What is this weird sound???

BMW FOREVER · 06-21-2022, 11:12 PM

I usually start hearing this sound after the car warms up…it comes in waves as you can hear. Seems to be coming from the right side of the car. If I bend down to look under the car the sound seems louder.

Changing the gear from park to drive seems to change the sound slightly….any idea what it can be? My car is a 535i xdrive with 38k miles on it.

The first video shows the location where it seems to be the loudest but the sound is much clearer in the second video. It sounds like someone is brushing their teeth….👀

https://youtube.com/shorts/J3bUe_HNmDY?feature=share

cals · 06-23-2022, 09:31 AM

You mean the tapping noise?
Is louder from underneath the car?

Hoa · 06-23-2022, 12:16 PM

Sounds like waste gate rattle

06-21-2022, 11:12 PM	#1
BMW FOREVER First Lieutenant 164 Rep 392 Posts Drives: 2014 535i Xdrive Join Date: Feb 2014 Location: Toronto iTrader: (0)	I usually start hearing this sound after the car warms up…it comes in waves as you can hear. Seems to be coming from the right side of the car. If I bend down to look under the car the sound seems louder. Changing the gear from park to drive seems to change the sound slightly….any idea what it can be? My car is a 535i xdrive with 38k miles on it. The first video shows the location where it seems to be the loudest but the sound is much clearer in the second video. It sounds like someone is brushing their teeth….👀 https://youtube.com/shorts/J3bUe_HNmDY?feature=share Last edited by BMW FOREVER; 06-21-2022 at 11:29 PM..
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06-23-2022, 09:31 AM	#2
cals cals 8 Rep 33 Posts Drives: E34, E39, E60, F10, E70, F15 Join Date: Apr 2012 Location: Toronto iTrader: (0) Garage List 2017 BMW X5 [0.00] 2001 BMW E39 [0.00] 2004 BMW E60 [0.00] 2011 BMW F10 [0.00] 2007 BMW X5 [0.00]	You mean the tapping noise? Is louder from underneath the car?
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06-23-2022, 12:16 PM	#3
Hoa Major 513 Rep 1,356 Posts Drives: BMW Join Date: May 2010 Location: GA iTrader: (9)	Sounds like waste gate rattle
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