Anti-Lock Brake System (ABS) and Stability Control - Overview
Overview
The ABS and stability control systems are comprised of the following subsystems which assist the driver in maintaining control of the vehicle:
- ABS
- EBD
- EPB control
- ESC
- Hill start assist
- RSC
- Selectable driving modes
- Supports adaptive cruise control
- Supports collision avoidance
- Traction control
The ABS helps maintain steering control during hard braking by preventing wheel lock up. The ABS also includes a brake assist function which provides maximum brake system pressure during a severe braking situation.
The EBD system helps maintain vehicle control by keeping a balanced braking condition between the front and rear wheels.
The ABS module is the ECU for the electric parking brake system. For information on the electric parking brake system, Refer to: Parking Brake - System Operation and Component Description .
The ESC system helps prevent skids or lateral slides by modulating brake fluid pressure to individual brake calipers and reducing engine torque.
The hill start assist feature 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 RSC system helps prevent excessive vehicle roll by modulating brake fluid pressure to individual brake calipers and reducing engine torque.
The ABS supports the adaptive cruise control system by applying the brakes as necessary to maintain the distance gap set by the driver. For information on the adaptive cruise control system, Refer to: Cruise Control - Vehicles With: Adaptive Cruise Control With Lane Centering - Overview .
The ABS supports the collision avoidance system by monitoring information and precharging the brake system allowing the vehicle to stop in the shortest distance possible. For information on the collision avoidance system, Refer to: Collision Warning and Collision Avoidance System - System Operation and Component Description .
There are 3 selectable drive modes; Engage, Unbridled and Whisper. Each mode slightly modifies powertrain, steering, braking and suspension response and feel to provide different driving experiences.
The traction control system helps prevent loss of traction by reducing drive-wheel spin during acceleration.
Some noise from the system and pulsations in the brake pedal are normal conditions during most ABS and stability control system activations. Longer than normal brake pedal travel may also be experienced during or immediately following an ABS or stability control system activation.