Karrera4

I have noticed an odd sound coming from either somewhere in the backseat area or inside the back of the driver-side front seat. It is not a normal rattle, but almost like something is loose and rolling around in there. It happens when I am turning or changing directions at with slight g-forces (ie, going thru a round-a-bout). I have looked under the front seat like 5 times and cant locate anything that would be causing it there. Next step it to have wife drive it and ride in the rear seat. It is intermittent...and less annoying but now just baffling to me that I cannot find it. Anyone else ever have anything similar?

MP4.2+6.0

Indirectly ran into something like this--maybe D3 A8 or old C5 A6. Some small object ended up in the floor vent for the rear HVAC under the seat and would move around on the inside ABS plastic type flat surface. Pulled off duct cover trim and there it was.

Karrera4

You are the man with all the answers...didn't even think to put the front seat all the way up and look at that. Will do tomorrow.

andyza8

For what it's worth, I had exactly the same issue: seat needed to come out, as part of the rear carpet needed to be lifted up to gain access -- it was a small pebble in the HVAC duct outlet below the seat…