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Persistent Brake Squeal and Pulsation on 2022 TLX Base Model

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Mike T. · rep 0 · May 26, 3:34 AM · 1 replies · solved · Question

Vehicle: 2022 Acura TLX Base

Hi everyone,

I bought a new 2022 Acura TLX Base model about six months ago, and I'm already experiencing annoying brake issues. I've only got about 8,000 miles on it, but the brakes squeal persistently, especially at low speeds or when coming to a stop. On top of that, I'm feeling a noticeable pulsation through the pedal and steering wheel when braking from higher speeds.

This seems way too early for brake problems on a new car. Is this something common with the TLX, or did I get a bad set of components? What should I be looking for or asking the dealership to check?

Thanks for your help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:34 AM

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ClearTheCode admin answer:

Persistent brake squeal and pulsation on a relatively new 2022 Acura TLX with low mileage is certainly frustrating and not typical for a new vehicle. While brakes are wear items, these symptoms at 8,000 miles suggest an underlying issue.

  1. Brake Squeal Causes:

    • Pad Material: Some factory brake pads can be prone to squealing, especially in certain temperature or humidity conditions. Harder, performance-oriented pads can also be noisy.
    • Improper Bedding-In: If the brakes weren't properly 'bedded-in' (a process of gradual heating and cooling) when new, it can lead to uneven pad deposits on the rotors, causing noise.
    • Lack of Lubrication: The backing plates of brake pads need specific high-temperature grease to prevent vibrations between the pad and caliper, which can cause squealing.
    • Worn or Damaged Hardware: Although unlikely on a new car, worn shims or clips can contribute to noise.

  2. Brake Pulsation Causes:

    • Rotor Runout/Warping: The most common cause of pulsation is uneven rotor thickness or 'runout.' This can occur from overheating (e.g., hard braking, dragging calipers) or improper wheel lug nut torque, which can distort the rotor over time. Even a new rotor can have manufacturing defects or be damaged during installation.
    • Caliper Issues: A sticking caliper piston or slide pins can cause uneven pad wear and lead to rotor issues and pulsation.
    • Wheel Bearing/Suspension: Less likely for pulsation only when braking, but a failing wheel bearing or suspension component can sometimes mimic brake pulsation.

When to see a shop:

  • Immediately. Both squealing and pulsation are indicators of a problem that needs professional attention. Since your car is still very new, these issues should be covered under warranty if they are due to a manufacturing defect.
  • Request the dealership to perform a thorough inspection, specifically checking:
    • Rotor runout: They should measure the lateral runout of the brake rotors. This is critical for pulsation.
    • Pad condition and lubrication: Ensure pads are wearing evenly and are properly lubricated.
    • Caliper function: Verify that calipers are moving freely and not sticking.
    • Wheel hub runout: To rule out issues with the hub itself contributing to rotor runout.
  • Do not delay, as prolonged driving with these issues can worsen the problem and potentially lead to premature wear of other components.
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