TSB 25-EM-007H — Hyundai Service bulletin
25-EM-007H is a service bulletin on file with NHTSA for 2 Hyundai models, 2021–2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Some Elantra (CN7, CN7A), Kona (OS, SX2), and Sonata Hybrid (DN8 HEV) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management Module (ITM). Follow the service procedure in this…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 25-EM-007H names
| Vehicle | Model years |
|---|---|
| Hyundai Elantra | 2021, 2022, 2023 |
| Hyundai Kona | 2022, 2023, 2024, 2025 |
Every document filed under 25-EM-007H
| Document ID | Filed | Type |
|---|---|---|
| 25-EM-007H TSB | December 18, 2025 | Service bulletin |
What 25-EM-007H covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 25-EM-007H?
25-EM-007H is a service bulletin filed with NHTSA by Hyundai, covering 2 Hyundai models across the 2021–2025 model years. NHTSA's summary reads: Some Elantra (CN7, CN7A), Kona (OS, SX2), and Sonata Hybrid (DN8 HEV) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 (Cooling System Performance) related to the Integrated Thermal-Management Module (ITM). Follow the service procedure in this…
Which vehicles does 25-EM-007H cover?
NHTSA's file names Hyundai Elantra (2021–2023); Hyundai Kona (2022–2025). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 25-EM-007H a recall, and is the repair free?
No. 25-EM-007H is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 25-EM-007H?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 25-EM-007H, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 25-EM-007H. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.