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Old 07-05-2015, 08:12 PM   #1
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Tow with tow/haul mode on or off?

When I was towing my travel trailer with my F-150, I turned overdrive off. But now with the Sunseeker, I am getting ready to tow a Honda CRV. Should I have tow/haul mode on or off for towing with a class C?

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Old 07-05-2015, 08:17 PM   #2
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Tow/haul switch reduces frequent transmission shifting.
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Old 07-05-2015, 08:19 PM   #3
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not sure why a class A or C even has the tow haul button. It's always hauling, the house that was put on the chassis.
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Old 07-05-2015, 10:45 PM   #4
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In a GM truck when you engage tow haul mode it will also boost the voltage on the charge wire back to whatever you are towing. Don't know if a GM cab and chassis would be the same. Don't know about other brands.

You can always increase the charge voltage on any vehicle by turning on your headlights.
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Old 07-05-2015, 11:09 PM   #5
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I use Tow/Haul on always! Changes shift point providing better towing performance. I used it with F 150's, E350 and E450 Cube Chassis very similar loading to your MH and now with my F 250.
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Old 07-06-2015, 12:19 AM   #6
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Originally Posted by PopBeavers View Post
In a GM truck when you engage tow haul mode it will also boost the voltage on the charge wire back to whatever you are towing. Don't know if a GM cab and chassis would be the same. Don't know about other brands.

You can always increase the charge voltage on any vehicle by turning on your headlights.

I generally will keep it off if I am running at highway speeds on relatively flat roads. If I am in the hills, doing a lot of start and stop, or it starts hunting for the gears then I turn it on.
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Old 07-06-2015, 11:32 AM   #7
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I generally will keep it off if I am running at highway speeds on relatively flat roads. If I am in the hills, doing a lot of start and stop, or it starts hunting for the gears then I turn it on.
Out of curiosity, what is the advantage of turning it off. Does it save fuel or ride better or something else?

If I turned it off on a flat road I might not remember to run it back on when I hit a hill.

Also, when tow haul mode is engaged the transmission will automatically downshift when I use the brakes going down a hill. It does this very smoothly.

Unless I am traveling north or south in the central valley, I will not be on a flat road for more than an hour. But you apparently have long flat roads where you live.
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Old 07-06-2015, 11:35 AM   #8
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Turning it off gets you a little better fuel economy but it's not really a big difference.
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Old 07-06-2015, 11:52 AM   #9
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I do better with my foot and the tach. My husband loves it! So, to each his own.
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Old 07-06-2015, 01:49 PM   #10
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You can turn it on and off as needed, if you get into a hilly area it would be wise to turn it on. One of the Tow Haul functions is to increase the amount of transmission fluid flowing through the transmission cooler keeping your transmission cooler. Yes you can make the engine work the transmission similar to the Tow Haul and on the long flat it would work but in hills your transmission gets a workout and the increase flow of transmission fluid will save on repairs.
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