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Old 01-31-2014, 11:46 AM   #1
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Ram Tow/Haul Mode

Does anyone know what in the world the Tow/Haul mode does in the Ram? I know that it deactivates the 4banger function but the proper way to do that is to use the shifter to select a highest gear. Is this just sending the stability control a heads up to expect something different or is more going on in there? Thanks a lot.
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Old 01-31-2014, 11:52 AM   #2
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Not sure what you Ram does but on my F250, I noticed the shift behavor changes and the truck responds differently to gas pedal position and angle of incline/decline.

. e.g. Torque converter lockup for deceleration. Delayed upshifts to allow the motor to rev up into its torque range. Downshifts happen more firmly with less gas pedal pressure. When going downhill, it is watching brake pedal pressure and downshifts much more aggressively to maximize engine braking.

I might add that it seems to act this way if something plugged into the 7-pin trailer connector and is in tow/haul mode.
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Old 01-31-2014, 11:54 AM   #3
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I would expect it to change the shifting characteristics (rpm at which it shifts, downshifting for descents) in addition to torque converter lock up and highest gear. It will likely depend on which model year and transmission you have.
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Old 01-31-2014, 12:07 PM   #4
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What year Ram? Jim
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Old 01-31-2014, 12:20 PM   #5
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2012 1500 LL 4x4 w/3.92 towing a heavy 31'.
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Old 01-31-2014, 12:33 PM   #6
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Ram says the following in the manual:
When operating in TOW/HAUL mode, transmission upshifts are delayed, and the trans- mission will automatically downshift (for engine braking) when the throttle is closed and/or during steady braking maneuvers.
There's another section about "Hill Start Assist" that helps compensate for the extra weight of a trailer when tow/haul is selected. It seems to also say that overdrive is either avoided or locked out entirely in tow/haul, but it's not very specific about that.
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Old 01-31-2014, 12:43 PM   #7
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Quote:
Originally Posted by DKB_SATX View Post
Ram says the following in the manual:
When operating in TOW/HAUL mode, transmission upshifts are delayed, and the trans- mission will automatically downshift (for engine braking) when the throttle is closed and/or during steady braking maneuvers.
There's another section about "Hill Start Assist" that helps compensate for the extra weight of a trailer when tow/haul is selected. It seems to also say that overdrive is either avoided or locked out entirely in tow/haul, but it's not very specific about that.
My Ram is a 2500 Cummins, but that's what it does in tow/haul. Many times I don't use it out on the open road in relatively flat terrain, but I always use it in hilly country, along with the exhaust brake.
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Old 01-31-2014, 12:44 PM   #8
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I had a lengthy reply written and then realized your is gas and mine is diesel.

I think the basic answer is it changes the shift points and makes the shifts more solid.
I doubt that it has anything with the skid control. Mine has a switch to turn skid control off if desired
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Old 01-31-2014, 04:52 PM   #9
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I appreciate the responses. I ask because I purposely left it in tow mode for an entire tank and it didn't affect the mileage. Mainly city driving BTW.
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Old 01-31-2014, 05:35 PM   #10
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I appreciate the responses. I ask because I purposely left it in tow mode for an entire tank and it didn't affect the mileage. Mainly city driving BTW.
I prefer tow haul in the city and on out twisty country roads.
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Old 01-31-2014, 06:03 PM   #11
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We have the 2012 gas hemi engine and 6-spd. Tow/haul keeps it out of overdrive and keeps all eight cylinders on line. If we are towing in hilly country with cruise control, I drop it an additional gear or two as needed to keep the engine from repeated downshifts. Sweet engine/trans towing our 25 with good power, decent on gas in 2100-2400 rpm range.

I don't think tow/haul has anything to do with stability control, does it?
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Old 01-31-2014, 06:50 PM   #12
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I have the 2013 Ram 3500 Mega Cab, and have towed our AS from Colorado to the Carolinas to the Keys. 17K miles in 6 months!

The Tow / Haul mode really makes a difference when pulling as the shifts are much smoother. For example, stomp the gas pedal, and the engine kick does not yank the AS and its contents from an immediate downshift of 3 gears. I always turn this option on when towing. It has not made any noticeable difference with MPG. I still get ~15 mpg at 55 mph on average level ground. Now at 80 mph, I only get 12 mpg
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Old 02-01-2014, 06:10 AM   #13
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Quote:
Originally Posted by Grrrwolf View Post
I appreciate the responses. I ask because I purposely left it in tow mode for an entire tank and it didn't affect the mileage. Mainly city driving BTW.
Switching on Tow/Haul mode does not seem to change much of anything on my truck unless the trailer connector is plugged in.
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Old 03-30-2015, 11:42 AM   #14
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Okay, this is something I should have found out before I started full-timing 11 months ago, but so I have to do something to switch on the Tow/Haul mode aside from pulling in the trailer connector? I am riding my brakes too much out west on these mountains. I've already had one brake job done.
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