What causes the check brake system light to illuminate in a 2022 Ford Explorer?

Ford Explorer Sixth Generation (2020-present)

Error Codes

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Difficulty

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Severity

4 min read

658 words

Problem Statement

Learn about the causes, symptoms, and diagnostic steps for the 'Check Brake System' light in a 2022 Ford Explorer. Ensure your braking system is safe and functional.

Affected Component

braking system

Symptoms

•Illumination of the 'Check Brake System' light
•Soft or spongy brake pedal
•Grinding noise when braking
•Brake pedal goes to the floor
•Reduced braking performance
•Warning messages on the dashboard

Diagnostic Steps

1
Visual Inspection
2
Scan for Diagnostic Trouble Codes (DTCs)
3
Check Brake System Components

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

•Flashlight
•Brake fluid tester (optional)
•OBD-II Scanner
•Multimeter
•Brake system pressure gauge (if necessary)
•Jack and jack stands
•Lug wrench
•Brake caliper tool
•New brake pads
•Brake grease

Related Faults

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Solution

Understanding the Check Brake System Light in a 2022 Ford Explorer

The "Check Brake System" light in a 2022 Ford Explorer can illuminate for several reasons, indicating potential issues in the braking system. Below are common causes, symptoms, and diagnostic steps to take if this light comes on.

Common Causes

Low Brake Fluid Level
Worn Brake Pads
Malfunctioning Brake System Sensors
ABS (Anti-lock Braking System) Issues
Faulty Brake Master Cylinder
Electrical Issues or Faulty Wiring
Parking Brake Engaged

Step 1: Visual Inspection

Tools Required:

Flashlight
Brake fluid tester (optional)

Check Brake Fluid Level:
- Open the hood and locate the brake fluid reservoir.
- Inspect the fluid level; it should be between the "MIN" and "MAX" markings.
- If low, top up with the recommended brake fluid (DOT 3 or DOT 4, as specified in the owner’s manual).
Check the Condition of Brake Pads:
- Look through the wheel spokes to visually inspect the brake pads.
- If pads are worn down to less than 3mm, they should be replaced.
Inspect Parking Brake:
- Ensure the parking brake is fully released.

Step 2: Scan for Diagnostic Trouble Codes (DTCs)

Tools Required:

OBD-II Scanner

Connect the OBD-II Scanner:
- Plug the scanner into the OBD-II port, usually located under the dashboard near the driver's side.
Read DTCs:
- Follow the scanner instructions to read any stored trouble codes.
- Note down any codes related to the ABS or brake system.

Step 3: Check Brake System Components

Tools Required:

Multimeter (for electrical checks)
Brake system pressure gauge (if necessary)

Inspect Brake Lines:
- Check for any leaks in the brake lines or around brake components.
- Look for fluid stains or dampness on the brake hoses.
Test Brake Master Cylinder:
- With the engine off, pump the brake pedal several times to build pressure.
- Hold the pedal down. If it slowly sinks, the master cylinder may be faulty.
Check ABS Module:
- Inspect the wiring harness and connectors for signs of damage or corrosion.
- Use a multimeter to check for proper voltage and continuity at the ABS module.

Repair Instructions

Repairing Low Brake Fluid Level

Top Up Brake Fluid:
- Use the appropriate DOT brake fluid.
- Avoid overfilling; replace the cap securely.

Replacing Worn Brake Pads

Tools Required:

Jack and jack stands
Lug wrench
Brake caliper tool
New brake pads
Brake grease

Lift the Vehicle:
- Securely jack up the vehicle and remove the wheel.
Remove Brake Caliper:
- Unbolt the caliper from its bracket.
- Carefully slide it off and support it (do not hang it by the brake line).
Replace Brake Pads:
- Remove the old pads and install new ones.
- Apply brake grease to the backing of the pads to prevent noise.
Reassemble:
- Reinstall the caliper and wheel.
- Lower the vehicle and test the brake system.

Addressing ABS or Electrical Issues

Repair/Replace Faulty Components:
- Based on DTCs retrieved, replace or repair any malfunctioning sensors or modules.
- Ensure all wiring connections are secure and free of corrosion.
Clear DTCs:
- After repairs, clear the codes using the OBD-II scanner and test drive the vehicle to see if the light returns.

Conclusion

If the "Check Brake System" light remains illuminated after performing these checks and repairs, or if you are uncomfortable performing any of the steps, it is advisable to consult a professional technician for further diagnostic and repair work. Safety is paramount when dealing with braking systems.