Anti-Lock Brake System (ABS) and Stability Control: Overview

The ABS and stability control system is comprised of the following subsystems which assist the driver in maintaining control of the vehicle:

• ABS
• EBD
• ESC
• Hill start assist
• Supplemental braking assist
• Supports adaptive cruise control
• Supports collision avoidance
• Traction control

The ABS helps maintain steering control by preventing the wheels from locking up during hard braking. The ABS also includes a brake assist function to provide maximum brake system pressure during a severe braking situation.

The EBD system helps to maintain vehicle control by keeping a balanced braking condition between the front and rear wheels.

The ESC system helps to prevent skids or lateral slides by activating portions of the base ABS.

The hill start assist system is designed to assist the driver during hill starts. Using the ABS, the hill start assist system holds the vehicle on an incline for a short time, allowing the driver to release the brake pedal and press the accelerator pedal without needing to use the parking brake.

The supplemental braking assist system uses the hydraulic pump motor and HCU to provide additional braking assist in the event of a severe vacuum loss at the brake booster, to maintain the distance gap set by the adaptive cruise control system or to aid in the avoidance of forward collisions.

For information on the adaptive cruise control system, refer to Cruise Control - Adaptive .

For information on the collision avoidance system, refer to Collision Avoidance .

The traction control system helps to prevent loss of traction by reducing drive-wheel spin during acceleration.