Quote:
Originally Posted by LarryBible
If it is one of the temp sensors at the rear, drivers side of the head I don't understand why there is a problem. I use a deep socket, extension and ratchet and change one in less than five minutes. You need to have the new one all ready to go in so that you don't risk losing coolant.
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This one is too fat to get a deep socket over and down to the head.
If your replacing it you can just use a vise-grip and crush the sensor... then hand tighten as best you can should be fine... I did this and it hasn't leaked.
I think the proper tool is a very thin right angled crescent... but this is one of those jobs that makes you question the usually praisworthy Mercedes engineers.