Parasitic Draw

FIREFIGHTER MIKE

MEMBER
2001 LINCOLN NAVIGATOR
5.4L
V8
4WD
AUTOMATIC
123,000 MILES

I have had a issue with my battery being dead every morning. I have turned off every switch and knob I could find. I have a 300Ma, (I am using the 10 amp dial on my meter. It shows the draw at 300). I wait until the car has been sitting for an hour to ensure all functions have turned off. I have found the draw to be Maxi fuse #103 in my power distribution box under the hood. The fuse is for the Junction Box Battery Feed. When I pull the fuse, my draw drops to nothing. I have replaced the fuse but still have the draw.. Can you suggest where to go from here or maybe someone has had the same problem? I have never traced a circuit before, but I guess I need to learn.
I greatly appreciate your time.

1 Reply

CARADIODOC

MECHANIC
33,871 POSTS

A good place to start is by unplugging the GEM module. That's Ford's version of a Body Computer, and has caused a lot of problems. On the pickup trucks water drips onto it from a leaking windshield. Here is the location of the GEM and a guide to help us fix the problem.

https://www.2carpros.com/articles/car-battery-dead-overnight

Check out the diagrams (Below). Please let us know what happens.

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