NHTSA Complaint #11695727 — 2024 KIA EV9

Description of the Problem: While driving my 2024 Kia EV9, the vehicle suddenly jerked and displayed a “Motor Control System” warning on the dashboard. The Kia Access app showed diagnostic code P0A4100 (MCU_R – Motor Control Unit fault). The issue causes the vehicle to hesitate and feel as if it loses power momentarily while in motion, creating a serious safety risk for me and my children. System/Component: The failure involves the Motor Control Unit (MCU) / electrical drivetrain system. The vehicle is available for inspection upon request. Safety Risk: The vehicle’s jerking and power fluctuation make it unsafe to drive in traffic, especially with children on board. It gives the sensation of being rear-ended and raises concern of potential stalling or loss of propulsion. Reproduction and Dealer Confirmation: The problem was reported to Sons Kia in McDonough, GA. The dealership initially inspected the vehicle on October 24, 2025, and returned it on [XXX], claiming the issue was addressed. However, the same warning and behavior reappeared less than 24 hours later ([XXX]). Inspections: The vehicle has been inspected by the Kia dealership service department. No outside parties (police or insurance) have inspected it yet. Warnings/Symptoms: The first warning appeared on [XXX], with the “Motor Control System” dashboard message and a corresponding alert in the Kia Access app. The issue continues to recur despite service. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)