2006 Toyota Sienna Owners Manual - Page 366

06 SIENNA_U (L/O 0603) The "AIRBAG ON" and "AIRBAG OFF" indicator lights will be illuminated initially when the ignition key is turned to the "ON" position. After about 4 seconds, they will go off. After that, the front passenger occupant classification system operates and judges which indicator light be illuminated. The SRS warning light and "AIRBAG OFF" indicator light will come on if there is a malfunction in the front passenger occupant classification system. 134 2006 SIENNA from March '06 Prod. (OM45443U)