The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

When to Flush Brake Fluid on my G80 3.3T? Brakes feel a bit spongy.

0

Chris P. · rep 0 · May 25, 4:38 AM · 1 replies · solved · Question

Vehicle: 2018 Genesis G80 3.3T

Hey everyone,

I've got a 2018 Genesis G80 3.3T with about 65,000 miles on it. Lately, I've noticed the brake pedal feels a little softer or spongier than it used to, especially after a lot of stop-and-go traffic. The car still stops, but it doesn't feel as firm or responsive.

I've had the brake pads and rotors checked recently, and they were fine. I'm wondering if it's time for a brake fluid flush. I don't recall ever having it done since I bought the car used a few years ago. What's the recommended interval for Genesis vehicles, especially for my model year and trim? Is this something a competent DIYer can tackle, or should I definitely take it to a shop?

Any advice or experiences would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:38 AM

0

ClearTheCode admin answer:

It's a good observation to consider brake fluid, especially with a spongy pedal feel. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to a less firm pedal.

  1. Recommended Interval: For most Genesis models, including your 2018 G80, the manufacturer generally recommends a brake fluid flush every 2 years or 30,000 miles, whichever comes first. Given your mileage and the age of the fluid (if it hasn't been done), you're definitely past due.
  2. Causes of Spongy Pedal:
    • Contaminated/Old Fluid: Moisture in the fluid can turn to vapor under braking heat, creating compressible air pockets.
    • Air in the System: This can happen after brake component replacement or if the fluid level was allowed to drop too low.
    • Worn Brake Lines: Less common, but deteriorating rubber lines can expand under pressure.
    • Master Cylinder Issues: If the master cylinder is failing, it might not hold pressure effectively.
  3. DIY vs. Shop: A brake fluid flush can be a DIY task, but it requires specific tools (like a pressure bleeder or vacuum pump) and often a second person to pump the brakes. It's crucial to use the correct DOT-rated fluid (check your owner's manual, typically DOT 3 or DOT 4) and prevent air from entering the system. If you're not experienced or comfortable with brake system work, it's highly recommended to have a professional shop perform this service. Brakes are a critical safety system.
  4. When to See a Shop Immediately:
    • If the pedal goes to the floor.
    • If you notice any fluid leaks around the wheels or under the car.
    • If the brake warning light is illuminated on your dashboard.

Addressing this promptly will restore your braking performance and safety.

Menu

Help & account