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4X4 High Light Flashing

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Old 12-17-2011, 12:45 PM   #1
Magnatek
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4X4 High Light Flashing

I am working on my girlfriends 2003 Explorer XLT. We replaced the transmission and on the test drive after the re-install the 4X4 High light in the dash flashes about 5-10 times every couple of minutes. The buttons on the dash (4X4 auto & high) don't do anything when pressed and the 4X4 low button just flashes 10 times or so when you press it. So, no 4 wheel drive.

We did disconnect the battery cable during the process and I am wondering if that blew the module behind the glove box? I searched the forums and it seems that it may be the cause. Can anyone verify this, or have any other ideas? Thanks for your time.
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Old 12-26-2011, 01:01 PM   #2
BigRondo
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Welcome aboard!!

It's hard to say what the issue is. The only way I know to know for sure what the problem is, besides throwing parts at it until it is fixed, is to get the codes read at the dealer.

I recommend checking all the connections on the the transfer case motor. When my 4x4 lights were flashing, and I had no 4x4, it turned out to be a bad ground on the transfer case motor. I replaced the 4x4 control module and the switch before the bad ground was discovered.

Good luck with the fix and be sure to keep us posted.




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Old 12-27-2011, 10:24 AM   #3
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Thanks for the reply. We test drove it right away after the re-install and that's when the problem developed. We put it back on the lift right away and found the ground wire you are talking about corroded and broken. I soldered on a new connector and hooked it back up. The problem was still there. After about 1 day, it stopped flashing and the button (4X4 high) started working, at least the light on the dash came on when the button was pressed. I tried to get it into low but nothing worked. I assume this means at least the high is working? When you press the 4X4 auto button, the high light goes off in the dash. Does that sound correct?
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Old 12-27-2011, 10:39 AM   #4
jaydez
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Originally Posted by Magnatek View Post
Thanks for the reply. We test drove it right away after the re-install and that's when the problem developed. We put it back on the lift right away and found the ground wire you are talking about corroded and broken. I soldered on a new connector and hooked it back up. The problem was still there. After about 1 day, it stopped flashing and the button (4X4 high) started working, at least the light on the dash came on when the button was pressed. I tried to get it into low but nothing worked. I assume this means at least the high is working? When you press the 4X4 auto button, the high light goes off in the dash. Does that sound correct?
Did you put the transmission in neutral, set the parking brake and press and hold the 4x4 low button?




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