Lexus LS460 Owners Book page 160

2-1. Driving procedures
CAUTION
When taking a nap in the vehicle
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Always turn the engine off. Otherwise, you may accidentally move the shift lever or
depress the accelerator pedal, which could cause an accident or fire due to engine
overheating. Additionally, if the vehicle is parked in a poorly ventilated area, exhaust
gases may collect and enter the vehicle, leading to death or a serious health hazard.
When braking the vehicle
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When the brakes are wet, drive more cautiously.
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Braking distance increases when the brakes are wet, and may cause one side of
the vehicle to brake differently than the other side. Also the parking brake may
not securely hold the vehicle.
If the electronically controlled brake system does not operate, do not follow other
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vehicles closely and avoid downhills or sharp turns that require braking.
In this case, even though the brakes still operate, the brake pedal should be
depressed more firmly than usual. Braking distance also becomes longer.
The brake system consists of 3 individual hydraulic systems: if one of the systems
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fails, the others will still operate. In this case, the brake pedal should be depressed
more firmly than usual and braking distance becomes longer. If this happens, do
not continue to drive the vehicle. If the brake system warning light (red indicator)
comes on together with buzzer sound while driving, immediately stop the vehicle
in a safe place and contact your Lexus dealer.
If the vehicle becomes stuck or bogged (AWD models)
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Do not spin the wheels recklessly when any of the tires is up in the air, or stuck in
sand or mud, etc. This may damage the drive system components or propel the
vehicle forward (or in another direction) and cause an accident.
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