How can I turn off the headlights while leaving car running on a 2007 Subaru Outback?
You can't turn off the headlights on a 2007 Subaru Outback while the car is running. Subaru's (and most modern cars) headlight systems are designed for safety, automatically turning on the headlights when the car is started and keeping them on until the car is fully turned off. This is to ensure visibility. There's no override switch or setting to disable this automatic functionality.