# Service bulletin TSB\_CHA098\_R3

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10179256
- Published by NHTSA: 2020\-09\-03
- Manufacturer's number: TSB\_CHA098\_R3
- Manufacturer's date: 2020\-08\-07
- NHTSA component: EQUIPMENT; SERVICE BRAKES, HYDRAULIC:FLUID

## NHTSA's summary

TECHNICAL SERVICE BULLETIN: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the repair procedure for the Integrated Brake Actuation Unit \(iBAU\) system on some 2014\-2019MY EV/Hybrid/Plug\-In Hybrid vehicles listed \(see table\), which may exhibit a "honking" \(Hissing\) noise due to air remaining in the brake fluid system.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179256-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179256-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes, Equipment and accessories, Brake fluid

## Vehicles listed

- 2017 to 2019 KIA NIRO
- 2019 KIA NIRO EV
- 2017 KIA NIRO HYBRID
- 2017 to 2018 KIA NIRO PHEV
- 2019 KIA NIRO PLUG\-IN HYBRID
- 2014 to 2019 KIA OPTIMA
- 2014 to 2019 KIA OPTIMA HYBRID
- 2016 to 2019 KIA OPTIMA PHEV
- 2015 to 2020 KIA SOUL
- 2015 to 2019 KIA SOUL EV
- 2018 KIA redundant NIRO

JSON: [/v1/bulletins/10179256](/v1/bulletins/10179256)

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