164 ML500 AMG White/Grey
'03 Porsche 986 Midnight Blue/Grey

I don't think you understand how it works...

The mechanism is exactly the same on all w124's. The cover comes out with the tumbler, which is why you are unlocking the cover, not the tumbler. The cover holds the tumbler against the back of the cylinder, which locks it in place. You cannot remove the tumbler, like you said, without removing the cover. The spring that you access THROUGH the tumbler is to unlock the black anti-theft cover. Once that is removed, the tumbler comes out WITH the cover in your hand.

If your tool is too small, it won't be engaging the spring. My coathanger that I am using is 2mm thick -- I just measured it. I hope this helps too.

You will see what I mean once you see the mechanism from the inside.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k