why does my Ford Explorer Sixth Generation (2020-present) have a check brake system warning

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

536 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 'Check Brake System' warning in Ford Explorer (2020-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before inspecting the brakes to avoid burns.

Symptoms

•Check brake system warning light illuminated on the dashboard
•Spongy or soft brake pedal feel
•Unusual noises when braking (grinding or squeaking)
•Reduced braking performance
•Fluid leaks under the vehicle near the wheels

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes related to the braking system.
2
Inspect brake fluid level in the master cylinder reservoir; top off if necessary and check for contamination.
3
Visually inspect brake pads and rotors for wear or damage.
4
Examine brake lines and hoses for leaks or cracks.
5
Test the brake system components such as the brake booster and master cylinder for proper function.
6
Check the vehicle's ABS (Anti-lock Braking System) for faults or malfunctions.

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
•Brake fluid
•Socket set
•Brake pad spreader
•Torque wrench

Parts Required

•Brake pads
•Brake rotors (if necessary)
•Brake lines or fittings (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes related to the braking system.
2
Inspect brake fluid level in the master cylinder reservoir; top off if necessary and check for contamination.
3
Visually inspect brake pads and rotors for wear or damage.
4
Examine brake lines and hoses for leaks or cracks.
5
Test the brake system components such as the brake booster and master cylinder for proper function.
6
Check the vehicle's ABS (Anti-lock Braking System) for faults or malfunctions.

Solution

1. Preparation

Tools Required: OBD-II scanner, brake fluid, socket set, brake pad spreader.
Ensure the vehicle is on a level surface and securely lifted with jack stands.
Wear safety gloves and goggles for protection.

2. Address Fluid Levels and Leaks

Sub-steps:
1. Inspect the brake fluid reservoir. If the fluid is low, fill it to the recommended level with the proper brake fluid type (DOT 3 or DOT 4).
2. If fluid is contaminated or low, check for leaks in brake lines and fittings.
3. If leaks are found, replace the damaged lines or fittings and recheck fluid levels.

3. Inspect and Replace Brake Components

Sub-steps:
1. Remove the wheel to access the brake components.
2. Inspect the brake pads for wear; replace if they are below the manufacturer's minimum thickness (usually 3mm).
3. Check the rotors for scoring or wear; replace if necessary.
4. Reinstall the wheel and torque to the manufacturer's specifications (typically around 100-120 ft-lbs).

4. Test the Brake System

Sub-steps:
1. Reconnect the battery if disconnected and clear any diagnostic trouble codes using the OBD-II scanner.
2. Start the vehicle and pump the brakes to build up pressure.
3. Test drive the vehicle in a safe area to ensure braking performance is restored.