There is a loud hissing sound coming from the driver's side

JESSADEEC

MEMBER
2011 KIA SORENTO
AUTOMATIC
112,000 MILES

When I brake at high speeds or when I first drive the car, there are no weird braking sounds. However, when I have driven the car for about 25-30 minutes and hit the brake at slow speed (like coming up to a light or stop sign or speed hump), there is a loud hissing sound coming from the driver's side. I don't hear anything outside the car and it doesn't do it all the time. I need to replace the booster.

1 Reply

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Here is the information you requested. Be sure to just move the brake master cylinder slightly out of the way so that you don't have to open a line and then have to bleed the brake system. I've attached picture steps below on how to change the power brake booster on your car. Hope this helps and thanks for using 2CarPros.

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