Daytime Running Lights & Auto Headlights

If headlight switch is in AUTO position while ambient light sensor is in light state, Daytime Running Lights (DRL) are on. If parking brake is set, DRL will turn off until parking brake is released. If headlight switch is in PARK LAMP position while in light state, DRL and parking lights will be on. If headlight switch is in HEADLAMP position while in light state, DRL will be off and both the parking lights and the headlights will be on. If headlight switch is in AUTO position while in light state and ambient light sensor changes to dark state, BCM will turn headlights after 15 seconds. When ambient light sensor is in dark state, DRL will be off regardless of headlight switch position. When ambient light sensor changes form dark to light state, headlights will turn off and DRL will turn on after 20 seconds.