One problem related to ignition switch has been reported for the 2000 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Toyota Sienna based on all problems reported for the 2000 Sienna.
Our keys would not work to start our van, we were stranded for 45 minutes with our 3 children. Dealership says broken tumbler, $250 to replace not covered by warranty. We reported same problem 5-6 months ago dealership made new key which worked briefly. Obviously a major defect, very dissappointed in Toyota.