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Persistent Brake Squeal and Vibration on my 2018 Acura TLX A-Spec

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Rachel A. · rep 0 · May 22, 4:55 AM · 1 replies · solved · Question

Vehicle: 2018 Acura TLX A-Spec

Hey everyone,

I've been experiencing a really annoying issue with my 2018 Acura TLX A-Spec. For the past few weeks, I've had a persistent squeal from the brakes, especially at lower speeds or when coming to a gentle stop. It's not just a quick squeak; it's a prolonged, high-pitched noise that's quite embarrassing.

On top of that, I've started to notice a slight vibration through the pedal and steering wheel when I apply the brakes, particularly from highway speeds. I had the pads and rotors replaced about 15,000 miles ago with aftermarket parts, but this issue feels different from typical worn pads. Could it be warped rotors again, or something else entirely? Any advice would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:55 AM

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ClearTheCode admin answer:

It sounds like you're dealing with a common, yet frustrating, brake issue. The combination of persistent squeal and vibration points to a few potential culprits:

  1. Warped Rotors: Even with relatively new rotors, if they weren't properly bedded in or if they experienced severe heat cycles (e.g., hard braking followed by hitting a puddle), they can warp. This is a primary cause of vibration during braking.
  2. Uneven Pad Wear or Contamination: If brake pads are wearing unevenly, or if they've become contaminated with grease, oil, or brake fluid, they can cause squealing. Sometimes, cheap aftermarket pads can also be inherently noisy.
  3. Sticking Caliper: A caliper that isn't fully releasing can cause constant friction, leading to heat buildup, rotor warping, and squealing. It can also cause the car to pull to one side.
  4. Loose Hardware: Check for loose caliper bolts, pad clips, or other brake hardware. This can contribute to noise and vibration.

When to see a shop:

  • Immediately if the braking performance feels significantly reduced, or if the vibration becomes severe.
  • If you've inspected the visible components and can't identify the cause.
  • If you suspect a sticking caliper, as this can be a safety hazard and lead to premature wear.

Recommended Steps:

  1. Inspect Rotors: Visually check your rotors for any scoring, grooves, or blue spots (indicating excessive heat). You can also feel for unevenness with your finger. A shop can measure runout to confirm warping.
  2. Inspect Pads: Check the thickness of your brake pads. Look for uneven wear across the pad surface or between the inner and outer pads. Ensure they are clean and free of contaminants.
  3. Check Calipers: With the wheel off, try to move the caliper slightly. It should have minimal play. Also, check the caliper guide pins to ensure they move freely and are properly lubricated.
  4. Clean and Re-lube: Sometimes, simply removing the pads, cleaning the caliper hardware, and applying high-temperature brake lubricant to the appropriate contact points can resolve squealing issues.

Given the vibration, it's highly probable that your rotors need to be resurfaced or replaced. A professional inspection will accurately diagnose the root cause and ensure your braking system is safe and effective.

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