2024-2025 Hyundai Cluster Software Verification TSB

Hyundai Technical Service Bulletin (TSB) 25-BE-008H, issued in April 2025, outlines a crucial procedure for 2024-2025 Hyundai vehicles equipped with a 12-inch instrument cluster display and a separate Instrument Cluster Module. This bulletin emphasizes the necessity of Hyundai cluster software verification prior to writing odometer mileage to a new module. Failure to perform this verification can lead to incorrect mileage being recorded.

What's the Problem?

When a new 12-inch Instrument Cluster Module is installed in affected Hyundai vehicles, its software version must be checked and confirmed as current before any odometer mileage is written. If the module contains an older software version, writing the mileage to it will result in an inaccurate odometer reading. This TSB provides the necessary steps to ensure proper Hyundai cluster software verification.

Important Warnings for Owners and Technicians

Hyundai has issued several critical warnings related to this procedure:

• "Any affected IONIQ vehicles must have repairs performed at IONIQ certified dealers to avoid any potential damage."
• "If the software version does NOT match what is listed on the table or newer, then return the cluster module and order another unit."
• "If the Instrument Cluster Module requires a replacement, then perform the VARIANT CODING BEFORE attempting to perform the mileage writing. Failure to do so may damage the module."
• "The GDS tablet may NOT display the correct mileage." Technicians must verify the mileage on the vehicle's display screen.

Instrument Cluster Module ROM ID Information

TSB 25-BE-008H includes a critical table detailing the required ROM ID software versions for each specific model, model year, and instrument cluster module part number. This table is essential for technicians to perform the Hyundai cluster software verification correctly. It lists various ROM IDs, such as CP12_M.MCU.HMC.ALL.0000.V008.062.240807* and CP12_M.AP.HMC.ALL.0000.V008.061.240906*, which must be matched or newer than the software on the new module. Instrument Cluster Module Part Numbers like 940C3-NI100, 940C3-BE300, and 940C3-BF300 are also referenced. Technicians should consult the full TSB for the complete and most up-to-date list of ROM IDs and part numbers.

Diagnosis and Repair Procedure Summary

Initial Cluster Check

Technicians must first identify whether the vehicle is equipped with a 4-inch or 12-inch instrument cluster display. This specific software verification process is only required for vehicles with the 12-inch display.

Software Verification

For vehicles with a 12-inch cluster, after a new Instrument Cluster Module has been installed, its software must be verified against the ROM ID table provided in TSB 25-BE-008H. This is a crucial step for proper Hyundai cluster software verification.

Using the GDS Tablet

1. The GDS tablet must be connected to the vehicle.
2. From the GDS main screen, select the "Tool Box" menu option.
3. Proceed to select "System Identification."
4. Choose "CLU" (Cluster Module) and specify its size (12-inch). It is important to deselect the "ENGINE" module, which may be a default selection.
5. The GDS will then display the Vehicle Part Number (CLU) and the current software version of the module. This information is vital for comparison.
6. The displayed software version must be compared to the ROM ID table in the TSB. If the module's software is older than what is listed, the module is considered "DEFECTIVE" and must be returned for a replacement.

Mileage Writing

Once the software version is confirmed to be current or newer, technicians must perform "VARIANT CODING" before proceeding with the "Odometer Mileage Writing Function" by following the instructions provided by the GDS tablet.

Final Verification

After completing the entire procedure, it is essential to confirm that the correct mileage is displayed on the vehicle's "VEHICLE DISPLAY SCREEN." The GDS tablet itself may not always show the correct mileage, making direct verification on the vehicle's cluster critical.

Warranty Information

Hyundai states that "Normal Warranty Applies" to this service procedure. For specific operation codes and labor times, technicians should refer to WebLTS.

What Owners Should Do

If you own a 2024-2025 Hyundai model with a 12-inch instrument cluster and believe your Instrument Cluster Module has been replaced or requires service involving mileage writing, it is important to contact a Hyundai certified dealer. They have the necessary tools and information, including TSB 25-BE-008H, to perform the correct Hyundai cluster software verification and ensure accurate odometer readings.

NHTSA ID: 11016996