Using "tow/haul" function on Ford Triton

You can shift anytime. With some practice you will figure out how to hesitate with the trottle and when to push it.

I used it a great deal. The obvious in mountains but inalso used it in any area with heavy traffic. Stopping assist saved me several times.

TNGW1500SE wrote:
You can push it anytime.

It resets every key cycle so you have to push it again.

On flat ground pulling light loads it will hurt your MPG since the trans stays in a lower gear.

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Play with it some, you can't hurt anything, well,,,, unless you push it when you're doing 150 MPH. You might want to stay in high gear then ;)

Just to make sure it's clear, Tow/Haul does not lock out the top gear; it's not an overdrive disable. It does alter the shift points between the various gears, among other changes to the control logic for the transmission, so under some circumstances you would end up in a lower gear with it engaged.

All the time, unless in stop and go driving, (shorter shifting time) I like the breaking and the quick downshifting will slow you down faster, safe driving for me.

I use it all the time. I like the higher shift points and the downshifts.

You can push it anytime.

It resets every key cycle so you have to push it again.

On flat ground pulling light loads it will hurt your MPG since the trans stays in a lower gear.

I pull a 10' cargo trailer and use mine on long down hills to slow down using engine braking. If I want to coast down the hill, I turn it off and let the motorhome "loose" to gain (or maintain) speed.

I'll sometimes push it on at the bottom of a hill to get a "jump" on the hill climb ahead. That way I go into the uphill in a lower gear.

You should use it like you would if you were downshifting a manual transmission. When on, the truck downshifts sooner & it helps hold the truck back on hills. It also allows you more power (when on) to climb hills. 99 miles out of 100 mine is off and I travel east TN and western NC. We have some hills!

Play with it some, you can't hurt anything, well,,,, unless you push it when you're doing 150 MPH. You might want to stay in high gear then ;)

Alright, then on my way back to Southern NJ from SW Fla, while towing our Jeep I should activate the TH the entire way?

Anytime I start the engine, the next move is to press the tow/haul regardless of if I have the toad attached.

As phil-t said, it doesn't matter when you press the button; you can do so any time (though, of course, it's not very useful to do so when the engine isn't running since it doesn't "stick"). You can be moving, standing still, in neutral, in park, in gear, backing up, free-falling off a cliff, etc.

With modern computer controlled automatic transmissions, you can move the shift lever willy-nilly without damaging the transmission or engine, for that matter. It won't downshift if doing so would cause the engine to overrev, even if you've told it to downshift by moving the shifter. That doesn't make arbitrary random shifting a recommended practice; it just means that you stand essentially no chance of harming your vehicle by shifting incorrectly.

Always use Tow Haul when you are towing {hence the name} but even if you are not towing the weight/load of the coach itself is more than enough reason to use tow haul... all of the time. Add a scan Gauge {or similar product} that gives you transmission fluid temps and you will quickly see the immediate benefit of using TH.

Occasionally I forget to engage TH and as soon as I encounter even a slight grade the trans fluid temp starts climbing. Happily I usually notice the Scan Gauge display and quickly correct by engaging TH. The temp will drop 12 - 15 degrees in just a couple of miles as TH locks up the torque converter eliminating heat generating friction.

Engaging TH accomplishes several things, all of them good. On steep climbs the shift points are adjusted for greater efficiency. As noted above on long downhill grades you can let the engine braking control your descent. A typical 6 - 12 mile 6 to 8 percent grade often requires zero brake pedal application and you are not burning a drop of fuel all the way to the bottom where you arrive with cool, fully functional brakes.

The impact of using TH on fuel economy is insignificant given the performance and safety benefits, many even report improved fuel economy. Sadly, the Tow Haul function is often neglected, misunderstood or just plain ignored... TH is your firend.

:C