VDC Module
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of HYUNDAI MOTOR AMERICA
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Ambient Temperature is captured only when a vehicle is in motion. Thus, the A/C Control Unit (module) receives data on vehicle speed through CAN Communication lines to determine whether the vehicle is running or not.