Why is my 2020 Ford Explorer making a grinding noise when braking?

Problem: Grinding Noise When Braking on a 2020 Ford Explorer

Possible Causes:

• Worn brake pads.
• Metal-to-metal contact between the brake pad and rotor.
• Contaminated brake components (dirt, debris, or moisture).
• Faulty brake hardware (shims, clips, or calipers).
• Warped or damaged brake rotors.

Tools Required

• Socket set and ratchet
• Torque wrench
• Brake caliper tool (if necessary)
• Caliper gauge or micrometer
• Dial indicator (for rotor inspection)
• Brake cleaner
• Safety goggles and gloves
• Jack and jack stands
• Lug wrench

Repair Instructions

Step 1: Safety Precautions

• Park the vehicle on a flat surface and engage the parking brake.
• Wear safety goggles and gloves during the repair.

Step 2: Raise the Vehicle

1. Loosen the lug nuts on the front wheels slightly while the vehicle is on the ground.
2. Use a jack to lift the front of the vehicle and secure it with jack stands.
3. Remove the front wheels using the lug wrench.

Step 3: Inspect Brake Pads and Rotors

1. Remove the brake caliper bolts using the socket set and ratchet.
2. Carefully slide the caliper off the brake rotor (support it to avoid damaging the brake line).
3. Inspect the brake pads for wear. Replace if they are worn below 3mm.
4. Check the rotors for any visible damage or wear. Measure thickness and check for warping using the dial indicator.

Step 4: Replace Worn Parts

1. If brake pads are worn, remove them from the caliper bracket.
2. Install new brake pads, ensuring they are oriented correctly.
3. If rotors are damaged or worn, remove the old rotor by unbolting it from the hub.
4. Install new rotors, ensuring they are clean and free of debris.

Step 5: Reassemble Brake Components

1. Reinstall the brake caliper over the new pads and rotor.
2. Tighten the caliper bolts to the manufacturer’s specifications using a torque wrench.
3. Reinstall the wheels and hand-tighten the lug nuts.

Step 6: Lower the Vehicle

1. Carefully lower the vehicle back to the ground.
2. Use the torque wrench to tighten the lug nuts to the specified torque setting (usually around 100-120 ft-lbs for most vehicles).

Step 7: Test the Brake System

1. Before driving, pump the brake pedal a few times to seat the brake pads against the rotors.
2. Test drive the vehicle at low speeds to ensure the noise has been resolved and brakes are functioning properly.

Conclusion

If the grinding noise persists after following these steps, further investigation may be necessary. Possible issues could involve the brake calipers, brake lines, or even the master cylinder. If unsure, consult a professional technician for a comprehensive diagnosis.