ACC/CMS fault

[Rollin101]

I like the ACC on our Ram, not so much on the Mh.

[zman62]

What are the complaints people have with acc?

My coach seems to operate the same as my cars that have it. Must not be that way for everyone I am guessing

[Nowabeachbum]

Originally Posted by zman62

What are the complaints people have with acc?



My coach seems to operate the same as my cars that have it. Must not be that way for everyone I am guessing

In 2018 it had no off button so you either had adaptive cruise or no cruise which was pretty frustrating in certain traffic. In 2019 they added the choice by adding the ability to have standard cruise and really now all is fine. People can choose.


And Harleydeal, Good one!

[Gary.Jones]

Kert

I think it all depends on how you drive. I tend to want to pick a speed which is comfortably under the posted speed limit, lets say 68 based on a 70 or 75 mph speed limit, and then to the extent possible and safe, I want to travel at that speed. That is what Old Fashioned Cruise Control (OFCC) did and does very nicely. Now it is my job as driver to approach cars, pass cars or trucks safely or brake to maintain that 68 mph, if possible.

On my coach, I initially had no ability to turn the ACC off.... only the ability to chose long, medium, or short distance to have the vehicle in front of me in the same lane governing my speed. Now if I again have decided to travel at 68 mph, at some random amount of time, I realize my coach is no longer traveling at 68, but now is traveling at 60 or 55 or some speed other than 68. In the long option, that is a vehicle that is traveling around 700-800' in front of me..... Good grief. 800'???? A car 800' in front of me is probably a vehicle that i wouldn't even be thinking its relevant to my coach unless its standing still. I have never tried to actually measure the distance we are apart and maybe my system was very badly calibrated and it was not 800' but maybe 1600 feet instead.... whatever it was, it was way, way, way too far ahead of me to worry about unless it was standing still. What it was, was so far in front of me that i would not have even felt that it was something i needed to pay attention to, but my speed would now be 55 or 50 and I needed to stomp on the diesel feed and usually move to a different lane, but I am constantly stepping on the diesel feed and accelerating back up to 68. No need to slow as most drivers would simply change lanes a whole lot closer to the slower vehicle and pass in another lane. Now, I should note that I almost always drive interstates.... there are others who love the back-road 2 lane highways..... That is just not "me". So if you drive back roads and approaching a car usually means that you have no choice but to slow down and wait for a safe place to pass, the ACC might make sense. However, if you drive interstates, then you are slaved to whatever vehicle is in the lane X number of feet in front of you!! Again, I drive my coach. I accept responsibility not to ram into someone or drive dangerously. Therefore I dont need a machine helping me make those decisions. I've done that for decades.

Is that what your car ACC does? I'm pretty sure, I'd hate that on a car also, but neither of my cars have ACC on it, and if I get one that does, it will only be if it can be turned completely off. Now that I am retired, I rarely put 6,000 miles on my F150 per year, and my Honda toad doesn't put on that much mileage (unless you consider being dragged behind the coach) so there is a good possibility I may never need another newer car in this lifetime. Its all where you drive and how you drive. JMHO

Gary

[zman62]

Originally Posted by Gary.Jones

Kert

I think it all depends on how you drive. I tend to want to pick a speed which is comfortably under the posted speed limit, lets say 68 based on a 70 or 75 mph speed limit, and then to the extent possible and safe, I want to travel at that speed. That is what Old Fashioned Cruise Control (OFCC) did and does very nicely. Now it is my job as driver to approach cars, pass cars or trucks safely or brake to maintain that 68 mph, if possible.

On my coach, I initially had no ability to turn the ACC off.... only the ability to chose long, medium, or short distance to have the vehicle in front of me in the same lane governing my speed. Now if I again have decided to travel at 68 mph, at some random amount of time, I realize my coach is no longer traveling at 68, but now is traveling at 60 or 55 or some speed other than 68. In the long option, that is a vehicle that is traveling around 700-800' in front of me..... Good grief. 800'???? A car 800' in front of me is probably a vehicle that i wouldn't even be thinking its relevant to my coach unless its standing still. I have never tried to actually measure the distance we are apart and maybe my system was very badly calibrated and it was not 800' but maybe 1600 feet instead.... whatever it was, it was way, way, way too far ahead of me to worry about unless it was standing still. What it was, was so far in front of me that i would not have even felt that it was something i needed to pay attention to, but my speed would now be 55 or 50 and I needed to stomp on the diesel feed and usually move to a different lane, but I am constantly stepping on the diesel feed and accelerating back up to 68. No need to slow as most drivers would simply change lanes a whole lot closer to the slower vehicle and pass in another lane. Now, I should note that I almost always drive interstates.... there are others who love the back-road 2 lane highways..... That is just not "me". So if you drive back roads and approaching a car usually means that you have no choice but to slow down and wait for a safe place to pass, the ACC might make sense. However, if you drive interstates, then you are slaved to whatever vehicle is in the lane X number of feet in front of you!! Again, I drive my coach. I accept responsibility not to ram into someone or drive dangerously. Therefore I dont need a machine helping me make those decisions. I've done that for decades.

