why is my Ford Explorer Fifth Generation (2011-2019) brake pedal soft and goes to the floor

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

528 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 soft brake pedal in a 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 allow the vehicle to cool before working on brakes.
•Ensure to work in a well-ventilated area and avoid contact with brake fluid, as it can damage paint and skin.

Symptoms

•Soft brake pedal feel
•Brake pedal travels to the floor
•Reduced braking effectiveness
•Possible brake warning light illuminated
•Fluid leaks under the vehicle
•Air hissing noise when the brake pedal is pressed

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, calipers, or wheel cylinders.
3
Use an OBD-II scanner to check for any brake-related error codes.
4
Inspect the brake pads and rotors for excessive wear.
5
Bleed the brake system to remove any trapped air.
6
Test the brake booster for proper operation.

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
•Wrenches
•Socket set
•Screwdriver set
•Torque wrench

Parts Required

•Brake fluid (manufacturer's specification)
•Replacement brake lines or calipers (if leaks are found)
•Brake pads and rotors (if worn)

Related Faults

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Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for any visible leaks in brake lines, calipers, or wheel cylinders.
3
Use an OBD-II scanner to check for any brake-related error codes.
4
Inspect the brake pads and rotors for excessive wear.
5
Bleed the brake system to remove any trapped air.
6
Test the brake booster for proper operation.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and secure with wheel chocks.
Disconnect the negative battery cable to prevent electrical issues.

2. Check Brake Fluid Level

Remove the cap from the master cylinder reservoir.
Inspect the fluid level; if low, top it up with the manufacturer's recommended brake fluid type.

3. Inspect for Leaks

Visually inspect brake lines, calipers, and wheel cylinders for any signs of fluid leakage.
If leaks are found, replace the damaged components with new parts.

4. Bleed the Brake System

Reconnect the negative battery cable.
Begin bleeding at the furthest wheel from the master cylinder (usually the passenger side rear).
Use a brake bleeder kit or clear tubing attached to the bleeder valve.
Pump the brake pedal several times, then open the bleeder valve to release air and fluid.
Close the valve and repeat until no air bubbles appear, then move to the next wheel.

5. Test the Brake Booster

With the engine off, pump the brake pedal several times to deplete vacuum.
Hold the brake pedal down and start the engine; the pedal should drop slightly if the booster is functioning properly.