Lexus LS460 2011 Owner's Manual page 185

2-1. Driving procedures
CAUTION

Moving the shift lever to "N" while the vehicle is moving will disengage
the engine from the transmission. Engine braking is not available when
"N" is selected.

During normal driving, do not turn off the engine. Turning the engine off
while driving will not cause loss of steering or braking control, but the
power assist to these systems will be lost. This will make it more difficult
to steer and brake, so you should pull over and stop the vehicle as soon as
it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible
to stop the vehicle in the normal way: P. 743

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. 187, 193)

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.

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.

Always check that all passengers' arms, heads or other parts of their body
are not outside the vehicle, as this may result in death or serious injury.

Do not drive the vehicle off-road.
This is not a AWD vehicle designed for real off-road driving. Proceed
with all due caution if it becomes unavoidable to drive off-road.

Do not drive across river crossings or through other bodies of water.
This may cause electric/electronic components to short circuit, damage
the engine or cause other serious damage to the vehicle.
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