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2017 Jetta Brakes Squealing Loudly After Pad Replacement

0

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

Vehicle: 2017 Volkswagen Jetta SE

Hey everyone,

I recently had the front brake pads and rotors replaced on my 2017 Volkswagen Jetta SE about 500 miles ago. Ever since then, I've been getting a really loud, high-pitched squeal from the front brakes, especially when coming to a stop at lower speeds. It's quite embarrassing.

The shop said they used good quality aftermarket pads, not the cheapest ones. I've tried to 'bed in' the pads as instructed, but the noise persists. It seems worse when the car is cold, but doesn't completely go away once warmed up.

Is this normal for new pads, or could something be wrong? Any ideas on what I should check or suggest to the shop if I take it back?

✓ Accepted solution

ClearTheCode Admin

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

0

ClearTheCode admin answer:

Persistent squealing after brake pad replacement can be frustrating but is often resolvable. Here's a breakdown of common causes and steps:

  1. Improper Installation/Lubrication:

    • Cause: Brake pad shims or caliper contact points might not have been properly lubricated with high-temperature brake grease. This allows metal-on-metal vibration, leading to noise.
    • Action: A qualified technician should remove the pads, clean the caliper brackets, and apply appropriate grease to all contact points and the back of the shims.

  2. Pad Material Quality/Type:

    • Cause: Some aftermarket pads, particularly metallic or semi-metallic compounds, can be inherently noisier than ceramic pads, especially in certain conditions. Also, very cheap pads may not have proper anti-squeal shims.
    • Action: If lubrication doesn't help, consider switching to a different brand or type of pad, perhaps a ceramic compound known for quiet operation.

  3. Rotor Condition:

    • Cause: Even with new pads, if the rotors weren't properly machined or replaced, or if they've developed a glaze or runout quickly, they can contribute to noise.
    • Action: Inspect rotors for any uneven wear, scoring, or glazing. Sometimes a light resurfacing or replacement is necessary.

  4. Caliper Issues:

    • Cause: A sticking caliper piston or seized guide pins can cause uneven pad pressure, leading to noise and premature wear.
    • Action: Ensure calipers are moving freely and guide pins are properly lubricated.

When to See a Shop: If the squealing is severe, accompanied by a grinding noise, or if you notice any changes in braking performance (e.g., pulling, reduced stopping power), return to the shop immediately. Even if it's just noise, a professional inspection is best to ensure safety and proper function. They can re-evaluate the installation and components.

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