Two problems related to ignition have 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.
: the contact stated a loud rattling noise was heard coming from the engine compartment of the vehicle every time it was started. There were no indications of any additional problems. The vehicle was taken to a sales dealer three times, and the dealer was unable to duplicate the problem. Update onh 06/05/2006.
: the contact stated while driving out of a driveway at 5 mph, the vehicle stalled when acceleration was attempted. The engine warning signal illuminated. The problem had reoccured frequently at any speed. The dealership was not able to duplicate the defect in nine times the vehicle had been taken to correct the problem. The contact decided to obtain a second opinion from an independent certified mechanic who observed the coil ignition assistance burned out and the fifth cylinder was misfiring. The second opinion was ratified by another dealership. The contact expressed the dealership delayed the required repairs until the vehicle remaining warranty were exhausted. The dealership was now ready to make the repairs.