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Home >> Lexus >> 2007 >> LX 470 >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> OEM System Circuits >> VGRS System >> System Outline >> VGRS System Main Function
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VGRS System Main Function

* In the extremely low-speed range, which is used when the driver is attempting to park the vehicle, this system changes the steering gear into the smallest gear ratio in order to reduce the driver's steering angle.

* In the low- to medium-speed range, which is used when driving on city streets or on a winding road, this system changes the steering gear ratio to an optimal level in accordance with the vehicle speed. As a result, the vehicle responds with more agility and handles more easily.

* In the high-speed range, the steering gear ratio is set to the maximum level to prevent the vehicle from making over-sensitive movements in response to the driver's steering angle. Thus, this system ensures a stable vehicle response.

* If a vehicle that is driven over a road surface with different friction coefficients brakes suddenly and causes the ABS to activate, the vehicle posture becomes disrupted, thus requiring the driver to operate the steering wheel. When this occurs, the steering gear ratio is rendered even smaller than that of the ordinary VGRS system in order to reduce the driver's steering angle.