# Service bulletin TSBCHA098\_R1

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: 10164294
- Published by NHTSA: 2019\-09\-06
- Manufacturer's number: TSBCHA098\_R1
- Manufacturer's date: 2019\-08\-28
- NHTSA component: SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

TSBCHA098\_R1: IBAU SYSTEM REPAIR FOR NOISE AND AIR BLEEDING \- This bulletin has been revised to include additional information. 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/2019/MC-10164294-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164294-9999.pdf)

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

## Components

Brakes

## Vehicles listed

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

## Recalls for the same vehicles and component

- [2025003](/recalls/tc/2025003.md), 2025-01-07: Brakes
- [2024760](/recalls/tc/2024760.md), 2024-12-13: Brakes
- [2023529](/recalls/tc/2023529.md), 2023-09-26: Brakes
- [23V652000](/recalls/nhtsa/23V652000.md), 2023-09-25: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [21V331000](/recalls/nhtsa/21V331000.md), 2021-05-10: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [2020595](/recalls/tc/2020595.md), 2020-12-03: Brakes
- [20V519000](/recalls/nhtsa/20V519000.md), 2020-08-27: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [2019367](/recalls/tc/2019367.md), 2019-07-25: Brakes

## Other bulletins for the same vehicles and component

- [SC334\_OWNR\_201](/bulletins/11036313.md), 2026-08-21, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION \(SC334 Flight 201\) \- This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line\(s\) in certain 2014\-2019 MY Soul vehicles that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti\-corrosion material will be applied to the underbody components for added protection.
- [TSB\_SC334\_R1](/bulletins/11022353.md), 2025-09-02, Service bulletin: STRUCTURE:BODY; SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN UNDERBODY INSPECTION \& ANTI\-CORROSION MATERIAL APPLICATION \(SC334\) \- 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 information to apply additional anti\-corrosion material to underbody components, including inspection/replacement of the brake line\(s\), on certain 2014\-2019MY Soul \(PS\) vehicles produced from July 21, 2013 through December 24, 2018, and were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used. The 28 states where heavy amounts of road salt are used are: AK, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, ND, NE, NH, NJ, NY, OH, PA, RI, SD, UT, VT, WI and WV.
- [SC321\_OWNR\_201](/bulletins/11022350.md), 2025-09-02, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION \(SC321\) \- This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to address a potential corrosion concern with the Integrated Electronic Brake \(IEB\) in certain 2019\-2022 MY Niro EV vehicles that were originally sold in or are currently registered in one of the 28 states with high road salt usage.
- [SC334\_TSB](/bulletins/11019786.md), 2025-06-27, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: UNDERBODY INSPECTION \& ANTI\-CORROSION MATERIAL APPLICATION \(SC334\) \- This bulletin provides information to apply additional anti\-corrosion material to underbody components, including inspection/replacement of the brake line\(s\), on certain 2014\-2019MY Soul \(PS\) vehicles produced from July 21, 2013 through December 24, 2018, and were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used: AK, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, ND, NE, NH, NJ, NY, OH, PA, RI, SD, UT, VT, WI and WV.
- [SC334\_QA](/bulletins/11019720.md), 2025-06-25, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER \(SC334\) \- This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC334.
- [SC334\_OWNR](/bulletins/11019717.md), 2025-06-25, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION \(SC334\) \- This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line\(s\) in certain 2014\-2019 MY Soul vehicles that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti\-corrosion material will be applied to the underbody components for added protection.
- [SC334\_DPSM](/bulletins/11019716.md), 2025-06-25, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO \(SC334\) \- This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line\(s\) in certain 2014\-2019 MY Soul vehicles, manufactured from July 21, 2013 through December 24, 2018, that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti\-corrosion material will be applied to the underbody components for added protection.
- [SC334\_DP](/bulletins/11019658.md), 2025-06-19, Service campaign: SERVICE BRAKES. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO \(SC334\) \- This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the brake line\(s\) in certain 2014\-2019 MY Soul vehicles, manufactured from July 21, 2013 through December 24, 2018, that were originally sold in or are currently registered in states where heavy amounts of road salt are used. In addition, an anti\-corrosion material will be applied to the underbody components for added protection.
- [SC321\_TSB\_R1](/bulletins/11008143.md), 2024-09-30, Service campaign: SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: IEB INSPECTION AND WATER PROOFING OR IEB REPLACEMENT \(SC321\) \- 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 procedure to inspect the Integrated Electronic Booster \(IEB\) on certain 2019\-2022MY Niro EV \(DE EV\) vehicles produced from December 5, 2018 through April 12, 2022, that were originally sold or are currently registered in one of the 28 states where heavy amounts of road salt are used. Over time, saltwater inflow into the Integrated IEB at the IEB fastening bolt hole may cause corrosion and lead to an inoperable IEB motor. Should this occur, the vehicle may experience illumination of the Anti\-lock Brake System \(ABS\), Forward Collision\-Avoidance Assist \(FCA\) warning lights, and/or a firmer brake pedal feel. The brakes remain operational. Kia is conducting this service campaign to improve corrosion resistance of the IEB assembly.
- [SC321\_TSB](/bulletins/11008033.md), 2024-09-25, Service bulletin: SERVICE BRAKES. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: IEB INSPECTION AND WATER PROOFING OR IEB REPLACEMENT \(SC321\) \- This bulletin provides the procedure to inspect the Integrated Electronic Booster \(IEB\) on certain 2019\-2022MY Niro EV \(DE EV\) vehicles produced from December 5, 2018 through April 12, 2022, that were originally sold orare currently registered in one of the 28 states where heavy amounts of road salt are used. Over time, saltwater inflow into the Integrated IEB at the IEB fastening bolt hole may cause corrosion and lead to an inoperable IEB motor. Should this occur, the vehicle may experience illumination of the Anti\-lock Brake System \(ABS\), Forward Collision\-Avoidance Assist \(FCA\) warning lights, and/or a firmer brake pedal feel. The brakes remain operational. Kia is conducting this service campaign to improve corrosion resistance of the IEB assembly.

JSON: [/v1/bulletins/10164294](/v1/bulletins/10164294)

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