2007-2009 Mazda CX7, The bcm body control module is located in driver side kick panel, remove the running board, remove the kick panel, remove a bolt on the bottom of the bcm ,unplug and cut off all wire ties to remove the body control module, you can remove the bottom cover to access the pcboard ,inspect for the water damage, if you see any water marks on the pcb use wd40 to clean the board,if that doesn't work you may need to replace the bcm