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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

636 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 issue in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always wear safety glasses and gloves when working with brake fluid, as it can damage paint and is hazardous.
•Ensure the vehicle is securely supported on jack stands if lifted.

Symptoms

•Soft brake pedal feel
•Brake pedal travels to the floor
•Reduced braking effectiveness
•Possible warning lights on the dashboard
•Unusual noises when braking

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in the brake lines and around the wheel cylinders or 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 drops.
4
Scan the vehicle for any fault codes related to the ABS or brake system using an OBD-II scanner.
5
Inspect the brake pads and rotors for wear or damage.
6
Bleed the brake system to remove any air pockets.

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

•Socket set
•Brake bleeder kit
•Wrench set
•OBD-II scanner
•Container for old brake fluid

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Replacement brake lines
•Brake pads and rotors

Related Faults

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Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for visible leaks in the brake lines and around the wheel cylinders or 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 drops.
4
Scan the vehicle for any fault codes related to the ABS or brake system using an OBD-II scanner.
5
Inspect the brake pads and rotors for wear or damage.
6
Bleed the brake system to remove any air pockets.

Solution

1. Preparation

Gather tools: socket set, brake bleeder kit, wrench set, OBD-II scanner, and a container for old brake fluid.
Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
Put on safety glasses and gloves.

2. Check and Replenish Brake Fluid

Open the hood and locate the brake master cylinder reservoir.
Inspect the brake fluid level; if low, add the appropriate type of brake fluid (DOT 3 or DOT 4 as specified in the owner's manual).
If the fluid is contaminated or old, consider flushing the brake system.

3. Inspect for Leaks

Visually inspect all brake lines, hoses, and connections for signs of fluid leaks.
Check around each wheel for leaks from brake calipers or wheel cylinders.
If leaks are found, replace the damaged components.

4. Brake Booster Check

With the engine off, pump the brake pedal several times to deplete any vacuum.
Start the engine while pressing the brake pedal; if the pedal drops slightly, the brake booster is functioning correctly. If not, the booster may need replacement.

5. Bleed the Brake System

Begin at the wheel farthest from the master cylinder (usually the passenger rear).
Attach the brake bleeder kit and have an assistant press the brake pedal while you open the bleeder valve to release air and fluid. Close the valve before the assistant releases the pedal.
Repeat the process on each wheel (passenger rear, driver rear, passenger front, driver front) until no air bubbles are present in the fluid.

6. Verify Brake Components

Inspect brake pads and rotors for wear. Replace any worn or damaged components.
Reassemble any removed parts and ensure all fasteners are torqued to manufacturer specifications.