why is the ABS light on in my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

615 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the ABS light issue in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to sit for a while after driving to ensure it is cool before working on the brake system.

Symptoms

•ABS light is continuously illuminated on the dashboard
•Increased stopping distance
•Brake pedal pulsating during hard braking
•Unresponsive ABS system (no ABS activation during hard stops)
•Warning lights for traction control or stability control may also be illuminated

Diagnostic Steps

1
Scan the vehicle's computer system with an OBD-II scanner for any stored trouble codes related to the ABS system.
2
Inspect the ABS wheel speed sensors for damage, dirt, or disconnection.
3
Check the ABS control module for proper connections and any signs of damage or corrosion.
4
Verify the condition of the brake fluid and ensure it is at the correct level.
5
Inspect the wiring harnesses leading to the ABS module and wheel speed sensors for any signs of wear or damage.
6
Test the ABS pump operation using a multimeter to ensure it is functioning correctly.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Jack and jack stands
•Multimeter
•Brake fluid (DOT 3 or DOT 4)
•Soft brush or cloth

Parts Required

•Wheel speed sensors (if found faulty)
•ABS control module (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer system with an OBD-II scanner for any stored trouble codes related to the ABS system.
2
Inspect the ABS wheel speed sensors for damage, dirt, or disconnection.
3
Check the ABS control module for proper connections and any signs of damage or corrosion.
4
Verify the condition of the brake fluid and ensure it is at the correct level.
5
Inspect the wiring harnesses leading to the ABS module and wheel speed sensors for any signs of wear or damage.
6
Test the ABS pump operation using a multimeter to ensure it is functioning correctly.

Solution

1. Preparation

Gather necessary tools and equipment.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the negative battery terminal to prevent electrical short circuits.

2. Inspect and Clean Wheel Speed Sensors

Sub-steps:
1. Raise the vehicle using a jack and secure it on jack stands.
2. Locate the wheel speed sensors on each wheel hub.
3. Remove any dirt or debris around the sensor area using a soft brush or cloth.
4. Disconnect the wiring harness from the sensor and inspect the connector for corrosion or damage.
5. Reconnect the sensor after ensuring it is clean.

3. Check Brake Fluid Level

Sub-steps:
1. Locate the brake fluid reservoir under the hood.
2. Check the fluid level; it should be between the minimum and maximum marks.
3. If low, add the appropriate brake fluid (DOT 3 or DOT 4, as specified by the manufacturer).

4. Inspect ABS Control Module and Wiring

Sub-steps:
1. Locate the ABS control module, typically found near the master cylinder.
2. Inspect the module for any visible signs of damage or corrosion.
3. Check the wiring harness for frays or disconnections.
4. If necessary, repair or replace damaged wiring.

5. Test ABS Pump Operation

Sub-steps:
1. Reconnect the negative battery terminal.
2. Use a multimeter to check the voltage at the ABS pump connector.
3. Activate the ABS system using a scan tool to ensure the pump engages. Listen for a clicking sound indicating operation.
4. If the pump does not engage, further diagnostics may be needed to assess the pump or control module.