What does tow haul do on Ram 2500 CTD

Lots of mis information so far. What transmission? The 68RFE tow haul alters the shift points and holds each gear to a higher RPM to allow stronger accelerarion when pulling.

Thanks Bert,

IdaD wrote:

M.R.E. wrote:
It's a '16.

Changes shift points (up and down) is the most obvious thing. I've read increased line pressure but some have questioned that so I'm not sure on that front. I can tell you tow/haul mode plus in concert with the exhaust brake gives you an incredibly good towing experience.

When I have my exhaust brake in auto and tow haul selected the minute I touch my brakes the truck 'takes over' and starts down-shifting and braking.

A good example is the first time I used them (tow/haul & exhaust brake) together. I was approaching a traffic light and it had turned red so I let off the gas and began to coast. You could hear the exhaust brake engage and it began to gently slow us.

The minute I touched my brakes, the tranny started rev-matching/down-shifting and the exhaust brake became more aggressive in slowing us. It was amazing. By the time I reached the light I barely had to touch the brakes to complete the stop. Aside from the initial touch to begin slowing (I let off once the truck started doing its thing) to the end, I didn't ahve to use the brakes at all.

I used to have an 04 Cummins so this was all new to me.

Great system.

M.R.E. wrote:
It's a '16.

Then it should perform the same as ours. There is a switch on the end of the right hand stalk that allows you to lock out gears as you see fit.

I've never had to use it. The truck has never hunted or bogged at all towing our Arctic Fox.

M.R.E. wrote:
It's a '16.

Changes shift points (up and down) is the most obvious thing. I've read increased line pressure but some have questioned that so I'm not sure on that front. I can tell you tow/haul mode plus in concert with the exhaust brake gives you an incredibly good towing experience.

Bert what do you mean it integrates itself with the exhaust brake (in auto mode) to help stop your rig.

if I am in tow haul with exhaust on auto does it just keep slowing down

Changes shift point to keep from lugging. Also allows for it to downshift through all gears.

.

It's a '16.

Depends on the year.

Tow haul on my 2016 adjusts the shift points and integrates itself with the exhaust brake (in auto mode) to help stop your rig.

Locking out gears is done separately.

My camper is 10,000# loaded and my 3500 will pull it in sixth gear all day long.