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

4 min read

686 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

•Wear safety goggles and gloves for protection.

Symptoms

•Spongy or soft brake pedal feel
•Longer stopping distance than usual
•Brake warning light illuminated on the dashboard
•Unusual noises when braking (e.g., grinding or squeaking)
•Brake fluid leaking under the vehicle
•Increased pedal travel before brakes engage

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in brake lines and around the brake calipers.
3
Test the brake booster for proper operation by pumping the brake pedal with the engine off, then starting the engine to see if the pedal sinks.
4
Scan for any diagnostic trouble codes (DTCs) related to the braking system using an OBD-II scanner.
5
Inspect brake pads and rotors for wear and damage.
6
Check for air in the brake lines by performing a brake fluid pressure test.

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
•Basic hand tools
•Brake fluid
•Funnel
•Rags for spills

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake pads (if replacement is necessary)
•Brake rotors (if replacement is necessary)
•Brake booster (if found faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in brake lines and around the brake calipers.
3
Test the brake booster for proper operation by pumping the brake pedal with the engine off, then starting the engine to see if the pedal sinks.
4
Scan for any diagnostic trouble codes (DTCs) related to the braking system using an OBD-II scanner.
5
Inspect brake pads and rotors for wear and damage.
6
Check for air in the brake lines by performing a brake fluid pressure test.

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 goggles and gloves for protection.

2. Check and Replace Brake Fluid

Sub-steps:
1. Open the hood and locate the master cylinder.
2. Check the brake fluid level; if low, top off with the recommended brake fluid (DOT 3 or DOT 4).
3. If the fluid is dark or contaminated, it should be replaced.
Tools Required: Brake fluid, funnel, rags for spills.

3. Inspect and Bleed Brake Lines

Sub-steps:
1. Locate the brake bleeder valves on each caliper.
2. Attach a clear plastic hose to the bleeder valve and place the other end in a container.
3. Have an assistant pump the brake pedal several times and hold it down.
4. Open the bleeder valve to release air and fluid, then close it before the pedal is released.
5. Repeat until no air bubbles are visible in the fluid.
6. Check fluid level in the master cylinder during the process and top off as necessary.
Tools Required: Brake bleeder kit, wrench for bleeder valve, container for used fluid.

4. Inspect and Replace Brake Pads and Rotors (if needed)

Sub-steps:
1. Remove the wheel to access the brake caliper.
2. Remove the caliper bolts and lift the caliper away from the rotor.
3. Inspect the brake pads for thickness; replace if worn below specification (usually 3mm).
4. Check the rotor for warping or scoring; replace if necessary.
5. Reinstall the caliper and wheel, torque bolts to manufacturer specifications.
Tools Required: Socket set, torque wrench, jack stands.

5. Check Brake Booster

Sub-steps:
1. Inspect the vacuum line connected to the brake booster for cracks or disconnections.
2. If the booster is faulty, remove it and replace it with a new unit.
Tools Required: Basic hand tools for removal and installation.