my Ford Explorer’s brake pedal goes to the floor what should I check

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

552 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 brake pedal that goes to the floor in your Ford Explorer. 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 disconnect the battery before working on electrical components.
•Allow the brake system to cool before inspecting or repairing.
•Ensure to bleed the brake system after replacing any lines to remove air.
•Always use jack stands when lifting the vehicle.

Symptoms

•Brake pedal feels spongy or goes to the floor when pressed
•Reduced braking power or delayed response
•Brake warning light illuminated on the dashboard
•Possible fluid leak under the vehicle
•Unusual noises (grinding or squeaking) when braking

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for visible leaks around brake lines, calipers, and the master cylinder.
3
Examine the condition of brake pads and rotors for wear or damage.
4
Inspect brake lines for any signs of corrosion or wear.
5
Scan for any error codes using an OBD-II scanner related to the brake system.
6
Test the brake system by pumping the pedal to see if it firms up after several presses.

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
•Wrench set
•Brake line flaring tool
•Socket set
•Brake caliper tool
•Brake bleeder kit
•Clear tubing

Parts Required

•Brake fluid (DOT 3 or DOT 4)
•Brake lines (if damaged)
•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 visible leaks around brake lines, calipers, and the master cylinder.
3
Examine the condition of brake pads and rotors for wear or damage.
4
Inspect brake lines for any signs of corrosion or wear.
5
Scan for any error codes using an OBD-II scanner related to the brake system.
6
Test the brake system by pumping the pedal to see if it firms up after several presses.

Solution

1. Preparation

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

2. Check and Refill Brake Fluid

Locate the master cylinder reservoir.
Remove the cap and check the fluid level.
If low, add appropriate brake fluid (DOT 3 or DOT 4, as specified in the owner's manual).

3. Inspect and Repair Brake Lines

Examine all brake lines for leaks or damage.
If leaks are found, replace the damaged sections of the brake lines.
- Tools Required: Wrench set, brake line flaring tool.
- Safety Warning: Ensure to bleed the brake system after replacing any lines to remove air.

4. Replace Worn Components

Remove the wheel corresponding to the affected brake.
Inspect brake pads and rotors; replace if worn beyond specifications.
- Tools Required: Socket set, brake caliper tool.
- Safety Warning: Always use jack stands when lifting the vehicle.

5. Bleed the Brake System

After repairs, bleed the brake system to remove any air.
- Start with the wheel furthest from the master cylinder and work towards the closest.
- Tools Required: Brake bleeder kit, clear tubing.
- Procedure: Have an assistant pump the brake pedal while you open and close the bleeder valve on each caliper.