awdinut

I have a noise in my 00 A8 L (and others I have had) that I also had in several V8's I owned. The 'chattering' (for lack of a better description) noise is caused by something in the door/window frame rubbing or vibrating against something...and it has always been the case in these cars that rolling the window down an inch will stop the noise.

I thought the problem is caused by body flex moving the door/window so I am a bit confused that the much more stiff body of the A8 still has the problem. The only other clue I can offer is that the noise never happens in cold weather.

Has anyone else had this problem and does anyone know exactly what the source is and how to solve the problem?

JimR

From what you describe, I'd get some Aerospace 303 Protectant, and wipe down the door and window gaskets, first with 409 or a similar cleaner on a rag, then with Aerospace 303.

Johnnylaw98024

JimR's right...had this problem in my old S8 and a little squirt of silicone on the gaskets cured it. May have to do it on occasion to keep the rattles away. Now, with that solved, I'm off to my job moonlighting as a legislator. There oughta be a law ya know, once 3M makes a campaign contribution

Bauer

you can spray with silcon spray and it should help.

tozoM8

Silicone spray can do harm to your paint.

schnellmb

silicone can eat rubber too. 303 or Gummipflege

Bauer

sorry I was not clear on that

A8CT

Can you get aerospace 303 locally or does it need to be ordered ?

-OvO-

and it has me worried about the long-term durability of the frame. Steel is more ductile, so it can flex and still retain its strength, but aluminum should not flex as it will eventually crack. Is my ASF a "lifetime" item, just like my ZF transmission fluid?

JimR

<center><img src="http://pictureposter.audiworld.com/1018/a8_powerplant.jpg"></center><p>Don't mess around if you order it, get the big bottle. It's really great stuff. I use it on all underhood polymers, as well. It doesn't leave a sticky, dust/grit-attracting residue.