FCA too aggressive?

[victor_2019]

I was definitely on the brakes, just not hard enough or fast enough to satisfy the car. I don't believe the follow distance setting has anything to do with emergency breaking. I think it's just for the automated cruise control.

there's a setting in the menu for the emergency braking reaction with choices between "early", "normal" and "late"

I had initially set mine to "early" but I think I put it back to default "normal" setting because it was too sensitive. I thought this was affecting warning only but it may also affect braking.

 

[R P]

I set mine to Late, and it still does it to me. It is very scary when it happens at higher speeds, as it did to me when I was about to change lanes. It could have caused an accident if the person behind me was closer. No one expects the car you are following to suddenly jam on the brakes that way.

 

[electriceddy]

I set mine to Late, and it still does it to me. It is very scary when it happens at higher speeds, as it did to me when I was about to change lanes. It could have caused an accident if the person behind me was closer. No one expects the car you are following to suddenly jam on the brakes that way.

Has anyone reported this to Hyundai or the dealers?

 

[Wildeyed]

What's to report? It does what it was designed to do. It just does it in a disconcerting way. If we were more alert and "safer" it wouldn't do any of it - and we wouldn't need it, come to think of it!

 

[R P]

What's to report? It does what it was designed to do. It just does it in a disconcerting way. If we were more alert and "safer" it wouldn't do any of it - and we wouldn't need it, come to think of it!

With all due respect, I totally disagree with that statement. Please reread my first post. As I say, I am NOT an aggressive driver, maybe a more precise driver would be a more accurate. IE, I may come closer to the edge of the "safe" envelope, but I do not overstep it. And my driving record speaks for itself. Also, my other car with its driver assist and FCA systems does not do this.

So at the least, I think the Hyundai FCA needs more refinement to be more precise and not so premature with its severe braking. When I say precise, I suspect it is not as sophisticated as some others to anticipate an impending collision, and compensates by braking early.

 

[electriceddy]

What's to report? It does what it was designed to do. It just does it in a disconcerting way. If we were more alert and "safer" it wouldn't do any of it - and we wouldn't need it, come to think of it!

Looks like Hyundai has there butt covered on this one, so taking it in for other than system failure may not help.
Note the second paragraph down under the "warning" header
(in certain instances and under certain driving conditions, the FCA system may activate unintentionally )
https://www.hkona.com/system_malfunction-371.html
The "unintentional activation" may be a hazard to other drivers as mentioned in above posts and I for one would prefer it not to be the cause of any injuries or accidents .
I will talk with the techs next time I am at the dealers and see if any complaints have been brought to their attention concerning this on any of their vehicles.

 

[victor_2019]

What's to report? It does what it was designed to do.

that's bullshit.

when the car in front of you is multiple car lengths away and you lightly press on the brakes to start slowing down the car, absolutely nothing justifies slamming on the brakes, and especially nothing justifies slamming the brakes only for a fraction of a second just to release them immediately after.

in winter conditions this sudden wheel locking could very likely cause a loss of control

 

[Wildeyed]

that's bullshit.

when the car in front of you is multiple car lengths away and you lightly press on the brakes to start slowing down the car, absolutely nothing justifies slamming on the brakes, and especially nothing justifies slamming the brakes only for a fraction of a second just to release them immediately after.

in winter conditions this sudden wheel locking could very likely cause a loss of control

Apparently you're describing your particular experience, not mine.

 

[drivingbythesun]

I have mine set for early and I've only had it beep at me a few times, never auto-brake. As a matter of fact, one time I thought it should have reacted it didn't, but luckily I was able to quickly switch lanes when someone stopped unexpectedly and quickly in front of me. And it definitely didn't work when there was a deer in front of me but the manual does say that it only works for vehicles.

 

[ehatch]

Am I the only one that has trouble with this thing? It has surprised me a few times when coming to a stop behind a car, by slamming on the brakes when I was nowhere near to hitting the car in front. But a few days ago it did it in traffic when I was about to change lanes. I was coming up behind someone, and just as I was looking over my shoulder to change lanes, it slammed on the brakes. It not only freaked me out, but the cars behind me must have wondered what the h*** I was doing.

I have the settings to be Late, to try and mitigate this response, but it doesn't seem to make any difference. On my other car (Subaru), this has never happened to me. It will very occasionally beep and slow me (when it should legitimately), but not slam on the brakes. And I know that FCA works very well, as demonstrated in many youtubes with cardboard boxes. It always stops.

So, is there something wrong with my car, or this just how it works on a Hyundai? Why does it slam on the brakes so suddenly? If necessary, it could first brake gently, as required. And like I said, have never even been close to rear ending anyone.

