my Ford Explorer brake pedal goes to the floor what's wrong

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

497 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 Ford Explorer. Step-by-step guide with diagnostic procedures 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 any electrical systems.
•Ensure the vehicle is securely elevated if working under it.

Symptoms

•Brake pedal feels soft or goes to the floor
•Decreased braking performance
•Potential warning lights on the dashboard
•Brake fluid leak visible under the vehicle
•Increased stopping distance

Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels.
2
Check for any visible leaks in brake lines or around the brake calipers.
3
Use an OBD-II scanner to check for any related error codes.
4
Inspect the master cylinder for signs of failure or leakage.
5
Perform a visual inspection of the brake pads and rotors for wear.
6
Check for air in the brake lines by performing a brake bleed.

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

•Brake bleeder kit
•Wrench set
•Flare nut wrench
•Torque wrench
•Turkey baster
•Safety gloves
•Safety goggles

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake lines (if damaged)
•Master cylinder (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the brake fluid reservoir for low fluid levels.
2
Check for any visible leaks in brake lines or around the brake calipers.
3
Use an OBD-II scanner to check for any related error codes.
4
Inspect the master cylinder for signs of failure or leakage.
5
Perform a visual inspection of the brake pads and rotors for wear.
6
Check for air in the brake lines by performing a brake bleed.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
Wear safety gloves and goggles for protection.

2. Inspect and Replace Brake Fluid

Sub-steps:
1. Open the brake fluid reservoir cap and check fluid quality.
2. If the fluid is contaminated or low, siphon out the old fluid using a turkey baster.
3. Refilling with appropriate brake fluid (DOT 3 or DOT 4 as specified by the manufacturer).
4. Close the reservoir cap securely.

3. Check and Repair Brake Lines

Sub-steps:
1. Inspect all brake lines for signs of corrosion, wear, or leaks.
2. If leaks are found, replace the damaged section of the brake line.
3. Use a flare nut wrench to avoid damaging fittings.
4. Bleed the brake system after repair to remove air.

4. Inspect and Replace Master Cylinder (if necessary)

Sub-steps:
1. Disconnect the brake lines from the master cylinder using a wrench.
2. Remove the master cylinder mounting bolts and detach it from the brake booster.
3. Install the new master cylinder, ensuring proper alignment.
4. Reconnect the brake lines and torque to manufacturer's specifications.

5. Bleed Brake System

Sub-steps:
1. Start with the wheel farthest from the master cylinder (usually the rear passenger side).
2. Use a brake bleeder kit or have an assistant pump the brake pedal while you open the bleeder valve to release air.
3. Close the valve before the pedal hits the floor.
4. Repeat for all wheels in the proper sequence.
5. Check the brake fluid level and top off as necessary.

Tools Required:

Brake bleeder kit
Wrench set
Flare nut wrench
Torque wrench
Turkey baster
Safety gloves and goggles

Parts Required:

Brake fluid (DOT 3 or DOT 4)
Brake lines (if damaged)
Master cylinder (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always disconnect the battery before working on any electrical systems.
Ensure the vehicle is securely elevated if working under it.