Leaking brake fluid?

Tiny
THESPARN
  • MEMBER
  • 2016 KIA SOUL
  • 2.1L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 88,800 MILES
My brake fluid reservoir was empty, my ABS light came on. I filled it drove 7 miles home and it's empty. I don't see any visible leaks. What could it be?
Wednesday, September 3rd, 2025 AT 4:07 PM

2 Replies

Tiny
MECHTRIX
  • MECHANIC
  • 382 POSTS
Look on the inside of the wheel one of them might be wet. It can also leak from a cracked brake line onto the road. Before you move the car the next day look under the car to see if any leaked onto the road. It can also leak into the brake booster from behind the master cylinder where you cant see it.
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Wednesday, September 3rd, 2025 AT 7:24 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
Yep I agree with MECHTRIX, I have seen the back of the brake master leak and fill up the brake booster. If you cant find any leaks unbolt the brake master from the booster for inspection.
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Saturday, September 6th, 2025 AT 9:22 AM

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