Lexus GS 450h 2008 Owner's Manual page 134

2-1. Driving procedures
CAUTION
When driving the vehicle
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Do not shift the shift lever to "N" while the vehicle is moving.
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Doing so may cause the engine brake not to operate properly and lead to an
accident.
Do not turn the hybrid system off while driving.
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The power steering and brake actuator will not operate properly if the hybrid sys-
tem is off.
Use engine braking (downshift) to maintain a safe speed when driving down a
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steep hill.
Using the brakes continuously may cause the brakes to overheat and lose effec-
tiveness. (→P. 144)
When stopped on an inclined surface, use the brake pedal and parking brake to
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prevent the vehicle from rolling backward or forward and causing an accident.
Be careful when driving on slippery surfaces, as the vehicle may spin or skid when
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downshifting, rapidly accelerating, braking or turning.
Do not adjust the position of the steering wheel, the seat, or the inside or outside
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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.
Always check that all passengers' arms, heads or other parts of their bodies are
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not outside the vehicle, as this may result in death or serious injury.
Do not drive in excess of the speed limit. Even if the legal speed limit permits it, do
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not drive over 85 mph (140 km/h) unless your vehicle has high-speed capability
tires. Driving over 85 mph (140 km/h) may result in tire failure, loss of control and
possible injury. Be sure to consult a tire dealer to determine whether the tires on
your vehicle are high-speed capability tires or not before driving at such speeds.
The driver should pay attention to pedestrians when the vehicle is powered only
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by the electric motor (traction motor). Because there is no engine sounds, the
pedestrians may misjudge the vehicle' s movement.
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