Hyundai Elantra 2024 — technical service bulletin
Bulletin 25-EM-003H · NHTSA communication 11017475 · issued Apr 30, 2025
Technical service bulletin
communication type
Engine
component
2024
model years
1
vehicle entries
Official summary
Certain 2024MY Elantra (CN7) vehicles may produce a coolant leak from the Heat Exchange Port on the Integrated Thermal Management (ITM) Module assembly. Follow the procedure outlined in this TSB to replace the Heat Exchange Port at the ITM assembly.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.