One problem related to battery dead has been reported for the 2006 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Sequoia based on all problems reported for the 2006 Sequoia.
Vehicle battery dies if the ignition is in the accesory position for 20 to 30 minutes, with just the radio on. I have brought to Toyota several times since October 2009. Battery was replaced one time. I have since been told that there does not seem to be a problem. I was even told one time that I would need a seperate marine battery hooked up in order to listen to the vehicle radio. I have never owned a vehicle that you could not listen to the radio with the ignition in the accessory position for atleast 3 plus hours. Something is drawing on this battery. It makes no sense.