One problem related to automatic transmission gear indicator has been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
While vehicle was sitting in consumer's driveway consumer's child knocked the gear shift into drive and vehicle rolled backwards, slamming into a wall across the street. The child was not hurt, but the vehicle and the wall were damaged. Vehicle's manual stated that vehicle could not be shifted into gear without a key being in the ignition.