Rear Window Defrost
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The smart junction box (SJB) controls power to the heated backlight by controlling the state of the heated backlight relay. When the rear window defrost switch is pressed, the SJB will activate the heated backlight relay. When the heated backlight relay is active, the heated backlight will be energized.
The SJB will deactivate the heated backlight relay when one of the following conditions is met:
- The rear window defrost switch is pressed when the feature is active.
- Ignition switch state is changed from RUN to off/lock.
- The 17-minute timer completes.