Iccu-vcu s/w upgrade for ewp operation and iccu replacement (SA570)

Bulletin number

TSB_ELE339_R1 (SA570)

Component

Electrical system

Summary

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: ICCU-VCU S/W UPGRADE FOR EWP OPERATION AND ICCU REPLACEMENT (SA570) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to improve the Electric Water Pump (EWP) operation logic when the EV battery is being charged with a Level 1 or Level 2 (120-240 Volt) AC charger on certain 2024MY EV9 (MV) vehicles produced from September 25, 2023 through January 11, 2024. A disparity may occur between the actual temperature and sensed temperature of the Integrated Charging Control Unit (ICCU) during high-current AC charging, predominantly in cold weather environments. If this condition occurs, the ICCU may become damaged and exhibit a MIL ‘ON’ with the DTC(s) listed below, resulting in a stopped charging session and inability to charge using Level 1 or 2 AC chargers; however, the EV battery can still be charged using Level 3 DC fast charging, and the vehicle's drivability is unaffected. This software upgrade may also be available via Over The Air (OTA) through Kia Connect if it has been activated.

Owners of these vehicles have filed 104 complaints in the electrical category.