Bdc-bcm logic improvement for DTC C1126 (SA579)

Bulletin number

TSB_ELE348_R1 (SA579)

Component

Electrical system

Summary

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: BDC-BCM LOGIC IMPROVEMENT FOR DTC C1126 (SA579) - 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 Body Domain Controller (BDC) – Body Control Module (BCM) operation logic on certain 2024MY EV9 (MV) vehicles produced from September 25, 2023 through February 21, 2024. The BDC Motor Control Unit (MCU) may incorrectly read the 12V auxiliary battery voltage as 0V. If this condition occurs, the tire pressure monitoring system (TPMS) light will blink for approximately one (1) minute and then remain illuminated, with the DTC C1126. 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.