Kia K4 2025 — technical service bulletin
Bulletin OTA_SA620 · NHTSA communication 11023288 · issued Sep 12, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
1
vehicle entries
Official summary
RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION: SOFTWARE UPDATE FOR RCM (SA620) - This Over-the-Air (OTA) software update is designed to update the Roof Control Module (RCM) of certain 2025 K4 vehicles. This update is designed to improve software logic for a smoother sunroof response during one-touch actuation.
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.