The DBC indicator will illuminate when the DBC button is pressed and the system is on.
When driving down a steep hill at a speed under 35 km/h (22 mph), the DBC will operate and the DBC indicator will blink to indicate the DBC is operating.
If the red indicator illuminates, the DBC system may have malfunctioned. Take your vehicle to an authorized Kia dealer and have the system checked.
Body Control Module (BCM): Schematic Diagrams
Circuit Diagram
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Line Pressure Control Solenoid Valve: Description and Operation
Description
line pressure control solenoid valve is attached to the valve
body. This variable force solenoid valve directly controls the
hydraulic pressure inside the line pressure. ...