why does my Ford Explorer Fifth Generation (2011-2019) have a hard brake pedal

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

597 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 Fifth Generation (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

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool before working on the engine components.

Symptoms

•Hard brake pedal with little to no pressure needed
•Brake warning light illuminated on the dashboard
•Reduced braking effectiveness
•Hissing sound when the brake pedal is pressed
•Difficulty in stopping the vehicle smoothly

Diagnostic Steps

1
Inspect brake fluid level in the master cylinder reservoir.
2
Check for leaks in the brake lines and around the master cylinder.
3
Test the brake booster by applying pressure to the brake pedal and starting the engine; the pedal should drop slightly.
4
Scan for any error codes using an OBD-II scanner related to the brake system.
5
Inspect the vacuum lines connected to the brake booster for any cracks or disconnections.
6
Check the condition of the brake pads and rotors for excessive 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

•OBD-II scanner
•Brake bleeder kit
•Socket set
•Wrench set
•Vacuum gauge (optional)
•Pliers

Parts Required

•Brake fluid
•Brake booster (if defective)
•Vacuum lines (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 brake fluid level in the master cylinder reservoir.
2
Check for leaks in the brake lines and around the master cylinder.
3
Test the brake booster by applying pressure to the brake pedal and starting the engine; the pedal should drop slightly.
4
Scan for any error codes using an OBD-II scanner related to the brake system.
5
Inspect the vacuum lines connected to the brake booster for any cracks or disconnections.
6
Check the condition of the brake pads and rotors for excessive wear.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and the ignition is off.
Wear safety glasses and gloves for protection.

2. Inspect and Replace Brake Fluid

Tools Required: Brake fluid, funnel, clean cloth.
Steps:
1. Open the hood and locate the master cylinder reservoir.
2. Check the fluid level; if low, top off with the manufacturer's recommended brake fluid.
3. Clean the reservoir cap before removing it to prevent contamination.

3. Check and Replace the Brake Booster

Tools Required: Socket set, wrench set, vacuum gauge (optional).
Steps:
1. Disconnect the negative battery terminal to ensure safety.
2. Remove the brake master cylinder from the brake booster by unbolting it (if applicable) and disconnecting the brake lines.
3. Unbolt the brake booster from the firewall and remove it.
4. Inspect the brake booster for any cracks or damage; replace if necessary.
5. Install the new brake booster by reversing the removal steps.
6. Reconnect the brake master cylinder and brake lines, ensuring there are no leaks.

4. Inspect and Replace Vacuum Lines (if necessary)

Tools Required: Pliers, replacement vacuum lines (if damaged).
Steps:
1. Trace the vacuum line from the engine to the brake booster.
2. Look for any visible signs of wear, cracks, or disconnections.
3. Replace any damaged vacuum lines with new ones.

5. Bleed the Brake System

Tools Required: Brake bleeder kit, clean brake fluid.
Steps:
1. Start with the wheel farthest from the master cylinder (usually the rear passenger side) and connect the bleeder kit.
2. Open the bleeder valve and pump the brake pedal until fluid flows without bubbles.
3. Repeat for all wheels in the order specified by the vehicle manufacturer.