* The first place to check is the owner's manual. This will usually have a diagram of the engine compartment, which will show you where the fan belt is located and how it is routed.
* If you don't have the owner's manual, you can also find fan belt diagrams online. A simple Google search for "1999 VW Passat fan belt diagram" should bring up several results.
* Finally, you can also check with a local auto parts store. They should have a diagram of the fan belt routing for your car, and they may even be able to sell you a new fan belt if you need one.