And I am sure many of you are thinking, I should just drive more carefully. I am not a poker, but also do not consider myself an aggressive driver either. I am actually a very defensive driver (used to ride motorcycle where you die if you are not), and have not been in an accident since I was a kid. Haven't even had a traffic ticket for at least 15 years or so.

How do people that live in New York or Chicago get along with this FCA? I have driven there, and they are very aggressive with speeding, tailgating, lane changing etc. You could never do that with my Kona. And I don't want to shut it off, because one day, it may indeed save my bacon, so I like having that safety feature. But it is starting to scare me, and I refuse to drive like my grandmother either. I like my Kona, but this one aspect am really starting to hate.

So is no one else here on this list experiencing this?

I thought I was the only one who thought the AEB in conjunction with the ACC was a little too aggressive. A full sized SUV behind me on the highway had to take the shoulder because I stopped so suddenly. NOT complaining because I like having the AEB work,but I also wished it wouldn't be so extreme sometimes. I am in a large urban center,and I will turn the ACC off sometimes because of the braking since it can also be later than I would like. Too many people cutting into my lane doesn't help.

 

[CJC]

I thought I was the only one who thought the AEB in conjunction with the ACC was a little too aggressive. A full sized SUV behind me on the highway had to take the shoulder because I stopped so suddenly. NOT complaining because I like having the AEB work,but I also wished it wouldn't be so extreme sometimes. I am in a large urban center,and I will turn the ACC off sometimes because of the braking since it can also be later than I would like. Too many people cutting into my lane doesn't help.

I think that engineers must have a terrible time calculating the sweet spot distance to be left between cars before it engages. My generation would call today's style "tail gaiting" as it is the trend not to leave adequate stopping distance and cut into those spots that should be left for safe stops. But I would estimate about 75% of the population is doing that cutting in and taking the "safe spot". I have read many discussions on forums about this and their is a strong defense for doing the tail gaiting with many comments being made that those drivers are more alert with more adrenaline from aggressive driving. I've thought many times about us non aggressive having to be a step ahead and have our foot lightly depress the brake when these idiots swoop in front and take the "safe spot".

 

[victor_2019]

I have mine set for early and I've only had it beep at me a few times, never auto-brake.

what we are describing is not the auto brake though.

my car didn't brake on its own. I initiated the braking. The problem is that I pressed the brake very lightly and the car "assisted" quite aggressively at that moment and locked the wheels.

there are multiple systems in the car. the auto brake will brake on its own without driver intervention. then there's the emergency brake assist which brakes harder in event of an emergency, but the driver initiates the braking.

I've never had the brakes engage on their own in the car either.

 

[ehatch]

what we are describing is not the auto brake though.

my car didn't brake on its own. I initiated the braking. The problem is that I pressed the brake very lightly and the car "assisted" quite aggressively at that moment and locked the wheels.

there are multiple systems in the car. the auto brake will brake on its own without driver intervention. then there's the emergency brake assist which brakes harder in event of an emergency, but the driver initiates the braking.

I've never had the brakes engage on their own in the car either.

in @drivingbythesun's case, it appears the AEB "assisted" by kicking in unexpectedly despite driver intervention due to the "locked wheels" remark.I have experienced similar while using ACC,combined with the flashing FCA alert because the Kona approached the vehicle ahead too quickly. This is beyond the stop,and go distance maintenance,and stopping of ACC. Hence calling what happened AEB.@drivingbythesun only "pressed the brake very lightly."We don't know the speed,but this action would only slow the Kona down, in conjunction with regen.,not stop it in higher speed conditions. What some of us who have experienced the AEB combined ACC function may want to see is a smoother transition based on speed/distance to another vehicle when there's no imminent collision from sudden traffic stopping ahead. Hyundai should be able to tweak their algorithm to improve the ACC function.Stronger regen. at the highest setting would also be a welcomed update for me.

 

[R P]

I think the Kona FCA (and related systems) are just not that precise, so it brakes prematurely to compensate. My other car (Subaru) works perfectly and never brakes prematurely, yet never fails when actually needed. I can drive very aggressively with it, and the ACC in heavy stop and go traffic can be set so that very rarely can a car squeeze in front of you. That is far from the case with my Kona. I think the difference is dual stereoscopic cameras vs just a single camera and radar for the Kona. Plus Subaru has been perfecting their system (EyeSight) for many years, and it is far more mature.

I don't think there is much that we can expect (as far as fixes) with our current Kona's, so will just have to adapt. Probably future cars from Hyundai will work better.