Possible Causes:
* Low brake fluid: This is the simplest and cheapest thing to check first. Low fluid can trigger the ABS light. Check your brake fluid reservoir (usually a clear or translucent container) and top it off if needed. If the fluid is low, you need to find the leak immediately – this is a serious safety issue.
* Faulty ABS sensor: These sensors monitor wheel speed. A damaged or dirty sensor can send incorrect signals to the ABS module, triggering the light. They are located near the wheels and can be prone to damage from road debris.
* Bad ABS module: The ABS module is the "brain" of the system. It can fail internally, causing the light to illuminate. This is a more expensive repair.
* Faulty wheel speed sensor ring: This is a toothed ring attached to the wheel hub. Damage or corrosion to this ring can disrupt the sensor's readings.
* Wiring problems: Worn or damaged wiring in the ABS system can cause intermittent or constant issues.
* ABS pump motor failure: Less common, but possible.
What to Do:
1. Check your brake fluid: This is the most important and easiest first step.
2. Have the ABS system scanned: Take your Explorer to a mechanic or auto parts store that can read OBD-II codes. The scan will provide a specific code that will pinpoint the problem area. This is crucial for accurate diagnosis.
3. Don't ignore it: Driving with the ABS light on means you've lost the ABS function. While you can still brake, you won't have the benefits of anti-lock braking in an emergency stop. This increases your stopping distance and risk of skidding.
4. Professional repair: Unless you have significant mechanical experience, attempting repairs yourself is not recommended, especially with the ABS system. A qualified mechanic can diagnose the issue and perform the necessary repairs safely and correctly.
Cost: Repair costs vary greatly depending on the specific problem. A low brake fluid level is the cheapest fix, while a faulty ABS module can be quite expensive. Expect to pay anywhere from a few dollars (for fluid) to several hundred (for parts and labor).
In short, get your vehicle scanned for diagnostic trouble codes (DTCs) as soon as possible. This will help you and your mechanic identify the root cause of the ABS light and facilitate a quicker, more cost-effective repair.
