2003 Toyota Avalon Owners Manual - Page 234
2003 Toyota Avalon Manual
Page 234 highlights
'03 AVALON U (L/O 0206) 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. 234 2003 AVALON (OM41401U)