my Acura MDX YF3 (2022-Present) rear brakes squeak when I stop

Symptoms

• Squeaking noise when applying brakes
• Noise may increase with braking pressure
• Potential vibration or pulsation in the brake pedal (in some cases)
• Possible brake warning light on the dashboard (if wear indicators are present)

Diagnostic Steps

1. Visual Inspection

   • Inspect rear brake components (pads, rotors, calipers) for visible wear or damage.
   • Look for any signs of debris or dust build-up on the brake components.

2. Check Brake Pad Thickness

   • Measure the thickness of the brake pads. They should generally be above 3mm. If they are below this threshold, replacement is needed.

3. Listen for Noise Type

   • Determine if the noise is a high-pitched squeak or a grinding sound. A squeak may indicate dust or moisture, while grinding suggests more severe wear.

4. Inspect Brake Rotors

   • Check rotors for scoring, uneven wear, and rust buildup. Use a micrometer to measure rotor thickness and ensure it meets manufacturer specifications.

5. Check for Moisture and Dust

   • Inspect for moisture or dirt accumulated on the brake pads and rotors. Cleaning may resolve the noise.

Repair Instructions

1. Gather Required Tools

   • Socket set
   • Torque wrench
   • Brake cleaner
   • Bungee cord or rope (to hang caliper)
   • Brake grease
   • Brake pad replacement kit (if necessary)
   • Safety glasses and gloves

2. Prepare the Vehicle

   • Park on a flat surface and engage the parking brake.
   • Loosen the rear wheel lug nuts slightly while the car is on the ground.

3. Lift the Vehicle

   • Use a floor jack to lift the rear of the vehicle, and secure it on jack stands.
   • Remove the rear wheel to access the brake assembly.

4. Remove the Brake Caliper

   • Use the socket set to remove the caliper mounting bolts.
   • Carefully slide the caliper off the rotor. Use a bungee cord to hang the caliper and avoid stress on the brake line.

5. Inspect and Clean Brake Pads and Rotors

   • If pads are worn down (below 3mm), remove them from the caliper bracket.
   • Clean the rotor with brake cleaner to remove dust and debris.
   • Inspect the rotor for any scoring or warping; if damaged, consider replacing it.

6. Replace Brake Pads (if necessary)

   • Install new brake pads according to the manufacturer's instructions.
   • Apply a thin layer of brake grease on the backing of the pads and caliper contact points to prevent squeaking.

7. Reinstall Brake Caliper

   • Slide the caliper back over the new pads and rotor.
   • Tighten caliper mounting bolts to the manufacturer’s specified torque.

8. Reinstall Wheel

   • Place the wheel back on and hand-tighten the lug nuts.
   • Lower the vehicle and torque the lug nuts to the specified value.

9. Test the Brakes

   • Before driving, pump the brake pedal a few times to seat the pads against the rotor.
   • Test drive at low speed to check for squeaking and ensure brakes are functioning properly.

Estimated Time for Repair

• Approximately 1 to 2 hours depending on experience and whether parts need replacement.

Safety Warnings

• Always wear safety glasses and gloves during repairs.
• Ensure the vehicle is securely lifted and supported with jack stands.
• Never work under a vehicle supported only by a jack.