Service bulletin 25-BE-008H TSB
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 | 11016996 |
| Published by NHTSA | 2025-04-15 |
| Manufacturer's number | 25-BE-008H TSB |
| Manufacturer's date | 2025-04-04 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Certain vehicles (See Applicable Vehicles List below) equipped with the 12-inch instrument cluster display and separate Instrument Cluster Module require software verification PRIOR to odometer mileage writing. If the Cluster Module does not have the latest software, the incorrect mileage may be written to the new module. This bulletin provides information to confirm the Instrument Cluster Module is equipped with the latest software version prior to using the GDS tablet to write the odometer mileage.
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
| HYUNDAI IONIQ 5 N | 2025 |
|---|---|
| HYUNDAI KONA | 2024, 2025 |
| HYUNDAI KONA ELECTRIC | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| HYUNDAI SANTA CRUZ | 2025 |
| HYUNDAI SANTA FE | 2024, 2025 |
| HYUNDAI SANTA FE HYBRID | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| HYUNDAI SONATA | 2024, 2025 |
| HYUNDAI SONATA HYBRID | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| HYUNDAI TUCSON | 2025 |
| HYUNDAI TUCSON HYBRID | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| HYUNDAI TUCSON PLUG-IN HYBRID | 2025 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V400000 | 2026-06-23. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL |
|---|---|
| 26V047000 | 2026-01-26. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL |
| 2025529 | 2025-10-02. Electrical |
| 25V659000 | 2025-10-02. ELECTRICAL SYSTEM:STARTER ASSEMBLY |
| 2024708 | 2024-11-20. Electrical |
| 24V877000 | 2024-11-20. ELECTRICAL SYSTEM:WIRING |
| 24V843000 | 2024-11-07. ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS; VISIBILITY:SUN/MOON ROOF ASSEMBLY |
| 24V561000 | 2024-07-26. AIR BAGS; ELECTRICAL SYSTEM:WIRING |
| 2023709 | 2023-12-26. Electrical |
| 23V901000 | 2023-12-26. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 26-BE-025H TSB | 2026-09-09. Service bulletin. Some Tucson (NX4, NX4A, NX4M), Tucson Hybrid (NX4 HEV), and Tucson Plug-In Hybrid (NX4 PHEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra-Wide Band (UWB) and Body Domain Control (BDC) modules. |
|---|---|
| 26-BE-026H TSB | 2026-09-02. Service bulletin. Some Santa Fe (MX5A) and Santa Fe Hybrid (MX5A HEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra-Wide Band (UWB) and Body Domain Control (BDC) modules. |
| LA29-LA30 DCS | 2026-07-21. Warranty extension. Certain 2024-2026MY Sonata (DN8) and 2024-2026MY Sonata Hybrid (DN8 HEV) vehicles may exhibit intermittent battery discharge condition due to the air conditioning controller not fully powering down after the vehicle is turned off and parked. Technical Service Bulletins (TSB) 26-01-051H & 26-01-052H provide the procedure to update the ATCU (Air Temperature Control Unit) software; the revised logic improves controller shutdown to prevent battery drain and corrects a condition where the HVAC control display may appear blank when climate remote start is activated via Bluelink. Over-the-Air (OTA): This update can also be conducted via OTA. Customers can complete on their own if they have an active subscription to Hyundai Bluelink. A visit to the dealership is not required. Deployment of the OTA to Bluelink customers is planned to start the week of 07/13/26. |
| 26-01-052H TSB | 2026-07-21. Warranty extension. Certain Sonata Hybrid (DN8 HEV) vehicles may exhibit intermittent battery discharge conditions due to the air conditioning controller not fully powering down after the vehicle is turned off and parked. This bulletin provides the procedure to update the Air Temperature Control Unit (ATCU) software; the revised logic improves controller shutdown to prevent battery drain and corrects a condition where the HVAC control display may appear blank when climate remote start is activated via Bluelink. |
| 7/13/2026 TSB | 2026-07-21. Warranty extension. Certain Sonata (DN8) vehicles may exhibit intermittent battery discharge condition due to the air conditioning controller not fully powering down after the vehicle is turned off and parked. This bulletin provides the procedure to update the ATCU (Air Temperature Control Unit) software; the revised logic improves controller shutdown to prevent battery drain and corrects a condition where the HVAC control display may appear blank when climate remote start is activated via Bluelink. |
| 26-FL-003H TSB | 2026-07-08. Service bulletin. Some Kona (SX2) vehicles equipped with the 1.6L T‑GDI engine may exhibit false “engine left idling” notifications in the MyHyundai app, even when the engine is not running, due to a logic error associated with the front oxygen (O₂) sensor. This condition may also illuminate the Malfunction Indicator Lamp (MIL) and set DTC P223700 (O₂ Sensor Pumping Current Circuit/Open [Bank 1 Sensor 1]). This bulletin provides instructions to perform an ECU software update to correct the O₂ sensor logic and resolve the condition. |
| 26-EE-007H TSB | 2026-06-23. Service bulletin. Some Palisade (LX2), Tucson (NX4), and Tucson Hybrid (NX4 HEV) vehicles may experience battery drain due to continuous operation of the cooling fan after vehicle ignition has been turned off, potentially resulting in a no-start condition. The continuous cooling fan operation is caused by a stuck relay in the engine room PCB block. This bulletin provides instructions to replace the engine room PCB block to ensure the proper operation of the cooling fan. |
| 26-GI-002H TSB | 2026-06-06. Service bulletin. This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB. |
| 26-01-044H TSB | 2026-05-12. Warranty extension. Certain Santa Cruz (NXT) vehicles may experience Over-the-Air (OTA) update failures due to outdated Central Communication Unit (CCU) software. This bulletin provides instructions to perform a software update for the CCU. |
| 26-01-041H TSB | 2026-05-12. Warranty extension. Certain Tucson (NX4A) vehicles may experience Over-the-Air (OTA) update failures due to outdated Central Communication Unit (CCU) software. This bulletin provides instructions to perform a software update for the CCU. |