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Squeaky Brakes on my 2018 XC90 T6 - Driving me crazy!

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Rachel A. · rep 0 · May 22, 5:13 AM · 1 replies · solved · Question

Vehicle: 2018 Volvo XC90 T6 Momentum

Hey everyone,

I've got a 2018 Volvo XC90 T6 with about 65,000 miles on it, and lately, the brakes have started squeaking like crazy. It's most noticeable at low speeds, like when I'm pulling into a parking spot or coming to a stop sign. It's not a constant squeal, but definitely a loud, intermittent squeak.

I had the pads and rotors replaced about 15,000 miles ago with aftermarket parts. Could it be the pads themselves, or something else? The braking performance seems fine otherwise, no pulsing or grinding, just that annoying noise. Any ideas on what might be causing this and what I can do to fix it?

Thanks for any help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:13 AM

0

ClearTheCode admin answer:

Squeaky brakes are a common complaint and can have several causes, especially after a pad and rotor replacement. Here's a breakdown:

  1. Causes of Squeaky Brakes:

    • Improper Bedding-In: New brake pads need to be properly 'bedded-in' to the rotors. This process transfers a thin layer of pad material to the rotor surface, which is crucial for optimal performance and quiet operation. If not done correctly, it can lead to squealing.
    • Pad Material: Some aftermarket brake pads, particularly performance-oriented or metallic compounds, are inherently noisier than OEM (Original Equipment Manufacturer) pads. They might offer better stopping power but at the cost of increased noise.
    • Lack of Anti-Squeal Shims/Grease: Brake pads often come with anti-squeal shims, or technicians apply a special high-temperature grease to the back of the pads and caliper contact points. This dampens vibrations that cause squealing. If these were omitted or applied incorrectly, noise can occur.
    • Dust and Debris: Accumulation of brake dust, dirt, or small stones between the pad and rotor can cause noise. A quick brake cleaning can sometimes resolve this.
    • Worn Rotors/Pads (less likely given recent replacement): While you mentioned recent replacement, uneven wear or glazing on the rotors or pads can also cause squealing.

  2. What You Can Do:

    • Brake Cleaning: You can try cleaning the brake components with a dedicated brake cleaner spray. This might remove any accumulated dust or debris.
    • Re-bedding the Brakes: Look up the proper brake bedding procedure for your specific pads (often involves a series of hard stops from moderate speeds without coming to a complete stop). This might help if the initial bedding was insufficient.

  3. When to See a Shop:

    • If the squeaking persists after cleaning or attempting to re-bed the brakes.
    • If you notice any change in braking performance, such as a soft pedal, pulling, or grinding, which could indicate a more serious issue.
    • A professional technician can inspect the brake components, ensure proper installation, check for glazing on pads/rotors, and reapply anti-squeal compounds if necessary. They can also check for caliper issues or other underlying problems.
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