Quote:
Originally Posted by weiln12
@Jay - No, I wasn't going to. In all that I've read I've never heard anyone mention the knock sensors. Do those need to be replaced?
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I am under the impression that they last for a very long time. They reside underneath the cooling tray in the middle of the engine. I am with you that I have not really heard anything about knock sensors on the V8 equipped X5 E53s. I think I will not change mine when I run through my engine to fix the leaks.