2019 Audi Q5 Squeaky Brakes - Driving Me Nuts!

ClearTheCode admin answer:

Persistent brake squeal, especially after a recent pad and rotor replacement, can be frustrating. Here's a breakdown of common causes and what to check:

1. Improper Pad Installation/Material: Aftermarket pads can sometimes be prone to squealing if they are not high-quality or were not installed correctly. Ensure anti-squeal shims were used and brake grease applied to the caliper contact points.
2. Glazed Rotors or Pads: If the brakes were overheated, the surface of the pads or rotors can become 'glazed,' leading to a hard, shiny surface that squeals. This often happens with aggressive braking or if the pads weren't properly bedded in.
3. Caliper Issues: A sticking caliper piston or slide pins can cause uneven pad wear and constant contact, leading to noise. This can also cause premature wear on one side.
4. Worn Components: While you mentioned recent replacement, sometimes other components like worn caliper hardware or even a loose dust shield can contribute to noise.
5. Brake Dust: Excessive brake dust buildup can also cause squealing. A thorough cleaning of the brake components can sometimes resolve this.

When to See a Shop: If the squealing is accompanied by any of the following, it's crucial to have it inspected by a professional immediately:

• Reduced braking performance or a 'soft' pedal.
• Vibration through the pedal or steering wheel during braking.
• Pulling to one side when braking.
• Visible scoring or deep grooves on the rotors.

A qualified technician can inspect your brake system, check for proper installation, assess pad and rotor condition, and diagnose any caliper or hardware issues. They can also perform a proper brake service, including cleaning and lubrication, to eliminate the noise.