Variable Effort Steering Description

The Variable Effort Steering (VES) system varies the driver effort required to steer as vehicle speed changes. At low speeds, the system provides maximum power assist for easy turning and parking maneuvers. At higher speeds, steering assist is decreased to provide the driver with firmer steering (road feel) and directional stability.
The VES system accomplishes this by reducing power steering fluid flow from the pump as vehicle speed increases. When the vehicle is stationary, the system provides maximum flow. As vehicle speed increases, fluid flow is decreased.