1. Faulty Wheel Speed Sensor: The ABS system relies on wheel speed sensors to detect the speed of each wheel. If a sensor malfunctions or becomes damaged, it can lead to the ABS light turning on.
2. ABS Control Module Issue: The ABS control module is the brain of the ABS system. If the control module fails or experiences a problem, it can cause the ABS light to illuminate.
3. Low Brake Fluid: If the brake fluid level is low, the ABS system may not be able to function properly, triggering the ABS light.
4. Damaged ABS Wiring: Electrical problems, such as damaged wiring or loose connections in the ABS system, can also cause the ABS light to come on.
5. Faulty Brake Light Switch: In some cases, a faulty brake light switch can affect the ABS system and lead to the ABS light turning on.
6. Faulty ABS Actuator: The ABS actuator is responsible for controlling the hydraulic pressure in the ABS system. If it malfunctions, it can cause the ABS light to come on.
To accurately determine the cause of the ABS light being on, it's recommended to have your 2003 Ford Explorer diagnosed by a qualified mechanic or technician. They will be able to use diagnostic tools to identify the specific issue and make the necessary repairs.
