One problem related to other fuel system hoses lines/piping, and fittings has been reported for the 2004 Lexus LX470. The most recently reported issues are listed below.
The fuel tank was venting repeatedly and audibly when operating at speeds below 30 mph altitudes of 3500 feet and more on numerous occasions. The gasoline in the tank could be heard boiling also. When the gas cap (oem) was removed, gasoline vapors escaped continuously under pressure for at least 15 minutes.