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Persistent Brake Squeal and Pulsation in my 2023 SQ5 Premium

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Mike T. · rep 0 · May 26, 3:49 AM · 1 replies · solved · Question

Vehicle: 2023 Audi SQ5 Premium

Hi everyone,

I'm experiencing a really annoying issue with the brakes on my 2023 Audi SQ5 Premium. I've only had the car for about a year, and I'm already getting a persistent, high-pitched squeal every time I apply the brakes, even lightly. It's not just when they're cold; it happens almost constantly, which is embarrassing and frustrating for a new luxury SUV.

Additionally, I've started to feel a slight pulsation through the brake pedal when braking at higher speeds. It's not severe, but it definitely wasn't there when the car was new. I'm wondering if this is normal for SQ5s or if I have a problem with my rotors or pads. The car only has about 15,000 miles on it.

Has anyone else with a newer SQ5 encountered similar brake noise and pulsation issues? What was the cause, and how was it resolved? Any advice before I take it back to the dealer would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:49 AM

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ClearTheCode admin answer:

Persistent brake squeal and pulsation in a relatively new 2023 Audi SQ5 Premium are not typical and indicate a potential issue with the braking system. These symptoms should be investigated promptly for safety and comfort.

1. Initial Diagnostics & Checks:

  1. Visual Inspection: Carefully inspect your brake pads and rotors. Look for uneven wear on the pads, scoring or grooving on the rotors, or any signs of rust buildup.
  2. Brake Dust: Excessive brake dust can sometimes contribute to squealing, but usually not pulsation.
  3. Brake Pad Material: Note if the squealing started after any brake service or if you know what type of brake pads are installed (e.g., performance pads can sometimes be noisier).

2. Common Causes:

  • Brake Rotor Warping/Runout: The pulsation through the pedal is a classic symptom of warped or unevenly worn brake rotors. This can happen due to overheating, improper installation, or simply manufacturing defects. Even slight runout can cause noticeable pulsation.
  • Uneven Brake Pad Wear: If pads are not wearing evenly, or if one caliper is sticking, it can lead to both squealing and pulsation.
  • Contaminated Brake Pads: Oil, grease, or other contaminants on the brake pads can cause squealing. This is less likely to cause pulsation.
  • Insufficient Bedding-In: New brake pads and rotors need to be properly 'bedded-in' to transfer a thin, even layer of pad material to the rotor surface. Improper bedding can lead to noise and uneven braking performance.
  • Sticking Caliper: A brake caliper that isn't fully releasing can cause constant friction, leading to premature wear, heat buildup, squealing, and potentially pulsation.
  • Anti-Squeal Shims/Grease: Missing or improperly installed anti-squeal shims or insufficient brake grease on the caliper contact points can cause noise.

3. When to See a Shop:

Brake issues are a safety concern and should be addressed without delay. While minor squealing can sometimes be normal, persistent squealing and especially pulsation indicate a problem.

  • Schedule an appointment with your Audi dealership or a trusted independent Audi specialist immediately. Do not postpone this, as compromised braking can be dangerous.
  • Explain both the squealing and the pulsation, noting when they occur. The technician will likely inspect the entire braking system, measure rotor runout, check pad thickness and wear patterns, and ensure calipers are functioning correctly. Given the vehicle's age and mileage, it's possible you have a warranty claim for premature wear or a defective component.
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