I would guess you're talking about the button on the center console under the ashtray. You slide the domed console forward to reveal the button. Hope this helps.
Unlock the access panel behind the passenger seat, and there is a handle to pull on.
The 2001 Audi A4 has a 5-speed manual.
The 2001 Audi TT has a 5-speed manual.
2001 Audi S4 TT roadster
replace the comfort control module Audi tt in trunk
From E-bay or possibly Amazon.com
right click and "save as" of course..
In the trunk.
In the trunk !
As long as your car is fuel injected, it has a throttle body. Yes, your Audi has a throttle body.
I don't know if there is a difference but in my 2006 Audi S4, it is located in the trunk.
In the trunk.