First off I want to say I love my 11 f350 6.3 srw she's a awesome truck.
I pull a small 7x14 trailer for my biz
(3600-400) is the usually weight, I always use my tow feature. One day last week I start out hit my button in go, but I notice the engine braking/down shifting wasn't working. The trans still shifts smooth n normal the light is on the dash but no tow engage.
i check the transmission wire plug to make sure it'd gettibg a good connection, it does. I take the rubber boot off next to the shifter look at those wires they look ok not pinch or nothing, so I'm stump has anyone had this problem

 

Bump
​​​​​​​anybody got any ideas

 

That's kind of odd, I haven't heard of that before. I'd suggest having it scanned for trouble codes by a scanner capable of reading Ford-specific codes.

 

I've had it scanned twice an nothing

 

What kind of scanner did you use? The cheap ones won't find transmission codes.

 

Is there an indicator in the dash when you turn it on? Is maybe the switch worn out or broken?

 

Transmission shop scanned it, showed nothing
The light comes on the dash as soon as you push the button.
The trans shifts fine as normal