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The 1999-2004 Ford F150 4X4 Multifunction Gem BCM Interior Module 3L34-14B205-Aa serves as the central control unit for various interior functions in the vehicle. It manages features like interior lighting, power windows, door locks, and other electrical components. Additionally, in 4X4 models, it controls functions related to the four-wheel-drive system, such as engagement and monitoring.
