DTC C1526-01: DBC Switch Error: General Description
WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
DBC (Down Hill Control) is a system that allows you to maintain a constant vehicle speed on the road on the downhill without additional pedal operation.
DBC switch is the control signal of ESC system at inclined road by driver's handling intention.