Does any one know what the BEM module in BA GT falcon is. My GT wont lock and interior light stays on because it thinks a door is not closed. It is not the door switches. I have had it to ford and they arent sure but think it could be The body electrical module (BEM) . Is this common or does anyone have any information on this problem. Apparently this is a big job to replace

it's not a big job. the unit is attached to the bottom of the ICC, i would imagine you would have a high series BEM.