Open the fuse box and unplug the fuel pump fuse of the Volkswagen Passat. Start the car and burn all the fuel in the fuel pump out. Once the car dies, you'll know the fuel has all burnt away.
Disconnect Power From the Vehicle
Unscrew the positive and negative cables from the battery. Disconnect them from the terminals.
Locate & Remove the Fuel Filter
The fuel filter is located under the gas tank and has the fuel line connected to each end. Slowly unscrew the input fuel line from the fuel filter. Wrap a towel around the line before pulling it off to catch excess gas in the line. Slowly unscrew the filtered output fuel line from the fuel filter. Wrap a towel around the line before pulling it off to catch excess gas in the line. Unscrew the bracket holding the filter in place.
Replace the Fuel Filter
Place the new filter in its place. Make sure the arrows point the right way and that the input and output connections are pointing the correct way. Reattach the bracket to hold the fuel filter in place. Screw the input and output fuel lines back onto the fuel filter. Reattach the battery cables. Put the fuel pump fuse back in the fuse box.