How do you relieve the fuel system pressure on a Lexus IS300?

To relieve the fuel system pressure on a Lexus IS300, first ensure the engine is off and cool. Remove the fuel pump relay from the fuse box, then start the engine and let it run until it stalls, indicating that the fuel pressure has been relieved. After the engine stops, turn the ignition off and reconnect the fuel pump relay. Always use caution and follow safety procedures when working with the fuel system.