my Acura MDX YF3 (2022-Present) has a grinding noise when braking

Symptoms

• Grinding noise when applying brakes
• Possible vibration felt through the brake pedal
• Reduced braking effectiveness
• Potential warning light on the dashboard (if brake components are severely worn)

Diagnostic Steps

1. Visual Inspection

   • Safely lift the vehicle using a jack and secure it with jack stands.
   • Remove the wheel to access the brake assembly.
   • Inspect brake pads for wear; they should have at least 3mm of material.
   • Check the rotors for scoring, warping, or cracks.

2. Listen for Sounds

   • With the wheel off, have someone apply the brakes while you listen closely to identify the source of the grinding noise.

3. Check for Foreign Objects

   • Inspect the brake caliper and rotor for any debris or foreign objects that may be causing the noise.

4. Scan for Error Codes

   • Use an OBD-II scanner to check for any brake-related error codes that may indicate hydraulic system issues.

Repair Instructions

1. Gather Required Tools and Parts

   • Tools: Jack and jack stands, lug wrench, socket set, torque wrench, brake cleaner, and possibly a brake pad replacement kit.
   • Parts: New brake pads (if worn), rotors (if damaged), brake hardware kit (if necessary).

2. Remove the Wheel

   • Loosen the lug nuts slightly before lifting the vehicle.
   • Safely lift the vehicle and remove the lug nuts completely. Take off the wheel.

3. Remove the Brake Caliper

   • Remove the caliper bolts using a socket wrench.
   • Carefully slide the caliper off the rotor. Support it with a bungee cord or wire to avoid stress on the brake line.

4. Inspect and Replace Brake Pads

   • If the pads are worn down, remove them from the caliper bracket.
   • Clean the caliper bracket and apply brake grease to the contact points.
   • Install the new brake pads in the bracket.

5. Inspect and Replace Rotors (if necessary)

   • If the rotor is damaged, remove it from the hub by removing the retaining screws or caliper bracket if necessary.
   • Install the new rotor and ensure it is properly seated.

6. Reassemble the Brake Components

   • Reattach the brake caliper over the new pads and rotor. Tighten the caliper bolts to the manufacturer's specifications using a torque wrench.
   • Reinstall the wheel and hand-tighten the lug nuts.

7. Lower the Vehicle

   • Carefully lower the vehicle and then fully tighten the lug nuts to the specified torque.

Estimated Time for Repair

• Approximately 1 to 2 hours, depending on the condition of the brake components and whether rotors need replacement.

Safety Warnings

• Always work on a level surface and use jack stands to prevent vehicle collapse.
• Wear safety glasses and gloves to protect against debris and sharp edges.
• Ensure the brake system is properly bled if any brake fluid has been introduced into the system during repairs.