Ford Explorer Sixth Generation (2020-present) brake pedal goes to floor

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

623 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 brake pedal going to the floor in a Ford Explorer (2020-present). Step-by-step guide with symptoms and solutions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative battery terminal before working on the brake system.
•Allow the brake system to cool down before performing any maintenance.

Symptoms

•Brake pedal depresses completely with minimal resistance
•Warning light illuminated on the dashboard (brake warning light)
•Reduced braking performance or inability to stop effectively
•Brake fluid leaks observed under the vehicle
•Unusual noises (squeaking or grinding) when applying brakes

Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels.
2
Check for visible leaks in brake lines, brake calipers, and master cylinder.
3
Inspect brake pads and rotors for wear or damage.
4
Use a vacuum gauge to test for proper brake booster function.
5
Bleed the brake system to check for air in the brake lines.
6
Scan the vehicle for any ABS fault codes using an OBD-II scanner.

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
•Wrench set
•Brake line wrench
•Brake line cutter
•Flare tool
•Socket set
•Torque wrench
•Brake bleeder kit

Parts Required

•Brake fluid
•New brake lines (if damaged)
•New master cylinder (if necessary)

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Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels.
2
Check for visible leaks in brake lines, brake calipers, and master cylinder.
3
Inspect brake pads and rotors for wear or damage.
4
Use a vacuum gauge to test for proper brake booster function.
5
Bleed the brake system to check for air in the brake lines.
6
Scan the vehicle for any ABS fault codes using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and securely lifted using jack stands.
Wear safety goggles and gloves.

2. Inspect and Replace Brake Lines (if leaking)

Tools Required: Wrench set, brake line wrench, brake line cutter, flare tool.
Sub-steps:
1. Locate the source of the brake fluid leak in the lines.
2. If damaged, remove the faulty brake line using the brake line wrench.
3. Cut the new brake line to the required length and use the flare tool to create proper ends.
4. Install the new brake line and secure it using appropriate fittings.
5. Refill the brake fluid reservoir with the manufacturer-recommended brake fluid.

3. Replace Master Cylinder (if necessary)

Tools Required: Socket set, brake line wrench, torque wrench.
Sub-steps:
1. Disconnect the negative battery terminal to prevent electrical issues.
2. Remove the brake fluid reservoir and disconnect the brake line fittings from the master cylinder.
3. Unbolt the master cylinder from its mounting bracket.
4. Install the new master cylinder, ensuring that it is torqued to the manufacturer's specifications.
5. Reconnect brake lines and refill the brake fluid reservoir.

4. Bleed Brake System

Tools Required: Brake bleeder kit or clear tubing, container for fluid collection.
Sub-steps:
1. Start at the farthest brake from the master cylinder (usually the right rear).
2. Have an assistant press the brake pedal while you open the bleeder valve to allow air and fluid to escape.
3. Close the bleeder valve before the pedal is released to prevent air from entering.
4. Repeat until no air bubbles are visible in the fluid.
5. Move to the next wheel and repeat the procedure until all brakes are bled.