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Service bulletin PS748

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 id10237607
Published by NHTSA2023-07-01
Manufacturer's numberPS748
Manufacturer's date2023-06-06
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

PITSTOP: SHARING KIA CONNECT CREDENTIALS WITH THIRD-PARTY APPS AND POTENTIAL IMPACT TO 12V BATTERY IN EVS - Kia is aware of reports of unexpected drainage of the 12-volt battery in some Kia electric vehicles (EVs). While Kia’s investigation is ongoing, a possible cause of the issue may be third-party applications used by the customer that are causing excessive Kia Connect connections to the customer’s EV.

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

Electrical system

Vehicles listed
KIA EV62022, 2023
KIA NIRO EV2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
KIA SOUL EV2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
KIA redundant NIRO2018

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

Recalls for the same vehicles and component
26V4310002026-07-02. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
25V0240002025-01-17. SEATS; ELECTRICAL SYSTEM:WIRING
24V8670002024-11-18. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:SOFTWARE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY
20243452024-06-14. Electrical
24V3580002024-05-21. ELECTRICAL SYSTEM:PROPULSION SYSTEM:SHOCK PROTECTION
24V2000002024-03-14. ELECTRICAL SYSTEM:12V/24V/48V BATTERY
23V7240002023-10-26. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL); ELECTRICAL SYSTEM:SOFTWARE
23V2980002023-04-26. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
23V2180002023-03-29. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
20226892022-12-06. Electrical

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_CLI049_R22026-09-02. Service bulletin. 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.
TSB_ENG2632026-08-28. Service bulletin. TECHNICAL SERVICE BULLETIN: MISFIRE CONCERN DUE TO OVERRUNNING ALTERNATOR DECOUPLER - This bulletin provides information to address unresolved misfire events on some 2020–2024MY Forte (BDm) produced from January 1, 2019 through September 30, 2024, and 2020–2022MY Soul (SK3) vehicles produced from November 1, 2018 through May 31, 2022 equipped with a Gamma 1.6L T‑GDI engine. In certain cases, misfire symptoms may persist after completing normal diagnostic procedures and replacing ignition‑related components (spark plugs, ignition coils, and fuel injectors). If misfire concerns remain after these repairs are performed, excessive torsional oscillation of the Overrunning Alternator Decoupler (OAD) pulley may be the contributing factor. This bulletin provides the procedure to replace the OAD pulley with the updated Overrunning Alternator Pulley (OAP) kit and associated damper components.
TSB_ELE4262026-08-27. Service bulletin. TECHNICAL SERVICE BULLETIN: AVN GEN 5.0 WIDE SOFTWARE UPDATE - This bulletin provides information on the Audio Video Navigation (AVN) system software update for certain vehicles equipped with AVN5W and Navigation System listed in the table below. Affected vehicles may overestimate travel times during route calculation.
PI2603Y_TSB2026-07-18. Service bulletin. 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_TSB2026-06-17. Service bulletin. 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_OWNR2026-06-17. Other. 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_QA2026-06-17. Other. 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_DPSM2026-06-17. Other. 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_DP2026-06-17. Other. 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_ELE4222026-06-03. Service bulletin. TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may improve system performance, enhance existing features, and apply the latest operating software for supported vehicles (2021-2026MY All Models).