how to fix the hard brake pedal issue on my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

588 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 hard brake pedal issue 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 engine to cool before working in the engine compartment.

Symptoms

•Brake pedal feels very firm and requires increased pressure to engage
•Reduced braking responsiveness or effectiveness
•Hissing noise from under the dashboard when braking
•Illuminated brake warning light on the dashboard
•Difficulty stopping the vehicle in a timely manner

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for any vacuum leaks in the brake booster hose.
3
Test the brake booster by pumping the brake pedal with the engine off, then starting the engine to see if the pedal drops slightly.
4
Scan for any diagnostic trouble codes (DTCs) related to the brake system using an OBD-II scanner.
5
Inspect the brake booster for any signs of damage or wear.

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
•OBD-II scanner
•Vacuum gauge
•Brake line wrench

Parts Required

•Brake booster (if damaged)
•Vacuum hose (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the brake fluid level in the master cylinder reservoir.
2
Check for any vacuum leaks in the brake booster hose.
3
Test the brake booster by pumping the brake pedal with the engine off, then starting the engine to see if the pedal drops slightly.
4
Scan for any diagnostic trouble codes (DTCs) related to the brake system using an OBD-II scanner.
5
Inspect the brake booster for any signs of damage or wear.

Solution

1. Preparation

Tools Required: Socket set, OBD-II scanner, vacuum gauge.
Ensure the vehicle is parked on a flat surface, and wear safety goggles and gloves.

2. Inspect and Replace the Brake Booster

Locate the brake booster on the driver's side of the engine compartment.
Disconnect the negative battery terminal to prevent electrical shorts.
Remove the brake master cylinder by unbolting it from the brake booster and disconnecting the brake lines (use a line wrench to prevent stripping).
Remove the vacuum hose connected to the brake booster.
Unbolt the brake booster from the firewall and carefully pull it out.
Inspect the brake booster for any signs of damage or leaks. If damaged, replace it with a new or remanufactured unit.
Install the new brake booster by reversing the removal steps, ensuring all bolts are torqued to the manufacturer's specifications (typically around 15-20 ft-lbs).

3. Check and Repair Vacuum Supply

Visually inspect the vacuum hose for cracks or disconnections.
If the hose is damaged, replace it with a new vacuum hose rated for automotive use.
Use a vacuum gauge to test the vacuum supply from the engine. It should read between 18-22 inHg at idle. If it’s low, check for engine performance issues or additional vacuum leaks.

4. Reassemble and Bleed Brake System

Reconnect the brake master cylinder and brake lines, ensuring they are secure and free of leaks.
Reconnect the negative battery terminal.
Bleed the brake system to remove any air that may have entered during the repair process. Start at the furthest wheel and work your way to the nearest.
Check the brake fluid level and top off as necessary.