How do I change the oil pan on a 2002 passat?

First get under the vehicle, identify your oil pan and transmission pan. Your oil pan is typically deaper than the pan on the transmission. I don't know the specific number of bolts that surround it but take those out after you've drained it using the bolt located on the bottom of your pan. You'll have to replace the seal as well. Make sure you use a putty knife and clean and scrape were the old seal was, if you don't clean it you'll have leaks. Good luck on your project.