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Annoying Brake Squeal on my 2018 Jetta S

0

Mike T. · rep 0 · May 25, 3:20 AM · 1 replies · solved · Question

Vehicle: 2018 Volkswagen Jetta S

Hey everyone, I'm getting a really persistent and loud squeal from my brakes, mostly at low speeds or when I'm just lightly pressing the pedal. It's a 2018 Volkswagen Jetta S with about 65,000 miles on it.

I had the front pads and rotors replaced about 10,000 miles ago, and the rear ones were done roughly 20,000 miles ago. I've tried cleaning them with brake cleaner, but the noise keeps coming back.

Could it be something more serious than just dust? It's pretty embarrassing in traffic.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:20 AM

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ClearTheCode admin answer:

Persistent brake squeal can be frustrating, especially after recent service. While dust is a common culprit, several other factors can contribute to this issue:

  1. Pad Material & Glazing: Some aftermarket brake pads can be prone to squealing, especially if they are a harder compound. Also, if the pads or rotors were not properly bedded-in after installation, they can develop a glazed surface which causes noise.
  2. Rotor Condition: Even relatively new rotors can warp or develop uneven wear, which can lead to squealing or pulsation. Inspect the rotors for any visible grooves or discoloration.
  3. Caliper Issues: Sticking caliper pistons or pins can prevent the pads from retracting fully, causing constant light contact with the rotor and generating noise. This can also lead to uneven pad wear.
  4. Anti-Squeal Shims/Grease: The shims behind the brake pads are crucial for dampening vibrations that cause squeal. If they were omitted, damaged, or not properly lubricated with high-temperature brake grease during installation, noise can occur.
  5. Foreign Objects: Occasionally, a small stone or debris can get lodged between the pad and rotor, causing a persistent squeal.

When to see a shop: If cleaning doesn't help, or if you notice any changes in braking performance (e.g., pulsation, reduced stopping power, pulling to one side), it's best to have a qualified mechanic inspect your brake system. They can properly diagnose the source of the squeal, check for warped rotors, sticking calipers, and ensure all components are correctly installed and functioning safely. Ignoring persistent brake noise can sometimes lead to more significant and costly repairs down the line, or even compromise safety.

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