One problem related to brake abs warning light has been reported for the 2006 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Sienna based on all problems reported for the 2006 Sienna.
Abs light and break lights are on. Take the vehicle to a mechanic and they said that it is not the first Sienna with that problem and when both lights are on, the abs system is disabled.