Lexus LS460 2011 Owner's Manual page 374

2-4. Using other driving systems

Suspension control (if equipped)
• Vehicle speed is above 5 km/h (4 mph).
• The relative speed difference between your vehicle and another vehi-
cle that is forward of your vehicle, or the speed your vehicle is
approaching an obstacle is greater than 30 km/h (19 mph).

Steering gear control (VGRS) (with driver monitor system)
• Vehicle speed is above 30 km/h (19 mph).
• The relative speed difference between your vehicle and another vehi-
cle that is forward of your vehicle, or the speed your vehicle is
approaching an obstacle is greater than 30 km/h (19 mph).

Pre-crash alert braking (with driver monitor system)
• The pre-crash braking off switch is not pressed.
• The system determines that the driver is not facing forward.
• Vehicle speed is above 15 km/h (10 mph).
• The relative speed difference between your vehicle and another vehi-
cle that is forward of your vehicle, or the speed your vehicle is
approaching an obstacle is greater than 20 km/h (13 mph).
• The steering is not being turned.
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