One problem related to brake pedal and linkage 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.
Distances between the gas and brake pedals were designed poorly. The pedal pad was 2x4 inches. When transferring feet from one pedal to another consumer's foot would get stuck between the pedals.