Thanks for using Just Answer, the transfer case shift relay #17 is located in the Power Distribution Box. I am sending you a diagram with the location, hope this helps you out.
Hello, I am John, a Ford dealer technician.
I hope I can help solve your problem quickly and accurately.
The relays are under the center of the dash on the top. There is a large oval cover on the top of the dash that starts to the left of center and goes to the right side. About 24" long and 5" wide. This snaps off and the transfer case relay is underneath. Please refer to attached diagram.
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