what causes the brake pedal to go to the floor in Ford Explorer Fifth Generation (2011-2019)?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

545 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 brake pedal going to the floor in Ford Explorer 2011-2019. 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 wear safety goggles and gloves when working on brake systems.
•Ensure the vehicle is secure and elevated properly if performing undercarriage work.

Symptoms

•Brake pedal feels soft or spongy
•Brake warning light illuminated on the dashboard
•Reduced braking effectiveness or inability to stop
•Fluid leaking under the vehicle near the wheels
•Unusual noises when pressing the brake pedal (e.g., hissing or grinding)

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, hoses, and at the brake calipers.
3
Examine the condition of brake pads and rotors for excessive wear.
4
Test the brake booster for proper operation by checking for vacuum leaks.
5
Use a scan tool to check for any brake system-related error codes.
6
Bleed the brake system to check for air in the brake lines.

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

•Turkey baster
•Clean brake fluid
•Funnel
•Socket set
•Wrenches
•Brake line flaring tool (if applicable)
•Brake bleeder kit
•Clear tubing

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake lines or hoses (if damaged)
•Brake calipers (if leaking)

Related Faults

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Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, hoses, and at the brake calipers.
3
Examine the condition of brake pads and rotors for excessive wear.
4
Test the brake booster for proper operation by checking for vacuum leaks.
5
Use a scan tool to check for any brake system-related error codes.
6
Bleed the brake system to check for air in the brake lines.

Solution

1. Preparation

Gather necessary tools and parts for repair.
Ensure the vehicle is on a flat surface and secure it with wheel chocks.
Disconnect the battery to prevent electrical issues.

2. Inspect and Replace Brake Fluid

Sub-steps:
1. Remove the master cylinder reservoir cap.
2. Inspect the brake fluid for contamination; if dirty or low, replace it.
3. Use a turkey baster to remove old fluid and refill with fresh brake fluid meeting DOT specifications.
Tools Required: Turkey baster, clean brake fluid, funnel.

3. Repair or Replace Leaking Components

Sub-steps:
1. Identify and replace any damaged brake lines or hoses.
2. If leaks are found at the brake calipers, replace the calipers if necessary.
3. Tighten any loose connections and ensure proper sealing.
Tools Required: Socket set, wrenches, brake line flaring tool (if applicable).

4. Bleed the Brake System

Sub-steps:
1. Attach a clear hose to the bleeder screw on the brake caliper.
2. Have an assistant pump the brake pedal several times and hold it down.
3. Open the bleeder screw to release air and fluid, then close it before the pedal is released.
4. Repeat until no air bubbles are present in the fluid.
Tools Required: Brake bleeder kit, clear tubing, wrench.

5. Test Brake System

Sub-steps:
1. Refill the master cylinder reservoir to the proper level.
2. Reconnect the battery.
3. Start the vehicle and test the brake pedal feel; it should be firm.
Tools Required: None.