2004 Toyota Sienna Owners Manual - Page 168
2004 Toyota Sienna Manual
Page 168 highlights
04 SIENNA_U (L/O 0408) If the indicator or buzzer comes on... Do this. Take vehicle to Toyota dealer. If brake system warning light is also on, stop immediately and contact Toyota dealer. (h) or (i) Close all doors. (j) Take vehicle to Toyota dealer immediately. (k) Take vehicle to Toyota dealer. (l) Adjust tire pressure. If the light remains, contact Toyota dealer. (m) Add washer fluid. (n) Replace engine oil. 168 2004 SIENNA from Aug. '04 Prod. (OM45422U)