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The Body control module controls what happens when you turn the key. It powers up the Engine computer and various other computers. It also controls the headlights and a lot of other accessories. For example it will turn on day time running lamps when you start the car. If you leave the headlights on after turning off the car it will leave the headlights on for .5 hr afterwards and then it will turn them off for you so it wont kill the battery. The BCM (Body control Module) has a bunch of fuses in it along with a computer that you probably cant see due to the fact that is encapsulated in plastic. Hope this helps!

where on the car is it

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15y ago

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