The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

Spongy Brake Pedal on 2019 Q60 - Time for a Brake Fluid Flush?

0

Nicole W. · rep 0 · May 22, 5:08 AM · 1 replies · solved · Question

Vehicle: 2019 Infiniti Q60 Red Sport 400

Hello Infiniti owners,

I've got a 2019 Infiniti Q60 Red Sport 400 with about 40,000 miles. Lately, I've noticed that my brake pedal feels a bit spongy, and the braking performance doesn't feel as sharp as it used to. There are no warning lights on the dash, and the pads and rotors look okay.

Could this be a sign that I need a brake fluid flush? What's the recommended interval for brake fluid replacement on a 2019 Infiniti Q60? Is this a DIY job, or should I take it to a professional?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:08 AM

0

ClearTheCode admin answer:

A spongy brake pedal and reduced braking performance, without any obvious issues with pads or rotors, are strong indicators that your brake fluid is due for a flush. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which compromises its effectiveness.

  1. Why Brake Fluid Degrades: As brake fluid absorbs water, its boiling point decreases. When brakes are used heavily, the fluid can heat up and boil, creating vapor bubbles in the lines. Unlike incompressible fluid, vapor is compressible, leading to that spongy pedal feel and reduced braking power.
  2. Recommended Interval: For your 2019 Infiniti Q60, it's generally recommended to flush and replace the brake fluid every 2-3 years or every 30,000-45,000 miles, whichever comes first. At 40,000 miles and likely 4-5 years old, your fluid is definitely due.
  3. Fluid Type: Infiniti vehicles typically use DOT 3 or DOT 4 brake fluid. Always check your owner's manual or the cap on your brake fluid reservoir to confirm the correct type. Using the wrong fluid can damage your braking system.
  4. DIY vs. Professional: A brake fluid flush can be a DIY task, but it requires specific tools (like a brake bleeder kit or vacuum pump) and often a second person to pump the brakes. It's crucial to prevent air from entering the system. Given the critical safety aspect of brakes, if you're not experienced or comfortable, it's highly recommended to have a professional shop perform this service.
  5. When to See a Shop: If the spongy pedal persists after a proper flush, or if you notice any fluid leaks, a warning light, or a sudden loss of braking power, immediately take your vehicle to a qualified technician. This could indicate a more serious issue with the master cylinder, calipers, or ABS system.
Menu

Help & account