Four Wheel Drive (4WD) Indicator (Escape, Mariner)
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The instrument cluster receives the 4WD information from the 4WD control module over the communication network. The module provides a 4WD status signal to the instrument cluster to illuminate the 4WD indicator.