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Spongy Brakes on 2023 Integra - Time for Brake Fluid Flush?

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Jason D. · rep 0 · May 22, 4:59 AM · 1 replies · solved · Question

Vehicle: 2023 Acura Integra A-Spec

I've got a 2023 Acura Integra A-Spec with about 25,000 miles on it. Lately, I've noticed the brake pedal feels a bit spongy, not as firm as it used to be. The car still stops, but I have to press the pedal further, and it just doesn't inspire the same confidence.

I haven't had any brake work done yet, and I'm wondering if it's time for a brake fluid flush. I know brake fluid absorbs moisture, but at 25k miles, is it really necessary already? What's the recommended interval for the Integra?

Also, are there any other common brake maintenance items I should be looking at around this mileage? I want to keep my brakes in top shape.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:59 AM

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ClearTheCode admin answer:

It's excellent that you're proactive about your 2023 Acura Integra's brake system, especially noticing a change in pedal feel. A spongy brake pedal is a clear indicator that something needs attention, and a brake fluid flush is a very good place to start.

Here's what you need to know:

  1. Brake Fluid Flush Interval: Acura generally recommends a brake fluid flush every 3 years or 45,000 miles, whichever comes first. While your Integra is only at 25,000 miles, it's already approaching the 3-year mark. More importantly, brake fluid is hygroscopic, meaning it absorbs moisture from the air over time. This moisture lowers the fluid's boiling point and can lead to internal corrosion in the brake lines and components, causing a spongy pedal.
  2. Why it Causes Sponginess: When brake fluid absorbs water, it can boil at lower temperatures, especially during heavy braking. This creates compressible vapor bubbles in the brake lines, leading to that 'spongy' feeling as the pedal compresses air/vapor instead of directly transmitting hydraulic pressure.
  3. DIY vs. Professional: A brake fluid flush can be a DIY job, but it requires specific tools (bleeder wrench, clear tubing, catch bottle) and often a second person to pump the brakes. It's crucial to prevent air from entering the system and to use the correct DOT 3 or DOT 4 fluid (check your owner's manual for the exact specification). If you're not comfortable, a professional shop can perform this quickly and correctly.

Other Common Brake Maintenance at 25,000 Miles:

  • Brake Pad and Rotor Inspection: Have your brake pads inspected for wear. At 25,000 miles, they might be halfway through their life or more, depending on your driving style. Also, check the rotors for excessive wear, scoring, or warping. Minor surface rust is normal, but deep grooves are not.
  • Caliper Slide Pin Lubrication: Ensure the brake caliper slide pins are clean and well-lubricated. This allows the calipers to move freely, ensuring even pad wear and optimal braking performance. Sticking pins can lead to uneven wear and reduced braking efficiency.

When to See a Shop:

  • If a brake fluid flush doesn't resolve the spongy pedal, as this could indicate air in the system from a leak, a failing master cylinder, or other hydraulic issues.
  • If you notice any grinding, squealing (beyond normal pad wear indicators), or pulling to one side when braking.
  • If you're uncomfortable performing the brake fluid flush or inspecting brake components yourself.
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