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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions 330i vibration noises - exhaust heat shields?

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      11-03-2019, 01:19 AM   #1
nugz
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330i vibration noises - exhaust heat shields?

Hey guys,

There's a loud high-pitched vibration noise I'm hearing from the ?exhaust on cold starts. I've had my car for 2 months and it's done over 3,500km (bought as demo).

I took it to the dealer this week. The service advisor was quite shocked and had never heard it before. It picked it up yesterday with no noise, but it has returned this morning.

This is the job description record: "Carry out start up of the vehicle. No noise present at time of testing. The vehicle had been driven and was warm. Need to perform cold start. Carry out cold start and confirmed noise was coming from the vehicle. Lift vehicle up on the hoist and found the exhaust heat shields loose knocking on exhaust. Carry out refitment of the exhaust shields. Test multiple times all okay."

I've found very few comments on Bimmerpost regarding the same issue, but the thread was more about squeaking noises from the trunk seals.

Anyone else experiencing this? Appreciate your help.

Back to the dealership I go...
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      11-04-2019, 07:02 PM   #2
chris_portimaog20
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I have the noise issues
1. rattle noise from the center console > solution is to apply felt tape and sound gone
2. rattle noise from exhaust on cold start for 1-2 min, I'm pretty sure I saw another thread on this subject but if I remember correctly it is a normal noise from exhaust valve and changing muffler is the only definitive solution. someone correct me if I'm wrong
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      11-14-2019, 12:34 PM   #3
napekbezklapek
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Hi,
Chris could you tell me where exactly did you have center console noise? I have problem with this plastic behind center screen - it starts vibrating around 3k rpm.
Rattle noise during cold start in my opinion is normal as we have active exhaust system.
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      11-15-2019, 03:25 AM   #4
A6bullet
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Quote:
Originally Posted by napekbezklapek View Post
Hi,
Chris could you tell me where exactly did you have center console noise? I have problem with this plastic behind center screen - it starts vibrating around 3k rpm.
Rattle noise during cold start in my opinion is normal as we have active exhaust system.
Seems like center speaker rattle. There's a DIY thread on how to fix it by adding felt tape. Or you could take it in to the dealer and have them fix it.
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