Had Enough of CMBS (Collision Mitigation Braking System)

Landshark said:
How did you manage to come by a Clarity that has neck snapping acceleration?

ACC is the only feature I use, other than auto headlights. Only on the open road on the closest or second closest following setting, in Econ. The only complaint is, it is a bit slow to close the gap. It is a Clarity, and mine came without neck snapping acceleration.
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Deceleration. He's complaining about the regen coming on too hard. It is confusing to me because as soon as you set cruise regen is shut off. The car will not allow both to be used.

And the slowness to close the gap is why I use Sport. It makes quite a difference.
 
David Towle said:
It works better in regular cruise or when no other cars around but worse in ACC. If a car pulls in front of you in ACC it slams on the regen that much faster, or if someone gets out of the way it floors the throttle. Not how I like to drive.

What I have found to be the best solution, when I want to bother with it, is to use ACC in Economy mode, that way it doesn't react to cars around me too severely. Then when I see a hill coming up I advance the speed by 1 or 2 mph so the speed doesn't fall behind, then go back to the desired cruise speed when partway up the hill.
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Weird. I have not experienced the flooring of the throttle. The regen can be a bit harsh, but again "slam" is not my experience.

I wonder if there is a setting somewhere to flatten the response some.
 
Landshark said:
How did you manage to come by a Clarity that has neck snapping acceleration?

ACC is the only feature I use, other than auto headlights. Only on the open road on the closest or second closest following setting, in Econ. The only complaint is, it is a bit slow to close the gap. It is a Clarity, and mine came without neck snapping acceleration.
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All right I exaggerated a bit.:) But it does go up to 70 or 80% on the power gauge.
 
Tek_Freek said:
Weird. I have not experienced the flooring of the throttle. The regen can be a bit harsh, but again "slam" is not my experience.

I wonder if there is a setting somewhere to flatten the response some.
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The responses are flattened the maximum amount by using the Eco setting. The car definitely uses regen whenever a downhill brings it to more than 2 mph over the set speed, or when a car pulls in front of you. You may assume its braking but look at the power gauge next time someone pulls in front of you it dips fast and deep into regen. Even though there are no chevrons.
 
David Towle said:
You may assume its braking but look at the power gauge next time someone pulls in front of you it dips fast and deep into regen. Even though there are no chevrons.
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In my experience the POWER/CHARGE Gauge dips deeper into regen when I press the brake pedal than when I pull the paddle 3 times to select 4 chevrons.
 
David Towle said:
The responses are flattened the maximum amount by using the Eco setting. The car definitely uses regen whenever a downhill brings it to more than 2 mph over the set speed, or when a car pulls in front of you. You may assume its braking but look at the power gauge next time someone pulls in front of you it dips fast and deep into regen. Even though there are no chevrons.
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I have never used Eco setting and probably never will.
 
The paddles/chevrons are not capable of providing maximum regenerative braking force. The brake pedal is capable of providing maximum regenerative braking force.

To be clear, the paddles and brake pedal only send signals. The paddles send signals that call for, what I believe are, set levels of regenerative braking only. The brake pedal sends signals that call for a combination of regenerative and friction braking.

While I haven’t scrutinized the fluctuations of the green needle as thoroughly as others, I would suggest that regenerative braking force with 4 chevrons selected, could be greater than the regenerative force created from a very light brake pedal application.
 
Hi, newbie of the Clarity here. Quick question, how do you know the "cmbs" is on? The default setting has it on, right? But how to double-check to make sure?
 
David Towle said:
Actually I find the ACC to be the worst of the systems, but its easy to turn off. I can't stand the neck snapping changes from full throttle to full regen all in the space of a few seconds. Its also hard on the car and not fuel efficient. My previous car, a BMW 3 series could hold a steady speed within 1 mph no problem, why does this have to be so antiquated to drop off by 4 mph then have to go to full throttle to try and catch up? (Even on standard cruise). Simply awful. And as I said previously everything else about the Clarity is so good!
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I've not had the car quite a year yet - that happens in 12 days - and have only 12K miles on it but have NEVER experienced a "neck snapping" change - ACC uses radar to maintain speed and distance from whatever vehicle you're following and only slows below the set speed when that vehicle slows down. When running on a clear road mine has no difficulty maintaining the set speed, never dropping more than 1 mph when climbing a rise. ACC is designed to be much MORE efficient than standard CC because it's easy on the throttle - unless you've got the follow distance set at the minimum, in which case the Clarity won't react to a vehicle ahead until it's quite close.
 
