2011 – 2015 Hyundai Sonata / Kia Optima Brake Booster Replacement

2011 – 2015 Hyundai Sonata / Kia Optima Brake Booster Replacement

How to video on replacing the brake booster on a 2011 – 2014 Hyundai Sonata or a 2011 – 2015 Kia Optima. Symptoms of a failed brake booster: 1. More pressure on the brake pedal to slow down / stop. 2. Need more distance to stop. 3. ABS light possibly coming on. 4. Continuous drop in brake fluid reservoir indicating the master cylinder is leaking into the booster corrupting the booster seal. 5. No difference in brake pedal pressure with or without the engine running (since the booster needs vacuum from a running engine to work).
Aside from having a metric 3/8″ socket wrench and socket tool set, no other specialty tools required.

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Parts & Tools:

Permatex 22058 Dielectric Tune-Up Grease, 3 oz. Tube (prevents vacuum hoses from drying out as well as swelling).
https://amzn.to/3KHQYWC

New Mando 27A1081 Brake Power Booster Original Equipment
https://amzn.to/3xZcmPw

Milwaukee 2557-20 M12 Fuel 3/8″ Ratchet (Bare Tool)
https://amzn.to/3IUNLAv

ANTRobut 2 Pack 3000mAh Replacement Lithium 12V Milwaukee M12 Battery + M12 Rapid Charger for Milwaukee M12 Battery Charger
https://amzn.to/3xZSRGt

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Comments

Jose Sandoval says:

Hi if this brake booster is bad can it cause a vacuum leak??I own same car turbo engine and I've been having lean condition when I'm at stop light and my braking has been greatly reduced I feel like you said practically have to stand on it to stop.

•Lu Huynh• says:

Do we have to bleed at all?

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