Electronic Traction Control

Electronic Stability Control Explained

Today’s electronic traction control system is an extension of the ABS brake system plus torque management, reducing engine power to prevent wheel spin. This is because it uses many of the same components found in ABS. ESC automatically applies individual brake units when it senses the vehicle’s about to bulldoze ahead or spin out of control.

When the steering does not match the direction the vehicle is travelling in, the system automatically kicks into action. The control module is monitoring steering, wheel speed, and yaw rate sensors. If an emergency situation like a sudden swerve or an over or understeer occurs, it applies brake units and or reduces engine speed until the driver regains control.

ESC light

The system has many aliases: ESP Electronic Stability Program, TCS Traction Control System, and on and on. It can be disabled for driving in mud, snow or sand. A warning light will stay illuminated until switch or button is pushed and the system is reactivated. This is because deactivating the traction control program will also disable skid control.