I've had an annoying rattle/ vibration from the subwoofer area when I turn the volume up a bit. It occurs with the bass nots so is definitely related to the sub.

After much messing about, I've tracked it down to the removable trim panel in the boot which hides the sat nav DVD and all the othe electronic gubbins on the left hand side of the boot.

If I leave the trim panel off, no vibration noise.

Obviously this panel is removable but I want to be able to leave it in place. How can I secure it better so it doesn't vibrate?

Could you fit some draught excluder foam strip to give it some cushioning when in place. You can buy it in black so should blend in OK