we have just purchased an Audi A4 2.0. 2007 Only 21K miles. The video shows what we started to hear today.

What I've done: I figured it might have been the belts, went to Autozone got the can of belt dressing sprayed it on the underside of the belts. No fix.

http://www.youtube.com/watch?v=r41gZuxaye8

email me joey@joeyhernandez.net
or post here. believe me I'll be following this

Additional: does the same with AC and without AC on.

 

Belt dressing is the devil. Never use belt dressing.
Could be a bad tensioner pulley, or a bad power steering pump, bad water pump...

You are under warranty. Bring it to a dealer.

 

Thanks, do you think I should try to drive it in tomorrow, or call the 24hr, free tow to the Audi dealer??

 

If the tow is free then get the tow.

 

We had it towed this morning, and have been told it was a Crank Case Breather Valve..

 

glad to see you/they figured it out. That sound was soooo annoying.

Nice username BTW ;-)

 

yeah - I can only imagine how annoying it was to drive like that...