Service bulletin 25-EM-005H 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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	11019881
Published by NHTSA	2025-07-01
Manufacturer's number	25-EM-005H TSB
Manufacturer's date	2025-06-24
NHTSA component	ELECTRICAL SYSTEM

NHTSA's summary

Certain 2022-2023MY Santa Cruz (NXT) vehicles may exhibit a warning lamp illumination for a diagnostic trouble code P218100 that is related to the Integrated Thermal Management Module (ITM). Follow the service procedure outlined in this bulletin to replace the ITM with a revised part and update the Engine/Electronic Control Unit (ECU).

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

Trouble codes named

P2181

Vehicles listed
HYUNDAI SANTA CRUZ	2022, 2023

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

Recalls for the same vehicles and component
2023147	2023-03-17. 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
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.
25-BE-020H TSB	2025-10-03. Service bulletin. This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.
25-01-045H TSB	2025-07-15. Service campaign. A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
25-BE-002H TSB	2025-06-03. Service bulletin. This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2024 2nd Navigation Map and Software Update Improvements section in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater (NAU) and updated by USB. The NAU website is https://update.hyundai.com/US/EN/navigationUpdate. For certain models equipped with a relevant Bluelink package, the software may be downloaded and applied via OTA update.
25-01-024H-1 TSB	2025-05-27. Service campaign. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
24-01-045H-2	2024-09-25. Service campaign. A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
24-01-045H-1	2024-09-07. Service campaign. A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
24-01-045H	2024-07-01. Service bulletin. A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
23-01-013H	2023-04-04. Service bulletin. Some 23MY Tucson and Santa Cruz vehicles' sunroofs were not programmed at the factory. This causes the sunroof to become inoperable. This bulletin provides information to program sunroof operation.
23-BE-003H	2023-04-03. Service bulletin. This bulletin outlines the repair procedure for some 22MY and 23MY Tucson and Santa Cruz vehicles that exhibit symptoms of no audio or intermittent sound from the vehicle's speakers.