2022 5.7 ETorque Tow/Haul Mode defect

[Bt10]

...provides additional torque under load up to 2000rpm where engine torque is low...

Interesting, hadn't heard that before. Thanks.

 

[Camel_City]

Mine has done it since day one. Only happens when I'm driving through town at a lower speed and usually when decelerating. Shut the truck down and re-start, limp mode goes away. Reset the CEL when I get home. At this point the techs are telling me not to use the T/H mode until a fix is figured out.

It's a damn shame for what these trucks cost ...

 

[SnowBlaZR2]

I've been turning tow/haul on and auto start/stop off. Haven't had the issue in over 1k miles of towing like this. The truck doesn't shut off when I'm towing anyway. Still annoying that I have to press the right buttons to use my truck.

 

[igo-wfo]

Mine has done it since day one. Only happens when I'm driving through town at a lower speed and usually when decelerating. Shut the truck down and re-start, limp mode goes away. Reset the CEL when I get home. At this point the techs are telling me not to use the T/H mode until a fix is figured out.

It's a damn shame for what these trucks cost ...

Newb to the board here

I totally agree.
Same scenario happened to me last week, decel with 16 ft empty utility trailer and it wigs out.
Mine actually stopped running and it took 4 tries to get it to re start.

the CEL did shut off after 4-5 drive cycles and it did store the U0402 code.

I found the other thread that has the TSB ( 08-093-22 ) relating to this issue and I took ours to dealer yesterday and they did the software flash.
The next time I hook the trailer I will test to see if that fixed it.

 

[Camel_City]

Newb to the board here

I totally agree.
Same scenario happened to me last week, decel with 16 ft empty utility trailer and it wigs out.
Mine actually stopped running and it took 4 tries to get it to re start.

the CEL did shut off after 4-5 drive cycles and it did store the U0402 code.

I found the other thread that has the TSB ( 08-093-22 ) relating to this issue and I took ours to dealer yesterday and they did the software flash.
The next time I hook the trailer I will test to see if that fixed it.

Mines currently back in the shop again for the flash/patch and I'll pick it up after work. Keeping my fingers crossed ...

 

[HSKR R/T]

Really ,if you are towing under 3k lb trailer, probably don't even need to use tow-haul mode. On these trucks with the 8-speed trans all it does is hold gears a little longer when accelerating, and down shifts for engine braking. On older trucks it locked out OD to help extend life of transmission.

Not saying it shouldn't be fixed, which sounds like they have a fix for it, but tow/haul isn't something you need to use every time you tow a trailer. I don't even use it on my truck when hauling my ATVs.

 

[Camel_City]

Really ,if you are towing under 3k lb trailer, probably don't even need to use tow-haul mode. On these trucks with the 8-speed trans all it does is hold gears a little longer when accelerating, and down shifts for engine braking. On older trucks it locked out OD to help extend life of transmission.

Not saying it shouldn't be fixed, which sounds like they have a fix for it, but tow/haul isn't something you need to use every time you tow a trailer. I don't even use it on my truck when hauling my ATVs.

I pull a 7500 lb TT, but even if I'm not towing, I like to put it in T/H mode when I'm driving in the mountains.

 

[IvoryHemi]

According to RAM, the E-torque is activated for the AUTO-START feature rather than engine starter having to start engine ,then move vehicle. and assists transition into MDS ECO mode [ 4 cylinder] and provides additional torque under load up to 2000rpm where engine torque is low .

It’s only able to move the truck one-half of a single tire rotation.

Engine torque overruns the BSG output long before 2,000 rpm, it does nothing under heavy loads.

 

[SpeedyV]

It’s only able to move the truck one-half of a single tire rotation.

Engine torque overruns the BSG output long before 2,000 rpm, it does nothing under heavy loads.

I wouldn't go so far as to say "it does nothing"...eTorque is still being used to help smooth out shifts, even while towing. And regenerative braking can be a bonus.

As for acceleration with heavy loads, I agree—eTorque doesn't do anything there.

 

[KWKSLVR]

This ^^^^^^

 

[Bt10]

It’s only able to move the truck one-half of a single tire rotation.

Engine torque overruns the BSG output long before 2,000 rpm, it does nothing under heavy loads.

