Then there was four- digits of torque.

[DHayden]

I cant believe there is still NO new information on a new transmission. Only the old ZF and AISIN articles and videos from 2018. If anyone has seen new info please post a link, I have searched high and low.

 

[Ozymandias]

I don't care much for ACC, too many bad drivers pass, and come over too soon, causing mine to brake, even though they are going faster than me. In my 17 5500, I would keep my speed and move my foot over to the brake in case the idiot passes and then brakes. The same with the 1500 on reg CC. ACC is a great option if folks didnt practically cut you off passing.

I know CAS works great in reverse, backing in my wife's 2019 Ram 1500, it locks brakes about a foot from bollard backing in. Haven't tried it forward as I always back into parking spots.

Cheers, Ron

Weird, my Durangos ACC only brakes or slows down if the vehicle that comes into my lane is same speed or slower then mine. As long as it is faster my ACC doesn't care an maintain speed even if the other, sorry idiot, comes in just 20' in front of me.

*maybe they changed Programming in the past, @sag2 could possibly tell us more about it.

**did you check with AlfaOBD if there are adjustable parameters to the ACC??

 

[TFucili]

Given the GCWR potential, I can see where the parameters could be vastly different than a car, or SUV.

 

[Wiredawg]

Weird, my Durangos ACC only brakes or slows down if the vehicle that comes into my lane is same speed or slower then mine. As long as it is faster my ACC doesn't care an maintain speed even if the other, sorry idiot, comes in just 20' in front of me.

*maybe they changed Programming in the past, @sag2 could possibly tell us more about it.

**did you check with AlfaOBD if there are adjustable parameters to the ACC??

ACC distance is adjustable, but I think if you messed with the parameters, you might hit something.... I think it works fine as designed, just idiot drivers not passing correctly negate its usefulness for me. Also, I like lots of following distance, so shortening the distance creates another problem for me.

I'm ok not using it much though.

Cheers, Ron

 

[RVTRKN]

Just went on a road trip with the wifes Highlander that has ACC. It reminded me to seek a solution to turn it off permanently.

 

[HPSimpson]

TFucili Yes! I was towing single axle boat trailer about 3800 lbs, down 4% grade, no exhaust brakes, ACC on speed set at 55mph speed move up to 57mph the first application of brakes came on gentle, this continue for four more applications, then ACC commanded to shift from 6th gear 5th gear. After the down shift the application of brakes was less I only counted three more on the 7 miles of down grade, as arriving near the bottom, ACC commanded to shift 5th back to 6th gear.

 

[TFucili]

Thanks, HP. I don't think I am ready to surrender the brake pedal to the wizard. Is there any indication on the dash when it is dabbing the brakes? Can you choose regular cruise without ACC, if desired?

 

[gsbrockman]

I don't think I am ready to surrender the brake pedal to the wizard.

Best quote EVER......

 

[Wiredawg]

Thanks, HP. I don't think I am ready to surrender the brake pedal to the wizard. Is there any indication on the dash when it is dabbing the brakes? Can you choose regular cruise without ACC, if desired?

Yep, you can use regular CC or ACC, they are separate controls on my wife's truck.

Cheers, Ron

 

[HPSimpson]

TFucili Yes there are two different systems regular cruise control and ACC.

 

[Wiredawg]

I was just checking local dealership where a 2019 Limited 5500 had ACC with stop listed. I interpret from that and from what Stewart Brandt Carter reported in his thread that he used ACC in heavy traffic towing, and although I don't think he mentioned it coming to a complete stop, it appears that it does.

I'm a techy guy, but still not sure I could use ACC in traffic. I seem to recall 60 minutes or similar reporting MOST traffic jams could be reduced or eliminated if EVERYONE used ACC because of the dominoe effect of delayed/ overreacting braking creates traffic delays.

Anyhoo, next time I'm driving my wife's truck may play with ACC some more, but from my experience, doesn't work for me.

Cheers, Ron

 

[RVTRKN]

As I posted earlier, get behind someone that slowly slows down, especially on grades that will kill your momentum. I followed a driver from the safe distance the ACC gives until I realized they slowed down. I looked at my speed and realized they had slowed down 10 mph less than when I started following them.

 

[HPSimpson]

When in traffic you looking down the road and you look at your dash that slow moving truck in front you're down to 35mph, truck makes the exit lane and ACC drops to 5th gear and off you go. I set ACC at two bars when driving in those conditions, works real well.

 

[Jim W]

OK I have a question on the new 2019 or a 2020 trucks.
I have been following a thread on another RV forum about the new trucks with ACC and the exhaust brake on the engine! Per the posters they are claiming that when the exhaust brake is engaged and you have it set to Auto (I believe) this allows the truck to maintain the set speed descending down a slop with a load. The service brakes are engaged by the ECM + the engine exhaust brake to slow the truck and trailer down.
I fine this hard to believe that the Turbo exhaust brake would be tied into the service brakes on a truck! Could someone who has the latest truck please confirm if this is true, that the service brakes are applied or not when the following modes are set. One the exhaust brake is set to Automatic smart, tow/haul mode and the ACC if equipped is on? Thanks

 

[AH64ID]

OK I have a question on the new 2019 or a 2020 trucks.
I have been following a thread on another RV forum about the new trucks with ACC and the exhaust brake on the engine! Per the posters they are claiming that when the exhaust brake is engaged and you have it set to Auto (I believe) this allows the truck to maintain the set speed descending down a slop with a load. The service brakes are engaged by the ECM + the engine exhaust brake to slow the truck and trailer down.
I fine this hard to believe that the Turbo exhaust brake would be tied into the service brakes on a truck! Could someone who has the latest truck please confirm if this is true, that the service brakes are applied or not when the following modes are set. One the exhaust brake is set to Automatic smart, tow/haul mode and the ACC if equipped is on? Thanks

I don't think the EB and service brakes are tied together, rather the ACC can apply the service brakes as required to maintain speed. The EB will still work independently.

What I don't know is the speed delta programming for that. My '18 will allow the speed to increase 5 mph above the CC set speed before engaging the EB.. I actually really dislike that, my 05 would engage the EB as soon as I was 1 mph above CC set speed.

 

[Wiredawg]

I don't think the EB and service brakes are tied together, rather the ACC can apply the service brakes as required to maintain speed. The EB will still work independently.

What I don't know is the speed delta programming for that. My '18 will allow the speed to increase 5 mph above the CC set speed before engaging the EB.. I actually really dislike that, my 05 would engage the EB as soon as I was 1 mph above CC set speed.

I believe that smart EB set to auto that supposed to maintain speed provides a little more variance allowance for speed and the full setting is more restrictive on speed. I pretty much prefer full EB setting all the time.

Of course, this is my observation, and honestly, I haven't run auto setting on my EB.

I'm interested in hearing more on this topic.

Cheers, Ron

 

[AH64ID]

I believe that smart EB set to auto that supposed to maintain speed provides a little more variance allowance for speed and the full setting is more restrictive on speed. I pretty much prefer full EB setting all the time.

Of course, this is my observation, and honestly, I haven't run auto setting on my EB.

I'm interested in hearing more on this topic.

Cheers, Ron

I use auto quite often and really like what it offers.

In auto mode the EB won't engage when you take your foot off the throttle so you can coast, but if your speed goes up above the speed where you took your foot off it will engage the EB or it will engage when you use the service brake. The only exception is in CC, it waits for a ~5 mph increase which is the same as full.

Auto is great for winding mountain roads where coasting is common and you don't want the EB to engage instantly.

 

[Cummins12V98]

FULL EB with cruise control works well, a little up or down on speed setting works wonders.