# Service bulletin TSBCHA098

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: 10164365
- Published by NHTSA: 2019\-09\-06
- Manufacturer's number: TSBCHA098
- Manufacturer's date: 2019\-08\-14
- NHTSA component: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL

## NHTSA's summary

TSBCHA098: IBAU SYSTEM REPAIR GUIDE FOR NOISE AND AIR BLEEDING \- This bulletin provides the repair guide for the Integrated Brake Actuation Unit \(iBAU\) system on some 2014\-2019MY Kia 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-10164365-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164365-9999.pdf)

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

## Components

Electrical system

## 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

- [2024345](/recalls/tc/2024345.md), 2024-06-14: Electrical
- [23V724000](/recalls/nhtsa/23V724000.md), 2023-10-26: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\); ELECTRICAL SYSTEM:SOFTWARE
- [2023275](/recalls/tc/2023275.md), 2023-05-08: Electrical
- [23V218000](/recalls/nhtsa/23V218000.md), 2023-03-29: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [20V389000](/recalls/nhtsa/20V389000.md), 2020-07-02: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [2018537](/recalls/tc/2018537.md), 2018-09-28: Electrical

## Other bulletins for the same vehicles and component

- [SC367\_OWNR](/bulletins/11037394.md), 2026-09-19, Emissions: ELECTRICAL SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION \(SC367\) \- This document is the owner notification advising that Kia is conducting an important Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module \(ECM\) to ensure compliance with emissions regulations for 2019\-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T\-GDI engine.
- [SC367\_TSB](/bulletins/11037393.md), 2026-09-19, Service bulletin: ELECTRICAL SYSTEM; ENGINE. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2019\-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T\-GDI engine to ensure compliance with emissions. Kia has become aware that the subject vehicles may have been produced with engine calibrations that can cause the vehicle to release air pollutants that exceed Federal and California standards. These standards were established to protect the public’s health and welfare from the dangers of air pollution.
- [SC367\_STKR](/bulletins/11037392.md), 2026-09-19, Emissions: ENGINE; ELECTRICAL SYSTEM. SC367\_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
- [SC367\_POC](/bulletins/11037391.md), 2026-09-19, Emissions: ENGINE; ELECTRICAL SYSTEM. SC367\_POC: PROOF OF CORRECTION CARD
- [SC367\_QA](/bulletins/11037390.md), 2026-09-19, Emissions: ELECTRICAL SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER \(SC367\) – This document is the Question and Answer Guide containing the most frequently asked questions regarding Voluntary Emissions Service Campaign SC367.
- [SC367\_DPSM](/bulletins/11037389.md), 2026-09-18, Service campaign: ELECTRICAL SYSTEM; ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO \(SC367\) \- This document is the announcement to dealer Parts and Service managers advising that Kia is conducting an important Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module \(ECM\) to ensure compliance with emissions regulations for 2019\-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T\-GDI engine.
- [SC367\_DP](/bulletins/11037388.md), 2026-09-18, Emissions: ENGINE; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO \(SC367\) \- This document is the announcement to the dealer principals advising that Kia is conducting an important Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module \(ECM\) to ensure compliance with emissions regulations for 2019\-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T\-GDI engine.
- [TSB\_CLI049\_R2](/bulletins/11036628.md), 2026-09-02, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY/WIPER. TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR – ELECTRICAL A/C COMPRESSOR \- 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 regarding the partial repair of the Air Conditioning \(A/C\) compressor assembly on some 2011MY\~ Optima Hybrid \(TF HEV, JF HEV/PHEV\), 2015MY\~ Soul EV \(PS EV\), 2017MY\~ Niro \(DE HEV/PHEV/EV\), 2022MY\~ EV6 \(CV\), 2021MY\~ Sorento \(MQ4 HEV/PHEV\), 2023MY\~ Sportage \(NQ5 HEV/PHEV\), and 2023MY\~ Niro \(SG2 EV/HEV/PHEV\) vehicles.
- [SC269\_OWNR\_401](/bulletins/11035124.md), 2026-07-21, Service campaign: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION \(SC269 FLIGHT \#401\) \- This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to inspect and, if necessary, replace the high\-voltage fuse in 2013\-2016 MY Optima Hybrid vehicles.
- [TSB\_ELE417](/bulletins/11031906.md), 2026-05-01, Service bulletin: ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE \- This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia vehicles. The software downloads and USB preparation process is similar across all supported platforms; however, in‑vehicle installation procedures vary by head unit type.

JSON: [/v1/bulletins/10164365](/v1/bulletins/10164365)

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