Voluntary emissions service campaign: hybrid control unit (hcu) logic improvement (SC322)

Bulletin number

TSB_SC322_R1 (SC322)

Component

Electrical system

Summary

TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: HYBRID CONTROL UNIT (HCU) LOGIC IMPROVEMENT (SC322) - 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 the procedure to update the software logic of the Hybrid Control Unit (HCU) system on certain 2023-2025MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 through July 25, 2024 and Sportage PHEV (NQ5 PHEV) vehicles produced from June 16, 2022 through July 24, 2024. The Hybrid Control Unit (HCU) in the subject vehicles may intermittently receive repeated “accelerate” CAN signals due to a signal processing error involving specific instrument clusters when customers “set” or “resume” cruise control. This concern can occur after the driver rapidly presses the “accelerate” rocker switch on the steering wheel. This does not affect the driver’s ability to pause, cancel or turn off the cruise control function. This condition may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect the public health and welfare from the dangers of air pollution.

Owners of these vehicles have filed 53 complaints in the electrical category.