Kia Carnival (KA4) 2022-2026 Owner's Manual: Navigation-based Smart Cruise Control limitations
While the Navigation-based Smart Cruise Control (NSCC) system in your Kia Carnival is a sophisticated feature designed to enhance driving comfort, its performance is contingent upon the accuracy of the vehicle's navigation and GPS data. The NSCC may not operate as expected or may become temporarily unavailable under the following circumstances: System Status: The navigation system is experiencing a technical malfunction, is currently undergoing a software update, or is in the process of restarting while you are driving.