2004 Toyota Avalon Owners Manual - Page 249
2004 Toyota Avalon Manual
Page 249 highlights
'04 AVALON U (L/O 0408) 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. 249 2004 AVALON from Aug. '04 Prod. (OM41412U)