Ever since buying my E90 320d just over a year ago now, I've always dealt with the dash creak; going through bumpy roads and especially on speed bumps, basically anytime the chassis would flex so it was time to do something about it...
After doing some research I found that the strut brace was a common cause of this issue since it happens when the chassis flexes, but I checked the bolts and they're tight as a rock! which kind of explains why the dash would creak even by pushing it with my hand...
https://youtu.be/Kxr4gp4_iZo
It also seems to get worse in hot weather, maybe something to do with the dash becoming more soft/sticky because of the heat
https://youtu.be/WkL3MQjCgnI]
But I later then found a video of an audi S8 fixing the same creak sound by jamming a tube in between the dash and the window
https://www.youtube.com/watch?v=OUHOzdg44Hg
I tried to simulate this fix with my hand, and it definitely worked! as you can see in the video I jam my hand in between the window and the dash and that nasty creak seems to disappear
It does seem like a shitty fix but at least you won't hear that nasty creaking over speed bumps and imperfections in the road. Let me know if this helps!
FIX
I did the tube fix myself with a little fuel line around 10cm long from a local garage and it worked wonders! Be careful not to put a huge tube or anything can could possibly crack the windscreen
https://www.youtube.com/watch?v=duI3p2gceGE
After doing some research I found that the strut brace was a common cause of this issue since it happens when the chassis flexes, but I checked the bolts and they're tight as a rock! which kind of explains why the dash would creak even by pushing it with my hand...
https://youtu.be/Kxr4gp4_iZo
It also seems to get worse in hot weather, maybe something to do with the dash becoming more soft/sticky because of the heat
https://youtu.be/WkL3MQjCgnI]
But I later then found a video of an audi S8 fixing the same creak sound by jamming a tube in between the dash and the window
https://www.youtube.com/watch?v=OUHOzdg44Hg
I tried to simulate this fix with my hand, and it definitely worked! as you can see in the video I jam my hand in between the window and the dash and that nasty creak seems to disappear
It does seem like a shitty fix but at least you won't hear that nasty creaking over speed bumps and imperfections in the road. Let me know if this helps!
FIX
I did the tube fix myself with a little fuel line around 10cm long from a local garage and it worked wonders! Be careful not to put a huge tube or anything can could possibly crack the windscreen
https://www.youtube.com/watch?v=duI3p2gceGE
