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I have a 2002 Explorer EB with control trac (auto 4x4) and when I push the 4x4 high dash button or the 4x4 low button, I get no indicator light or anything. I checked the fuse under the hood (#18) removed it, and replaced it with another (although nothing wrong visably with the old fuse). I then pushed the butoons again and found system working. I go for a drive in the auto mode and when I return home I get the same problem as before. No indicator lights. I check the fuse again (not blown) replace it and find the system working. Seems like the system resets itself each time I change the fuse. This is frustrating... Has anyone heard of this before and if so where do I look next.
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Good luck with your problems.
Enjoy FTE
My guess, is that a Sensor is throwing a status code that keeps the transfer case from switching. This code remains in the system till the system looses power (pulling fuse) Then the system works until the sensor throws the code again. I don't know much about the particular transmission/Transfer Case in your model, but this might give you somewhere to look untill someone else responds. To confirm that this is the case, you can disconnect the battery for 15 minutes, then see if that as well makes the system work again.
Autozone will read codes for free... so even if the CEL is not on, I would bring it to them and see if anything comes up. If so, then post back here and we should be able to help you figure it out.
Thanks for your help, I thought it may be a sensor, but not knowing where to look I have called the Ford dealer and they will scan it for free (no kidding) as I purchased used from them. I will post when I find the answer.
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