Technical Service Bulletin OTA_SA621 — 2025 KIA K4
ENGINE
Bulletin Details
| TSB ID | OTA_SA621 |
| Manufacturer | |
| Vehicle | 2025 KIA K4 |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION SOFTWARE UPDATE FOR WARNING LIGHTS (SA621) - This Over-the-Air (OTA) software update is designed to update the Engine Control Unit (ECU) logic of certain 2025 K4 vehicles. This update improves the processing logic of the Engine Control Unit (ECU) to reduce the unintended display of warning lights.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2025 KIA K4
OTA_SA621
ELECTRICAL SYSTEM
TSB_ENG258
ENGINE
OTA_SA620
ELECTRICAL SYSTEM
PS791
ELECTRICAL SYSTEM
TSB_ELE385
ELECTRICAL SYSTEM
TSB_ELE390
ELECTRICAL SYSTEM
TSB_ELE363_CLSD
ELECTRICAL SYSTEM
TSB_ELE384
EXTERIOR LIGHTING
TSB_ELE341_R4
ELECTRICAL SYSTEM
TSB_BOD338_R1
VISIBILITY/WIPER