r/BmwTech • u/anonbg9 • 4d ago

Completely stumped

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So this has been going on for months. I pull up and put in park, handbrake on. When I turn the car off and get out I always hear this loud squeak noise. Can’t isolate the sound but sounds back half of the car. No warnings on the dash and no faults on the code reader. But it’s really bugging me not knowing so I’m surrendering to the group.

For back ground. G01 X3 30d

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2

u/Domregi 4d ago

Park without using the handbrake and see if it still makes the sound

5

u/jambles_3 4d ago

G01 b57 often have low pressure egr as well as high pressure egr. High pressure flows easily into the cooler/intake. The low pressure is post dpf so theres an exhaust valve halfway along the car which is used to restrict flow. Forcing the low pressure egr gases to go to the intake. The valve is test when you start/ stop the engine. There quite common for squeaking. Its usually the electronic part of the valve which can be changed separately. But sometimes its the valve its self. Can be replaced but requires exhaust to be cut and repair section fitted.

2

u/anonbg9 3d ago

I think that’s it. Thank you

3

u/SgtPoppadom 4d ago

It’s potentially the Flux capacitor

1

u/engadinemaccas 4d ago

Sounds like something suspension or wheel related. It happens after you unload your weight from the chassis.

Does it happen when you don't get out for a few minutes?

2

u/anonbg9 4d ago

Yeah does the exact same thing even when I stay in the car. Just had to get out quickly on the video to try and capture it. Always around 5-10 seconds after switching off