Dashboard/passenger airbag buzz buzz buzz

[AndrewJames]

So I've been experiencing a quite annoying and noticeable rattly buzzing on the inside of the car around 2000rpm. It first appeared while showing the car off to a friend for the first time lol. I finally located it last night by reaching over and gently pressing down on the dash right above the passenger airbag panel.

I've read threads saying the bcu is a common source but I think the airbag panel must be causing it if I can stop it using the method above. Has anyone else encountered this problem? I'm wary of meddling with it lest I cause an airbag explosion

Thanks

[Vossy]

I have had this happening since I took ownership 6 years ago, always in the cooler weather and mine started about a week ago, I have removed everything from the dashboard to try and fix this problem and all without success, I removed the bcu and used closed cell foam around it along with everything else that could cause the vibration.
I have changed the engine mounts too.
The conclusion I came to is that it’s the plastic used becoming cooler.
There are many threads on here about it. I just live with it through the winter but once the interior is toasty warm and the plastic warms up all is good again.


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[AndrewJames]

Originally Posted by Vossy

I have had this happening since I took ownership 6 years ago, always in the cooler weather and mine started about a week ago, I have removed everything from the dashboard to try and fix this problem and all without success, I removed the bcu and used closed cell foam around it along with everything else that could cause the vibration.
I have changed the engine mounts too.
The conclusion I came to is that it’s the plastic used becoming cooler.
There are many threads on here about it. I just live with it through the winter but once the interior is toasty warm and the plastic warms up all is good again.


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If it is cold weather related, living in Scotland, this could be a year round problem for me I had thought of trying to stick a line of foam or something thin and soft around the back of that airbag panel but I don't want to do anything to affect its operation.

[clf]

Originally Posted by AndrewJames

If it is cold weather related, living in Scotland, this could be a year round problem for me I had thought of trying to stick a line of foam or something thin and soft around the back of that airbag panel but I don't want to do anything to affect its operation.

Remove the airbag cover and test again.

But when I had it, the buzzing noise remained until I added damping material to the bcu and bent the bracket a little.

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[AndrewJames]

Originally Posted by clf

Remove the airbag cover and test again.

But when I had it, the buzzing noise remained until I added damping material to the bcu and bent the bracket a little.

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Thanks, I will try both as I may as well. Does the airbag cover just pry off from the bottom? And did you bother to disable the airbag or disconnect the battery?

[trikey]

Just gently lever off the airbag cover from the bottom (refit the top first) the actual airbag is a good way behind the dashboard cover, you don’t need to disconnect the battery.

[suzublu]

Plastic dashes tend to squeak and rattle more than the real veneer ones

[AndrewJames]

Originally Posted by trikey

Just gently lever off the airbag cover from the bottom (refit the top first) the actual airbag is a good way behind the dashboard cover, you don’t need to disconnect the battery.

Thanks for the reassurance.

[AndrewJames]

Originally Posted by suzublu

Plastic dashes tend to squeak and rattle more than the real veneer ones

Oh yes! Everything in the car squeaks if nudged the right way

[Mogodon]

Originally Posted by AndrewJames

Oh yes! Everything in the car squeaks if nudged the right way

Including female passengers