Wiper Activated Exterior Lamps

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

The BCM turns the exterior lamps on within 10 seconds of the windshield wipers being activated by the wiper/washer switch when the headlamp switch is in the AUTO position. Approximately 30 seconds after the windshield wipers turn off, the BCM turns the exterior lamps off.

If equipped with rain sensitive wipers, the BCM turns the exterior lamps on within 30 seconds of the rain sensitive wipers being activated by moisture detected on the windshield when the headlamp switch is in the AUTO position. Approximately 60 seconds after the rain sensitive wipers are deactivated (moisture no longer detected on the windshield), the BCM turns the exterior lamps off.

The SCCM sends a message to the BCM over the HS-CAN indicating the windshield wiper motor status.