Kerbe said:
I've not had the car quite a year yet - that happens in 12 days - and have only 12K miles on it but have NEVER experienced a "neck snapping" change - ACC uses radar to maintain speed and distance from whatever vehicle you're following and only slows below the set speed when that vehicle slows down. When running on a clear road mine has no difficulty maintaining the set speed, never dropping more than 1 mph when climbing a rise. ACC is designed to be much MORE efficient than standard CC because it's easy on the throttle - unless you've got the follow distance set at the minimum, in which case the Clarity won't react to a vehicle ahead until it's quite close.
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I've had the car 34000 miles and have wrestled with this from the beginning. Others like you say they don't have this problem, my guess is that you and others don't have much in the way of hills. And maybe you don't have much in the way of cars pulling in 2 or 3 car lengths ahead of you. I'm moving to Florida this winter so I'll get rid of the hill problem then but I think the problem of cars pulling in front will be worse there, we'll see. And the ACC is not the big deal that the CMBS is, just turn it off, on the highway the car does pretty nice one pedal driving in Sport with maximum regen and no cruise. I can drive way smoother than the ACC.
 
Followed a car from 55mph to a 20mph roundabout and through it on ACC today. I won't lie. I had my foot over the brake pedal just in case, but didn't need it. The car handled it beautifully.
 
As flexi
David Towle said:
The automatic braking system on this car is driving me nuts lately. Where I used to live it was only occasionally an issue, now with much more crowded and curvy 2 lane roads the stupid BRAKE warning is coming on half a dozen times per day and shaking the steering wheel. It scares my wife so she won't drive the car anymore. Yes I know it can be turned off but its yet another item I have to turn off every time I get in the car and that's as bad as putting up with the bogus warnings. It was realigned before I moved after a windshield replacement, but that had no effect on the occasional false alarms I was having then, and I don't believe its a factor now.

I just wish they wouldn't install all this Honda sensing crap before its ready for the real world. None of it works the way it should, including the automatic cruise control and the lane departure system (its off in the other direction, it only recognizes about half of lane departures so it doesn't actually interfere with driving). Its the only major fault of the car.
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i turned off adaptive cruise control for same reason. Got tired of it braking 100 plus feet from other vehicles.
 
Tek_Freek said:
Followed a car from 55mph to a 20mph roundabout and through it on ACC today. I won't lie. I had my foot over the brake pedal just in case, but didn't need it. The car handled it beautifully.
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Don't worry I believe you! In fact my car will do that fine too in Sport. The ACC problem is some situations like this you need to be in Sport for best reactions, and others you need to be in Eco (like cars pulling in front of you) otherwise it regen/brakes too suddenly and unnecessarily. But since its easy to turn ACC on and off and modify set speeds as appropriate that's what I do when my throttle foot needs a break.
 
David Towle said:
I've had the car 34000 miles and have wrestled with this from the beginning. Others like you say they don't have this problem, my guess is that you and others don't have much in the way of hills. And maybe you don't have much in the way of cars pulling in 2 or 3 car lengths ahead of you. I'm moving to Florida this winter so I'll get rid of the hill problem then but I think the problem of cars pulling in front will be worse there, we'll see. And the ACC is not the big deal that the CMBS is, just turn it off, on the highway the car does pretty nice one pedal driving in Sport with maximum regen and no cruise. I can drive way smoother than the ACC.
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You do realize that you can set the sensitivity of the "car length" response, don't you?
 
Like others here I think this is one of those, it depends on conditions. I happen to live in a place where CMBS is reliable, and the adaptive cruise control works well. I've driven on long trips and had each the experiences described. The curvy country road where it "miss fires" either with an alarming steering wheel vibration and "BRAKE" displayed and I've driven through Phoenix where the highway traffic is hell (and I don't even bother with adaptive cruise control).

I live on a really steep hill and my EV range (estimated) is always low relative to others. Anyway, I still totally love the car. I do wish Honda had permitted many (maybe all) modes to remember their setting. To me it would be great to get in the car and just have ALL of the settings stay the same (of course maybe not the seat position if you have Touring). But yeah, the one for me is I sometimes want to select HV and leave it there. Too easy to forget to press the button...

And oddly, one I don't typically care about (the econ mode) does stay "sticky" if you set it, or unset it. For me, the *one* would be HV or no-HV, but as mentioned it would be great if one could turn off CMBS and leave it.
 
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