Tom_Anderson wrote:
rjstractor wrote:
Tom_Anderson wrote:
It's an "O/D Off" button. I have one on my 2002 F-250 with a 4R100 transmission, too. The Tow/Haul mode wasn't a thing until the 5R110W transmission was introduced.
The OPs rig is a 2006 model. IIRC the 5R110W was being used in the E-series by then.
Yup, but pianotuna was talking about his rig, which is a 2004. That's why he said it turns off the O/D, which is true for his rig, but is not the case with the OP's rig.
Ugghh, pretty sure the OP was asking about his own rig, not pianotuna's! :S