Is that what your car ACC does? I'm pretty sure, I'd hate that on a car also, but neither of my cars have ACC on it, and if I get one that does, it will only be if it can be turned completely off. Now that I am retired, I rarely put 6,000 miles on my F150 per year, and my Honda toad doesn't put on that much mileage (unless you consider being dragged behind the coach) so there is a good possibility I may never need another newer car in this lifetime. Its all where you drive and how you drive. JMHO

Gary

You can’t adjust the distance between you and the lead car?

[Gary.Jones]

Long, medium, and short. To begin with, no off was available. After all my complaining, I finally mysteriously found that my coach had a new option on that joy stick, and that was off. This past November, Spartan swore there was no way for a 2019 Cornerstone to turn the ACC off. That capability appeared on my coach about a year or 18 months ago.

I am going to have to take notes the next time I put ACC on but I believe that my short following slave distance was 700-800'. Coach defaults to the longest ACC distance that is available, but I can reduce it to the shorter distance, but that shorter distance is still much longer than it necessary. I've always wondered if something was not calibrated correctly but I had it calibrated several times and they said it was right.... do you know the distance that the vehicle in front of you is regulating your speed? The CMS readout display will give you the exact distance of the vehicle in front of you that you are following.

I turn ACC to the off position as soon as I put the transmission in "D" and it stays that way as long as I'm driving.

Gary

[brobox]

Originally Posted by zman62

You can’t adjust the distance between you and the lead car?

I was starting to think I was the only one. My ACC screen changes from green to amber for additional assistance. But what do I know?

[zman62]

Originally Posted by brobox

I was starting to think I was the only one. My ACC screen changes from green to amber for additional assistance. But what do I know?

Mine does the same. I set it and sit back and relax.

[Rollin101]

I like the concept of the ACC. However on the Mh I get what Gary is saying. Even if you have it on the shortest following distance it’s still back a fur piece. If you have it set on say 68 and you come on someone doing 65 with traffic behind you your Mh has now slowed to 65. You decide to pass so when you pull out it will eventually speed up to 68 without any input from you, but it takes a LONG time to close that distance to pass the vehicle doing 65. Meantime you have pissed off 25 cars behind you.
Now I guess you could set the ACC for 80 and then when you pulled out to pass it would kick your speed up and pass pretty quickly.
The ACC on the Mh is certainly usable, but it’s kinda like driving a Mac truck in the Indy 500.

[Nowabeachbum]

It’s all about choice, use it or not. The short distance is around 350 ft. I use the regular cruise mostly but love ACC on 2 lane roads. It paces traffic, if a car turns, you automatically slow down til the car turns then you are off again, never messing with the gas pedal. It makes traveling on 2 lane roads a little less nerve wracking.

[buddy110]

Originally Posted by Rollin101

I like the concept of the ACC. However on the Mh I get what Gary is saying. Even if you have it on the shortest following distance it’s still back a fur piece. If you have it set on say 68 and you come on someone doing 65 with traffic behind you your Mh has now slowed to 65. You decide to pass so when you pull out it will eventually speed up to 68 without any input from you, but it takes a LONG time to close that distance to pass the vehicle doing 65. Meantime you have pissed off 25 cars behind you.
Now I guess you could set the ACC for 80 and then when you pulled out to pass it would kick your speed up and pass pretty quickly.
The ACC on the Mh is certainly usable, but it’s kinda like driving a Mac truck in the Indy 500.

I find that once I change lanes if I step on the gas it "wakes" the acc up which accelerates up to the desired (set) speed. That said, I still don't like it and will no longer use it. I shut it off and drive old style

[zman62]

Originally Posted by buddy110

I find that once I change lanes if I step on the gas it "wakes" the acc up which accelerates up to the desired (set) speed. That said, I still don't like it and will no longer use it. I shut it off and drive old style

In these scenarios described above, as I see the coach slowing and I plan on passing I just put my foot on the accelerator until I complete the pass then lift foot and let the acc take over.

It all seems effortless at least to me.

[buddy110]

Originally Posted by zman62

In these scenarios described above, as I see the coach slowing and I plan on passing I just put my foot on the accelerator until I complete the pass then lift foot and let the acc take over.

It all seems effortless at least to me.

Yes, that has worked also. However, given the fault that keeps haunting me I am leaving ACC off. So far, knock on wood, two trips with zero faults

[zman62]

Originally Posted by buddy110

Yes, that has worked also. However, given the fault that keeps haunting me I am leaving ACC off. So far, knock on wood, two trips with zero faults

Yeah in your situation I would be doing the same so I could continue our trip.