why does my Ford Explorer Fifth Generation (2011-2019) brake pedal feel spongy

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

569 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 a spongy brake pedal 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

•Disconnect the battery before working on electrical systems.
•Allow the brakes to cool down before servicing to avoid burns.

Symptoms

•Spongy or soft brake pedal feel
•Increased stopping distance
•Brake warning light illuminated on the dashboard
•Fluid leaks near the wheels or under the vehicle
•Unresponsive brakes during initial engagement

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible brake fluid leaks around the brake lines, calipers, and wheel cylinders.
3
Examine the condition of brake pads and rotors for wear or damage.
4
Test the brake booster for proper operation by pressing the pedal and checking for a vacuum assist.
5
Scan the vehicle for any brake-related diagnostic trouble codes (DTCs) 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
•Brake bleeder kit
•Socket set
•Torque wrench
•Turkey baster or syringe

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake pads (if replacement is needed)
•Brake rotors (if replacement is needed)

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Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for any visible brake fluid leaks around the brake lines, calipers, and wheel cylinders.
3
Examine the condition of brake pads and rotors for wear or damage.
4
Test the brake booster for proper operation by pressing the pedal and checking for a vacuum assist.
5
Scan the vehicle for any brake-related diagnostic trouble codes (DTCs) using an OBD-II scanner.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and securely lift it with jack stands.
Disconnect the battery to avoid any electrical issues during the repair.

2. Inspect and Replace Brake Fluid

Remove the cap from the master cylinder reservoir.
Use a turkey baster or syringe to extract old brake fluid.
Fill the reservoir with the recommended brake fluid type (DOT 3 or DOT 4).

3. Bleed the Brake System

Start with the wheel farthest from the master cylinder (right rear).
1. Attach a clear plastic hose to the bleeder valve on the brake caliper.
2. Place the other end of the hose in a container filled with brake fluid.
3. Have an assistant pump the brake pedal several times, then hold it down.
4. Open the bleeder valve to release air and fluid, then close it before the assistant releases the pedal.
5. Repeat until no air bubbles are visible in the fluid.
Move to the next wheels in this order: left rear, right front, and finally left front.

4. Inspect and Replace Brake Components (if necessary)

Check the brake pads for wear; replace if thickness is below the minimum specification (usually 3 mm).
Inspect brake rotors for warping or excessive wear; replace if necessary.
Ensure that the calipers are functioning properly and not sticking.

5. Final Checks

Refill the master cylinder to the appropriate level with new brake fluid.
Reconnect the battery.
Test the brake pedal for firmness before taking the vehicle for a test drive.