Voluntary service campaign: aewp inspection and replacement (SC325)

Bulletin number

SC325_TSB (SC325)

Component

Electrical system

Summary

TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: AEWP INSPECTION AND REPLACEMENT (SC325) - This bulletin provides information to inspect and, if necessary, replace the Auxiliary Electric Water Pump (AEWP), control harness wiring, and/or engine room junction box for coolant intrusion and/or corrosion on certain 2023MY Niro Hybrid (HEV) and Plug-in Hybrid (PHEV), 2023MY Sportage HEV/PHEV, and 2022-2023MY Sorento HEV/PHEV Kia vehicles listed in this bulletin. The AEWP in the subject vehicles may crack internally and allow coolant to intrude into the AEWP circuitry. If coolant enters the AEWP circuitry, the Check Engine Light (CEL) may be illuminated with one or more DTCs listed on page 2. If the vehicle continues to be driven in this condition, the Active Air Flap (AAF) warning message can also activate, and coolant may eventually migrate through the wiring harness to the engine room junction block. This may result in a reduction of motive power and may cause the vehicle to release air pollutants which exceeds 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 76 complaints in the electrical category.