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I believe you can turn TPMS back on with the H&S.
It MAY be screwing up the IDS because the way H&S turns TPMS off does not COMPLETELY turn the TPMS off in all the modules. If you notice, the TPMS lamp still proves out when you cycle the key.
Like I said, I don't know for sure, but I would go back to stock stock stock on everything before trying it.
I just pulled up a previous session on IDS of my buddy's truck, and the TPMS is turned off via H&S. I can pull up the TPMS pressure setting menu in programmable options, but both front and rear are showed as 38psi. So I'm not sure if you just program the pressures back in using IDS or you have to restore the asbuilt data.
Basically, the way I see it right now is IDS may not see the module as fully configured if the TPMS is showed at 38psi on front and rear.
This is just speculation at this point, however.
Ford Senior Diesel Technician
2008 F-350 4x4 Off Road 6.4 Powerstroke Diesel
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