One problem related to ignition has been reported for the 2004 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Tundra based on all problems reported for the 2004 Tundra.
Started truck, connected small trailer to hitch. I noticed lights on trailer not on got out of truck to plug and unplug connector. Lights came on. Entered truck , put foot on brake to put in gear. The engine revved up and the tach. Was fluctuating between 1000 and 6500 rpm without ever touching the accelerator. I turned the ignition to the off position. Scared to restart, I let it sit for five minutes then started engine. Everything ran normal and I proceeded to drive home. This had never occurred before or since this incident. I did not report this to Toyota since the recall models were other than my 2004 Toyota Tundra .