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2018 Santa Fe Brakes Squealing and Grinding

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Melissa G. · rep 0 · May 22, 2:59 AM · 1 replies · solved · Question

Vehicle: 2018 Hyundai Santa Fe Limited

Hey everyone, I've got a 2018 Hyundai Santa Fe Limited with about 60,000 miles on it. Lately, I've noticed a really annoying squealing sound coming from the brakes, especially when I first start driving in the morning or after it's rained. It sometimes turns into a grinding noise when I brake harder.

I'm wondering if this is just normal wear and tear or if it's something more serious. The car still stops fine, but the noise is getting louder and more frequent.

Has anyone else experienced this with their Santa Fe or other Hyundai models? What was the fix? Should I be worried about driving it like this?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 2:59 AM

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ClearTheCode admin answer:

  1. Identify the Source: Squealing often indicates worn brake pads, where the metal wear indicator is contacting the rotor. Grinding, however, suggests the pads are severely worn down, and the metal backing plate is now contacting the rotor, which can cause significant damage.
  2. Common Causes:
    • Worn Brake Pads: The most frequent cause. Pads have a minimum thickness, and once exceeded, they need replacement.
    • Warped Rotors: Uneven rotor surfaces can cause vibrations and noise, especially under braking.
    • Rust/Corrosion: Surface rust on rotors, particularly after rain or sitting for a while, can cause initial squealing that usually dissipates after a few stops. Persistent noise indicates a deeper issue.
    • Improper Installation: If pads or rotors were recently replaced, improper bedding or installation can lead to noise.
    • Contamination: Oil, grease, or brake fluid on the pads can cause squealing.
  3. When to See a Shop: You should have your Santa Fe inspected by a qualified mechanic immediately. Grinding noises are a serious safety concern as they indicate a severe lack of braking material, which compromises your stopping power and can lead to costly rotor damage. Driving with metal-on-metal braking is dangerous and can lead to brake failure. A professional can accurately diagnose whether it's pads, rotors, calipers, or another component and recommend the necessary repairs.
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