The Pre-Collision System Is Operational When; Situations In Which The Pre-Collision System Does Not Function Properly - Lexus GX 460 User Manual

The pre-collision system is operational when

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Pre-collision seat belts (situation 1):
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• Vehicle speed is greater than about 4 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running
ahead of you is greater than about 19 mph (30 km/h).
• The front occupants are wearing a seat belt.
Pre-collision seat belts (situation 2):
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• Vehicle speed is greater than about 19 mph (30 km/h).
• The system detects sudden braking or skidding.
• The front occupants are wearing a seat belt.
Pre-collision brake assist:
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• Vehicle speed is greater than about 19 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running
ahead of you is greater than about 19 mph (30 km/h).
• The brake pedal is depressed.
Pre-collision braking:
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• The pre-collision braking off switch is not pressed.
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running
ahead of you is greater than about 10 mph (15 km/h).
AVS (Adaptive Variable Suspension System) control (if equipped):
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• Vehicle speed is greater than about 4 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running
ahead of you is greater than about 19 mph (30 km/h).
Pre-collision alert braking (vehicles with driver monitor system):
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• The system determines that the driver is not facing forward.
• The speed at which your vehicle is approaching the vehicle running ahead of you is
greater than about 25 mph (40 km/h).
• Vehicle speed is greater than about 25 mph (40 km/h).
• The pre-collision braking off switch is not pressed.
• The steering is not being turned.

Situations in which the pre-collision system does not function properly

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The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
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If a vehicle suddenly moves in front of your vehicle, such as at an intersection
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If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
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In inclement weather such as heavy rain, fog, snow or sand storms
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When your vehicle is skidding with the VSC system off
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When an extreme change in vehicle height occurs
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When the axis of the radar is out of adjustment
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GX460_OM_OM60L72U_(U)
4-5. Using the driving support systems
I n f o r ma t i o n P r o v i d e d b y :
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