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Squealing brakes on my 2022 Model 3 after regen braking – normal or maintenance needed?

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Tom H. · rep 0 · May 22, 5:26 AM · 1 replies · solved · Question

Vehicle: 2022 Tesla Model 3 Standard Range Plus

Hi everyone,

I've got a 2022 Tesla Model 3 Standard Range Plus, and I've noticed that my brakes occasionally squeal, especially after I haven't used them much due to regenerative braking. It's most noticeable when I'm coming to a complete stop at low speeds. It's not a constant thing, but it's frequent enough to be annoying.

I know Teslas rely heavily on regen, so the friction brakes don't get as much use. Could this be causing the squealing? Is there any DIY maintenance I can do, like cleaning the brakes, or should I be worried about worn pads or rotors already on a relatively new car?

Any advice from other Model 3 owners would be great!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:26 AM

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ClearTheCode admin answer:

Squealing brakes on a Tesla Model 3, particularly after periods of heavy regenerative braking, are a very common phenomenon and often not a cause for immediate concern regarding wear. Your observation is spot on: the extensive use of regenerative braking means the friction brakes are used less frequently, which can lead to specific issues.

Here's why it happens and what you can do:

  1. Causes of Squealing:

    • Rust/Corrosion: Since friction brakes are used less, a thin layer of rust can build up on the rotors, especially in humid climates or after rain. This rust is quickly scrubbed off with a few firm brake applications, but it can cause temporary squealing.
    • Glazing: Infrequent use can cause the brake pads to 'glaze' over, creating a hard, shiny surface that squeals against the rotor.
    • Dust/Debris: Accumulation of brake dust or road debris between the pad and rotor can also cause noise.

  2. DIY Maintenance (Brake Cleaning):

    • Purposeful Braking: The easiest 'maintenance' is to occasionally perform a few firm, controlled stops from moderate speed (e.g., 40-50 mph down to 10 mph) in a safe area. This helps to clean off rust and glaze from the pads and rotors. Do this when safe and traffic-free.
    • Visual Inspection: Periodically inspect your brake pads and rotors. Look for uneven wear, deep grooves on the rotors, or pads that look excessively thin. You can usually see the outer pad through the wheel spokes.
    • Brake Cleaning (Advanced DIY): If comfortable, you can remove the wheels and use a brake cleaner spray (non-chlorinated) to clean the calipers, pads, and rotors. This helps remove dust and debris. Always follow safety precautions and consult your owner's manual for specific procedures.

  3. Brake Fluid Check: While not directly related to squealing, brake fluid should be checked and replaced according to Tesla's service schedule (typically every 2 years or 25,000 miles). This is generally a service center task.

When to See a Shop:

  • Persistent, Loud Squeal: If the squealing is constant, very loud, or accompanied by grinding noises, a pulsating brake pedal, or a noticeable decrease in braking performance.
  • Warning Lights: If you get any brake system warning lights on your dashboard.
  • Visible Wear: If your visual inspection reveals deeply grooved rotors, severely worn pads (less than 3-4mm thickness), or any signs of fluid leaks around the calipers.
  • Annual Service: Tesla recommends a brake caliper service (cleaning and lubrication) every 12,500 miles or annually in regions that use road salt. This helps prevent seizing and ensures optimal brake function. If you're not comfortable with DIY cleaning, this service is highly recommended.
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