Correct. This is in all the FCA literature. And shifting below.

I wouldn't go so far as to say "it does nothing"...eTorque is still being used to help smooth out shifts, even while towing. And regenerative braking can be a bonus.

As for acceleration with heavy loads, I agree—eTorque doesn't do anything there.

Well, I wouldn't say regen is a BONUS, unless you count 2% slower pad wear, but it's subjective. I personally hate the uneven brake force, and so does every passenger I know.

 

[Pokey69]

I pull a 7500 lb TT, but even if I'm not towing, I like to put it in T/H mode when I'm driving in the mountains.

Any update yet?

 

[Idahoktm]

I wouldn't go so far as to say "it does nothing"...eTorque is still being used to help smooth out shifts, even while towing. And regenerative braking can be a bonus.

As for acceleration with heavy loads, I agree—eTorque doesn't do anything there.

The smoothing out shifts part of eTorque is something that gets regurgitated over and over, because it's printed in a Ram brochure. It's really not worth mentioning. The regenerative braking is definitely noticable and I suppose it could be beneficial.

 

[SpeedyV]

The smoothing out shifts part of eTorque is something that gets regurgitated over and over, because it's printed in a Ram brochure. It's really not worth mentioning. The regenerative braking is definitely noticable and I suppose it could be beneficial.

Do you have eTorque? You haven’t listed it in your sig.

You can find real-world towing reviews that make mention of eTorque smoothing out shifts (Google it).

I can also concur from my own experience with it over the past 3.5 years, even if I don’t tow frequently.

 

[SnowBlaZR2]

Do you have eTorque? You haven’t listed it in your sig.

You can find real-world towing reviews that make mention of eTorque smoothing out shifts (Google it).

I can also concur from my own experience with it over the past 3.5 years, even if I don’t tow frequently.

I have a bit over 7k miles on my truck and close to 6k of those have been while towing the camper. I haven't towed with a Ram that doesn't have the eTorque system, but I'll say that compared to my GMC it makes a difference, especially in the mountains.

The regenerative braking might be my favorite feature of the system, if for no other reason than making my wheels very easy to clean.

 

[Idahoktm]

Do you have eTorque? You haven’t listed it in your sig.

You can find real-world towing reviews that make mention of eTorque smoothing out shifts (Google it).

I can also concur from my own experience with it over the past 3.5 years, even if I don’t tow frequently.

I drove an eTorque and a non eTorque truck back-to-back and I've ridden in a non eTorque truck after owning mine for a few months. There's no perceptible difference.

 

[SpeedyV]

I drove an eTorque and a non eTorque truck back-to-back and I've ridden in a non eTorque truck after owning mine for a few months. There's no perceptible difference.

So…no, then.

 

[Idahoktm]

So…no, then.

Yep, no difference at all. Based on your statement, I'll assume you currently own both an eTorque and a non-eTorque truck and that's how you came to your conclusion.

 

[SpeedyV]

Yep, no difference at all. Based on your statement, I'll assume you currently own both an eTorque and a non-eTorque truck and that's how you came to your conclusion.

No, I know better than to claim absolute knowledge based on the few back-to-back test drives I took before ordering with eTorque.

I only have the thousands of towing miles I’ve put on previous trucks and thousands of towing miles I’ve put on this truck for comparison. Not apples-to-apples, of course.

So I will again mention that you can find towing reviews online that acknowledge the difference.

 

[Idahoktm]

No, I know better than to claim absolute knowledge based on the few back-to-back test drives I took before ordering with eTorque.

I only have the thousands of towing miles I’ve put on previous trucks and thousands of towing miles I’ve put on this truck for comparison. Not apples-to-apples, of course.

So I will again mention that you can find towing reviews online that acknowledge the difference.

As obvious as you're making the differences sound, I would think you would have noticed it on your back-to-back tests. I suppose the difference might be insignificant after all.

Now it makes sense. You are using an older generation Ram or different brand of truck as a comparison to your 5th Gen eTorque truck.

I never said a word about towing. Are you now saying that it only smooths out shifts while towing? If that's the case, I have no experience with eTorque while towing, so I'm not going to offer an opinion.