# Service bulletin TSB\_ELE234\_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: 10193244
- Published by NHTSA: 2021\-05\-19
- Manufacturer's number: TSB\_ELE234\_R1
- Manufacturer's date: 2021\-05\-13
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; POWER TRAIN

## NHTSA's summary

TECHNICAL SERVICE BULLETIN: DRIVE UNIT INSPECTION \& REPLACEMENT FOR EV MOTOR RUMBLE NOISE \- 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 and repair the EV motor drive unit and reduction gear on some 2019MY\~ Niro EV \(DE EV\) vehicles produced from December 5, 2018, which may exhibit an abnormal rumble noise while driving \(refer to noise sample videos below\). The rumble noise may be heard repeatedly when the traction motor is operating, while driving slowly in "D" range, or when slowly accelerating/decelerating between 0\~25 mph.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10193244-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10193244-9999.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline

## Vehicles listed

- 2019 to 2020 KIA NIRO EV

## Recalls for the same vehicles and component

- [2023423](/recalls/tc/2023423.md), 2023-08-01: Powertrain
- [23V534000](/recalls/nhtsa/23V534000.md), 2023-07-31: POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS:ACTUATORS/SOLENOIDS
- [2022689](/recalls/tc/2022689.md), 2022-12-06: Electrical
- [22V899000](/recalls/nhtsa/22V899000.md), 2022-12-06: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:FLUID/COOLANT

## Other bulletins for the same vehicles and component

- [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.
- [PI2603Y\_TSB](/bulletins/11035089.md), 2026-07-18, Service bulletin: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: BSA REPLACEMENT \(PI2603Y\) \- This bulletin provides information related to the Technical Service Bulletin previously published under PI2603, titled “BMS Battery Diagnostic Logic Improvement.” If one or more of the Diagnostic Trouble Codes \(DTCs\) listed in the bulletin are present or stored after the Battery Management System \(BMS\) software upgrade has been performed per PI2603, follow the procedure outlined in this publication to replace the Battery System Assembly \(BSA\) on the applicable vehicle.
- [PI2603\_TSB](/bulletins/11033933.md), 2026-06-17, Service bulletin: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: BMS BATTERY DIAGNOSTIC LOGIC IMPROVEMENT \(PI2603\) \- This bulletin provides information regarding a Battery Management System \(BMS\) software update for certain 2020–2022MY Niro \(DE EV\) vehicles produced from June 2, 2020, through November 8, 2021. Kia has developed improved battery health monitoring software to enhance the BMS diagnostic performance of the high\-voltage battery \(HVB\) cells produced by a specific supplier in the subject vehicles. This improved software will enhance the long\-term issue detection capabilities of the high\-voltage battery in the subject vehicles.
- [PI2603\_OWNR](/bulletins/11033932.md), 2026-06-17, Other: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION \(PI2603\) \- This document is the owner notification advising that Kia is conducting a Product Improvement Campaign to update the battery management system \(BMS\) software to enhance battery diagnostic performance in certain 2020\-2022 MY Niro EV vehicles.
- [PI2603\_QA](/bulletins/11033931.md), 2026-06-17, Other: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER \(PI2603\) \- This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign PI2603.
- [PI2603\_DPSM](/bulletins/11033930.md), 2026-06-17, Other: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO \(PI2603\) \- This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Product Improvement Campaign to update the battery management system \(BMS\) software to enhance battery diagnostic performance in certain 2020\-2022 MY Niro EV vehicles manufactured from June 2, 2020 through November 8, 2021.
- [PI2603\_DP](/bulletins/11033929.md), 2026-06-17, Other: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO \(PI2603\) \- This document is the announcement to the dealer principals advising that Kia is conducting a Product Improvement Campaign to update the battery management system \(BMS\) software to enhance battery diagnostic performance in certain 2020\-2022 MY Niro EV vehicles manufactured from June 2, 2020 through November 8, 2021.
- [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.
- [TSB\_TRA046\_R5](/bulletins/11017172.md), 2025-04-23, Service bulletin: POWER TRAIN. TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE \- 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 relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, and the transmission oil cooler is transferred to the new transmission.
- [TSB\_ENG222\_R8](/bulletins/11017109.md), 2025-04-18, Service bulletin: ENGINE. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- 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 on diagnosing and/or repairing some 2011\-2024MY vehicles \(refer to the table on pages 9 and 10 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.

JSON: [/v1/bulletins/10193244](/v1/bulletins/10193244)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20TSB_ELE234_R1&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10193244&vehicle=Service%20bulletin%20TSB_ELE234_R1)