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Persistent brake squeal after new pads and rotors on my 2020 RAV4 XLE

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Mike T. · rep 0 · May 25, 1:26 AM · 1 replies · solved · Question

Vehicle: 2020 Toyota RAV4 XLE

Hi everyone,

I recently had new brake pads and rotors installed on all four wheels of my 2020 Toyota RAV4 XLE. It's been about two weeks since the service, and I'm still getting a persistent, high-pitched squeal every time I apply the brakes, especially at low speeds. It's quite annoying and honestly, a bit embarrassing.

The shop assured me they used quality parts and followed proper break-in procedures. I've tried several hard stops to 'bed' them in, but the squealing hasn't gone away. It's not a grinding noise, just a very loud squeal.

Is this normal for new brakes, or should I be concerned? What could be causing this, and what should I ask the shop to check when I take it back? Any advice from fellow RAV4 owners or brake experts would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:26 AM

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ClearTheCode admin answer:

Brake squeal after new pad and rotor installation is a common complaint, but it's not always 'normal' or something you have to live with. While some minor noise can occur during the initial break-in period, persistent loud squealing suggests an underlying issue.

Possible Causes for Persistent Squeal:

  1. Improper Installation: This is a frequent cause. If the brake pads were not properly lubricated on the backing plates and caliper contact points with high-temperature brake grease, or if anti-squeal shims were omitted or incorrectly installed, noise can result.
  2. Pad Material Quality/Composition: Some aftermarket pads, particularly metallic or semi-metallic compounds, can be inherently noisier than ceramic pads, especially in certain temperature ranges. However, even quality pads can squeal if not installed correctly.
  3. Rotor Finish: If the rotors weren't properly machined or cleaned of manufacturing oils before installation, or if they developed an uneven surface during the break-in, it can cause vibration and squeal.
  4. Caliper Issues: A sticky caliper piston or slide pins can cause uneven pad wear and constant contact, leading to noise.
  5. Lack of Proper Bedding-in: While you mentioned trying to bed them in, if the process wasn't done correctly or consistently, the pads might not have transferred an even layer of material to the rotors, leading to noise.

When to See a Shop:

Since the squealing is persistent and loud, you should definitely take your RAV4 back to the shop that performed the work. They should re-inspect the entire brake system. Ask them to:

  1. Remove and inspect the pads for proper lubrication and shim placement.
  2. Check the caliper slide pins for proper movement and lubrication.
  3. Inspect the rotors for any uneven wear, glazing, or scoring.
  4. Ensure the pads are seated correctly and are the appropriate type for your vehicle and driving style.

Don't hesitate to have them address this; you shouldn't have to tolerate loud brake noise after a professional service.

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