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Service bulletin TSB_TRA046_R5

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11017172
Published by NHTSA2025-04-23
Manufacturer's numberTSB_TRA046_R5
Manufacturer's date2025-04-17
NHTSA componentPOWER TRAIN
Manufacturer's systemTRA

NHTSA's summary

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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
KIA CADENZA2014, 2015, 2016, 2017, 2018, 2019, 2020
KIA CARNIVAL2022, 2023, 2024
KIA CARNIVAL HYBRID2025 (the catalog's model; the bulletin names a series or trim of it)
KIA EV62022, 2023, 2024
KIA EV92024, 2025
KIA FORTE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
KIA K42025
KIA K52021, 2022, 2023, 2024, 2025
KIA K9002014
KIA K9002015, 2016, 2017, 2018, 2019, 2020
KIA NIRO2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KIA NIRO EV2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA NIRO PHEV2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA OPTIMA2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
KIA OPTIMA HYBRID2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
KIA RIO2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
KIA SEDONA2011, 2012
KIA SEDONA2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
KIA SELTOS2021, 2022, 2023, 2024, 2025
KIA SORENTO2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KIA SORENTO HYBRID2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA SORENTO PHEV2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA SOUL2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KIA SOUL EV2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
KIA SPORTAGE2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
KIA SPORTAGE HYBRID2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA SPORTAGE PHEV2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
KIA STINGER2018, 2019, 2020, 2021, 2022, 2023
KIA TELLURIDE2020, 2021, 2022, 2023, 2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V1150002025-02-24. ELECTRICAL SYSTEM:PROPULSION SYSTEM; POWER TRAIN:DRIVELINE:DRIVESHAFT
24V2710002024-04-16. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
20241872024-03-22. Powertrain
24V2140002024-03-20. POWER TRAIN:DRIVELINE:DRIVESHAFT
20240722024-02-08. Powertrain
20240542024-01-31. Powertrain
24V0570002024-01-31. POWER TRAIN:DRIVELINE:DRIVESHAFT
20235822023-10-27. Powertrain
23V7240002023-10-26. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL); ELECTRICAL SYSTEM:SOFTWARE
20234232023-08-01. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB_CHA129_R12026-09-30. Service bulletin. TECHNICAL SERVICE BULLETIN: AWD COUPLER NOISE/VIBRATION LOGIC IMPROVEMENT (Revision 1) - 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 upgrade the 4-Wheel Drive ‘4WD’ system software on some 2020-2025MY Telluride (ON) vehicles produced from January 08, 2019 through December 17, 2025. The affected vehicles may exhibit a noise and/or a vibration, shudder, jerking, binding, or chattering sensation while turning at low speeds (10MPH – 15MPH). This concern may be caused by decreased oil friction within AWD coupling due to continuous vehicle operation in harsh conditions (high/low ambient temperatures, extended duration/distance driving).
TSB_CHA128_CLSD2026-05-23. Service bulletin. TECHNICAL SERVICE BULLETIN: 4WD COUPLING NOISE/VIBRATION LOGIC IMPROVEMENT) - CLOSED & SUPERSEDED BY CHA129 - This bulletin is now closed and superseded by CHA129. This bulletin provides information to upgrade the 4-Wheel Drive ‘4WD’ system software on certain 2020-2022MY Telluride (ON) vehicles produced from January 09, 2019 through September 01, 2022. The affected vehicles may exhibit a noise and/or a vibration, shudder, jerking, binding, or chattering while turning at low speeds (10MPH – 15MPH) located from the 4WD coupling caused by a decrease in the oil friction of the 4WD coupling due to continuous vehicle operation in harsh conditions (high/low ambient temperatures, long time/distance traveling).
TSB_CHA1292026-05-23. Service bulletin. TECHNICAL SERVICE BULLETIN: AWD COUPLER NOISE/VIBRATION LOGIC IMPROVEMENT - This bulletin provides information to upgrade the 4-Wheel Drive ‘4WD’ system software on some 2020-2025MY Telluride (ON) vehicles produced from January 08, 2019 through December 17, 2025. The affected vehicles may exhibit a noise and/or a vibration, shudder, jerking, binding, or chattering sensation while turning at low speeds (10MPH – 15MPH). This concern may be caused by decreased oil friction within AWD coupling due to continuous vehicle operation in harsh conditions (high/low ambient temperatures, extended duration / distance driving).
SC363_TSB2026-05-01. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: OIL LEVEL PLUG (OLP) INSPECTION, AND OLP GASKET AND/OR ATF FILLER BOLT REPLACEMENT OR A/T REPLACEMENT (SC363) - This bulletin provides information to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and/or ATF filler bolt, or the 8-speed Automatic Transaxle (A/T) assembly on certain 2025-2026 Kia model vehicles listed in the table below. Also, dealers are to ensure the oil level plug is tightened to Kia’s factory specifications upon the completion of the inspection and necessary repair. The oil level plug in the subject vehicles may not have been installed properly during assembly. The oil level plug may be loose or detached from the 8-speed Automatic Transaxle (A/T) which may result in leaking automatic transmission fluid (ATF). A transaxle which is operated with excessively low ATF may become damaged over time.
SC363_QA2026-05-01. Service campaign. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC363) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC363.
SC363_OWNR_KA42026-05-01. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC363) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival vehicles to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s factory specifications. If necessary, the 8-speed Automatic Transaxle (A/T) may require replacement based on the inspection results.
SC363_OWNR_DL32026-05-01. Service campaign. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC363) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY K5 vehicles to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s factory specifications. If necessary, the 8-speed Automatic Transaxle (A/T) may require replacement based on the inspection results.
SC363_DPSM2026-05-01. Service campaign. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC363) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s factory specifications. Depending on the results of the inspection, the 8-speed Automatic Transaxle (A/T) may require replacement in 12 units of 2025-2026 MY K5 vehicles manufactured from April 7, 2025 through October 1, 2025, 5 units of 2026 MY Sportage vehicles manufactured from June 11, 2025 through August 19, 2025, and 184 units of 2025-2026 MY Carnival vehicles manufactured from February 20, 2025 through September 17, 2025.
SC363_DP2026-05-01. Service campaign. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC363) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s factory specifications. Depending on the results of the inspection, the 8-speed Automatic Transaxle (A/T) may require replacement in 12 units of 2025-2026 MY K5 vehicles manufactured from April 7, 2025 through October 1, 2025, 5 units of 2026 MY Sportage vehicles manufactured from June 11, 2025 through August 19, 2025, and 184 units of 2025-2026 MY Carnival vehicles manufactured from February 20, 2025 through September 17, 2025.
SC199_OWNR_SP2_32026-02-25. Emissions. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC199 FL301) - This document is the owner renotification advising that Kia is conducting Voluntary Service Campaign to update the software programming on the Transmission Control Module (TCM) and, if necessary, replace the Intelligent Variable Transmission (IVT) on certain 2021 MY Seltos vehicles.