what can cause the brakes to feel spongy in my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

637 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 spongy brakes 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 disconnect the battery before working on electrical systems.
•Allow the brakes to cool before working on them to avoid burns.

Symptoms

•Spongy brake pedal feel when pressed
•Longer stopping distances
•Brake warning light illuminated on the dashboard
•Unusual noises coming from the brake system (e.g., grinding or squeaking)
•Brake fluid leak observed under the vehicle
•Frequent need for excessive pedal pressure to achieve braking

Diagnostic Steps

1
Inspect brake fluid level and condition in the master cylinder reservoir.
2
Check for visible leaks in brake lines, hoses, or around calipers and wheel cylinders.
3
Scan for any error codes using OBD-II scanner to check for related issues.
4
Perform a visual inspection of brake components, including pads, rotors, and calipers.
5
Test the brake pedal for firmness and observe any changes during pumping.
6
Inspect the brake booster for proper function, ensuring no air leaks are present.

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
•Funnel
•Safety gloves
•Socket set
•Torque wrench
•Brake pad spreader
•OBD-II scanner
•Vacuum gauge (if needed)

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake pads
•Brake rotors (if needed)
•Brake calipers (if needed)
•Brake booster (if needed)

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Symptoms

•Spongy brake pedal feel when pressed

•Longer stopping distances

•Brake warning light illuminated on the dashboard

•Unusual noises coming from the brake system (e.g., grinding or squeaking)

•Brake fluid leak observed under the vehicle

•Frequent need for excessive pedal pressure to achieve braking

Diagnostic Steps

1
Inspect brake fluid level and condition in the master cylinder reservoir.
2
Check for visible leaks in brake lines, hoses, or around calipers and wheel cylinders.
3
Scan for any error codes using OBD-II scanner to check for related issues.
4
Perform a visual inspection of brake components, including pads, rotors, and calipers.
5
Test the brake pedal for firmness and observe any changes during pumping.
6
Inspect the brake booster for proper function, ensuring no air leaks are present.

Solution

1. Preparation

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

2. Check and Replace Brake Fluid

Sub-steps:
1. Remove the master cylinder cap and inspect the brake fluid level.
2. If low, top off with the recommended brake fluid (DOT 3 or DOT 4 as specified).
3. If the fluid is contaminated or dark, proceed to flush the brake system.
4. Use a brake bleeder kit to remove old fluid from each brake line.
5. Fill the master cylinder with new brake fluid and bleed each brake caliper until clear fluid runs out.

Tools Required:

Brake bleeder kit
Funnel
Safety gloves

3. Inspect and Repair Brake Components

Sub-steps:
1. Remove the wheel to access brake components.
2. Inspect brake pads for wear; replace if thickness is below manufacturer's specification.
3. Check rotors for warping or scoring; machined or replaced if necessary.
4. Inspect calipers for sticking pistons or leaks; rebuild or replace if necessary.
5. Reassemble components and torque wheel lug nuts to the manufacturer's specifications.

Tools Required:

Socket set
Torque wrench
Brake pad spreader

4. Inspect the Brake Booster

Sub-steps:
1. With the engine off, press the brake pedal several times to deplete vacuum.
2. Start the engine while pressing the brake pedal; it should sink slightly indicating proper booster operation.
3. If the pedal does not sink or feels hard, inspect the vacuum line to the booster for leaks.
4. Replace the brake booster if it is defective.

Tools Required:

Vacuum gauge (if needed)
Hand tools for removal