Hyundai Sonata 2020–2023 — technical service bulletin
Bulletin 25-EE-002H TSB · NHTSA communication 11017341 · issued Apr 25, 2025
Technical service bulletin
communication type
Electrical System
component
2020–2023
model years
4
vehicle entries
Official summary
Certain Sonata (DN8) and Sonata (DN8A) vehicles may experience issues with the air conditioning due to damaged wiring in the engine room junction box. This bulletin provides instructions to replace the multi-fuse, reroute the damaged wiring using the blower wiring kit, and replace the fuse label.
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.