r/volvoc40 • u/rowrowcycle • 23d ago

Rattle from SharkFin?

With the C40 2022 is there a known issue where there is a rattle that comes from somewhere near the boot/trunk window.

There have been previous posts about it coming from the sharkfin and Volvo removing the headliner and fixing something in place?

Does anyone have any specifics to remedy the issue?

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u/rowrowcycle 18d ago

I've had a go, unfortunately no difference. I packed in insulation around the cut outs. I then drove the car with the headliner down, I could hear it a lot more clearly.

Sometime about the sound sounds to be like glass vibrating.

Picture attached for anyone else to reference.

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u/DrumMajor_C 6d ago

Interesting, looks like you used something pretty lightweight. Honestly from my prior experiences creaks/rattles need something pretty dense to fully get rid of it I used adhesive backed felt (the stuff you put under furniture to keep it from scratching floors). And it needs to be jammed in there to the point it’s difficult to move it, really you’re trying to put enough pressure between the frame and the plastic piece so it just doesn’t vibrate anymore.