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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and securely raise it using jack stands.
• Disconnect the battery to prevent electrical shorts.

2. Remove Wheel

• Use a lug wrench to loosen and remove the lug nuts on the affected wheel.
• Remove the wheel to access the brake components.

3. Inspect and Replace Brake Pads

• Inspect Brake Pads:
  • Check for wear indicators; if pads are worn down to 3mm or less, they need replacement.
  • Assess for uneven wear that may indicate caliper issues.
• Replace Brake Pads:
  • Remove the caliper bolts using a socket set.
  • Carefully lift the caliper off the rotor without disconnecting the brake line.
  • Remove old brake pads from the caliper bracket.
  • Install new brake pads, ensuring they are properly seated and aligned.

4. Inspect and Replace Brake Rotors (if necessary)

• Inspect Rotors:
  • Check for grooves, cracks, or significant wear on the rotor surface.
• Replace Rotors:
  • Remove the caliper bracket if necessary to access the rotor.
  • Remove the old rotor from the hub.
  • Clean the hub surface with a wire brush to ensure proper fitting of the new rotor.
  • Install the new rotor, ensuring it is flush against the hub.

5. Reassemble Brake Components

• Reattach the caliper over the new brake pads and secure it with the caliper bolts, tightening to the manufacturer's specified torque (usually around 90-100 ft-lbs).
• Reinstall the wheel and hand-tighten the lug nuts.

6. Final Checks

• Reconnect the battery.
• Pump the brake pedal several times to ensure proper seating of the pads.
• Lower the vehicle and perform a test drive to verify the repair.