dash lights go out when in auto mode

Hello, This may be an issue with an ambient light sensor, headlamp/dimmer switch, or headlamp control module/body control module. The ambient light sensor is used by the automatic headlights to detect lighting conditions. This lets them know that it is dark or light outside. If the gas station lights get bright after driving under the pavilion for the gas station, and get dark once you drive back into the dark road, it is likely a malfunction on this circuit.