Toe/Haul just raises the shift points, and eliminates Overdrive. So you’re in first gear longer, second gear longer, etc., until you hit fourth gear where you’ll stay unless it needs to downshift for additional power.
You can certainly leave Tow/Haul off and see if your truck starts bogging down on the upshifts. If you’re in regular mode and hit hills, there’s nothing stopping you from manually downshifting, which you may very well have to do in tow/haul mode anyway.
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-Scott, DW, DG, DB, and DD
2011 Passport 2590BH
2009 Ford F150 SuperCrew F X4 5.4L w/Max Tow
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