Do take time to read the "Buying a Used Touare"g thread.
The link is in my signature.
You will learn a lot.
And if you are in the UK, join the UK site
www.mytreg.com
E-bay is the place to get the 1,000 page manual.
And when you are at the VW dealer, ask them to print of the build sheets, also known as the data sheets, for your car. EVERY owner should get these informative pages.