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Service bulletin TSB_ELE408

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 id11026753
Published by NHTSA2025-12-23
Manufacturer's numberTSB_ELE408
Manufacturer's date2025-12-18
Campaign id or software versionSA638
NHTSA componentELECTRICAL SYSTEM
Manufacturer's systemELE

NHTSA's summary

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: DCU REPLACEMENT (SA638) - This bulletin provides information to replace faulty Data Connectivity Units (DCUs) on certain 2026MY Sportage and 2025MY EV6 vehicles that may cause modem data to be missing on the Connected Car Navigation Cockpit (ccNC) head unit, resulting in Kia Connect failing to activate.

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 EV62025
KIA SPORTAGE2026

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

Recalls for the same vehicles and component
26V0460002026-01-26. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

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
PI2606_TSB2026-09-18. Service bulletin. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: This bulletin provides information to upgrade the 12-volt battery (“12V battery”) diagnostic software for certain 2025MY EV6 (CVa) vehicles produced from December 17, 2024 through November 5, 2025. The subject vehicles are equipped with a 12V battery which requires periodic inspection and maintenance. To provide enhanced monitoring of the 12V battery’s performance, the software upgrade will periodically conduct 12V battery performance tests and provide drivers with advance notice of sub-optimal 12V battery performance.
PI2606_OWNR2026-09-18. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION (PI2606) - This document is the owner notification advising that Kia is conducting an important Product Improvement Campaign on certain 2025 MY EV6 vehicles, manufactured from December 17, 2024 through November 5, 2025, to upgrade the 12-volt battery (“12V battery”) diagnostic software logic.
PI2606_QA2026-09-18. Other. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER (PI2606) – This document is the Question and Answer Guide containing the most frequently asked questions regarding Product Improvement Campaign PI2606.
PI2606_DPSM2026-09-18. Other. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (PI2606) - This document is the announcement to dealer Parts and Service managers advising that Kia is conducting an important Product Improvement Campaign on certain 2025 MY EV6 vehicles, manufactured from December 17, 2024 through November 5, 2025, to upgrade the 12-volt battery (“12V battery”) diagnostic software logic.
PI2606_DP2026-09-18. Other. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO (PI2606) - This document is the announcement to the dealer principals advising that Kia is conducting an important Product Improvement Campaign on certain 2025 MY EV6 vehicles, manufactured from December 17, 2024 through November 5, 2025, to upgrade the 12-volt battery (“12V battery”) diagnostic software logic.
PI2605_TSB2026-09-03. Other. TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: BMU LOGIC IMPROVEMENT (PI2605) - This bulletin provides information regarding a Battery Management System (BMS) software update for certain 2025-2026 EV6 (CV1 eGT, CVa) vehicles as listed in the table below. To improve the diagnostic monitoring of the high-voltage battery in the subject vehicles, Kia has developed enhanced BMS software to improve the detection logic and system response in cases of moisture intrusion into the high-voltage battery.
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.
PI2605_QA2026-08-29. Other. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER (PI2605) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign PI2605.
PI2605_OWNR2026-08-29. Other. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION (PI2605) - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign on certain 2025-2026 MY EV6 vehicles to upgrade the Battery Management System (BMS) diagnostic software logic. Our records indicate that you own or lease one of the potentially affected vehicles.
PI2605_DPSM2026-08-29. Other. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (PI2605) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Product Improvement Campaign on certain 2025-2026 MY EV6 vehicles, manufactured from December 17, 2024 through May 29, 2026, to upgrade the Battery Management System (BMS) diagnostic software logic.