J
3
Answers

Why does my BMW M6 sometimes make a loud screeching noise?

I've noticed that sometimes when I start my BMW M6, it makes a loud screeching noise. It doesn't happen all the time, but when it does it's quite alarming. Any idea what could be causing this?

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Answers (3)

E

It sounds like your serpentine belt may be worn or loose. This can cause it to slip and make a screeching noise. I would recommend having it checked and possibly replaced to avoid any potential issues.

A

I had the same issue with my M6 and it turned out to be a faulty tensioner pulley. It's an easy fix, but definitely something you should have looked at sooner rather than later.

J

Another possibility could be a problem with the alternator. If it's not charging properly, it can cause the belt to slip and make a noise. You may want to have your charging system checked.

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