2007 Toyota Sienna Owners Manual - Page 429
2007 Toyota Sienna Manual
Page 429 highlights
07 SIENNA_U (L/O 0612) CAUTION Never turn off the engine to coast down hills. Your power steering and brake booster will not function without the engine running. Also, the emission control system operates properly only when the engine is running. 429 2007 SIENNA from Oct. '06 Prod. (OM45437U)