One problem related to brake foundation components has been reported for the 2002 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Toyota Sienna based on all problems reported for the 2002 Sienna.
Brakes squealing at low speeds. I have repeatedly taken the vehicle in for this issue to be told it is not a safety issue - ergo, they cannot fix it.