why does my Toyota Highlander XU70 (2020-Present) make a grinding noise when braking

Solution

1. Preparation

• Gather tools and safety equipment (gloves, safety goggles).
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative terminal of the battery to prevent electrical issues.

2. Remove Wheel

• Use a lug wrench to loosen the lug nuts slightly while the vehicle is on the ground.
• Raise the vehicle with a jack and secure it with jack stands.
• Remove the wheel completely to access the brake assembly.

3. Inspect Brake Components

• Remove the caliper bolts using a socket set and slide the caliper off the rotor.
• Inspect the brake pads for wear; replace if the thickness is less than 3mm.
• Check the brake rotor for any grooves or warping; replace if damaged.

4. Replace Brake Pads and/or Rotors (if necessary)

• If replacing brake pads, remove the old pads from the caliper bracket.
• Apply brake grease to the back of the new pads to reduce noise.
• Reinstall the new pads into the caliper bracket.
• If the rotor is being replaced, remove the rotor by unscrewing any retaining screws.
• Install the new rotor and torque to manufacturer specifications (typically 80-100 ft-lbs).

5. Reassemble Brake Components

• Reposition the caliper over the new pads and rotor, ensuring proper alignment.
• Secure the caliper with bolts and torque to manufacturer specifications (usually around 25-30 ft-lbs).
• Reinstall the wheel and tighten lug nuts in a star pattern to ensure even seating.

6. Final Checks

• Reconnect the negative battery terminal.
• Lower the vehicle and ensure the brake pedal feels firm when pressed.
• Pump the brake pedal a few times to seat the new components before driving.