You can find The Body Control Module (BCM) in a 2008 Jeep Liberty located in the passenger compartment. Check the driver's side, under the dashboard. It's often mounted on the firewall or near the fuse box, making it accessible but kindder hidden from plain view. you may also, have to remove some trim panels or other components for a clear path to access it well.

Watch the video to the end, and you will find your permanent solution.