2007 Lexus GS 350 Owners Manual - Page 169

2-1. Driving procedures CAUTION n When driving the vehicle l Do not under any circumstances shift the shift lever to "P", "R" or "N" while the vehicle is moving. Doing so can cause significant damage to the transmission and may result in a loss of vehicle control. l Do not shift the shift lever to "N" while the vehicle is moving. Doing so may cause the engine brake not to operate properly and lead to an accident. l Do not turn the engine off while driving. 2 When driving The power steering and brake actuator (GS430) or brake booster (GS350) will not operate properly if the engine is not running. l Use engine braking (downshift) to maintain a safe speed when driving down a steep hill. Using the brakes continuously may cause the brakes to overheat and lose effectiveness. (→P. 102) l When stopped on an inclined surface, use the brake pedal and parking brake to prevent the vehicle from rolling backward or forward and causing an accident. l Be careful when driving on slippery surfaces, as the vehicle may spin or skid when downshifting, rapidly accelerating, braking or turning. l Do not adjust the position of the steering wheel, the seat, or the inside or outside rear view mirrors while driving. Doing so may result in a loss of vehicle control that can cause accidents that may result in death or serious injury. l Always check that all passengers' arms, heads or other parts of their bodies are not outside the vehicle, as this may result in death or serious injury. 93