LFA can only handle gentle curves?

[gyias]

LFA on Telluride is certainly an amazing piece of technology. It's very reliable when it works and always works in a very predictable way. That is, I can almost always predict it in advance before it gives up on some steep curves.

Speaking of which, my only gripe with it is that, it seems to have very limited range of steering angles, and thus can only handle gentle curves. I'm not talking about windy local roads or highway junctions, but about interstate level highway roads. It's not a faint lane marker issue either. The markers were relatively fresh and clearly visible. It's just the radius of the curve that seems to prevent LFA from handling the car by itself.

For the comparison, I drove my friend's Volvo XC90 yesterday, and though their ADAS (I think it's called Pilot Assist) felt clunky and quite unreliable compared to Telluride's, it could definitely navigate through the steeper curves, which my Telly had struggled with, just fine at similar speeds.

Do others feel the same way? Or, is it a problem with my Telly?

 

[raydog9379]

LFA on Telluride is certainly an amazing piece of technology. It's very reliable when it works and always works in a very predictable way. That is, I can almost always predict it in advance before it gives up on some steep curves.

Speaking of which, my only gripe with it is that, it seems to have very limited range of steering angles, and thus can only handle gentle curves. I'm not talking about windy local roads or highway junctions, but about interstate level highway roads. It's not a faint lane marker issue either. The markers were relatively fresh and clearly visible. It's just the radius of the curve that seems to prevent LFA from handling the car by itself.

For the comparison, I drove my friend's Volvo XC90 yesterday, and though their ADAS (I think it's called Pilot Assist) felt clunky and quite unreliable compared to Telluride's, it could definitely navigate through the steeper curves, which my Telly had struggled with, just fine at similar speeds.

Do others feel the same way? Or, is it a problem with my Telly?

Haven't run into it yet. But northern IL is pretty flat and everything is North / South or East / West on the highways outside of on/offramps. I'll find out when on a longer driving trip that has some decent curves to it.

 

[gyias]

Thanks. BTW, I should've said 'sharp' curves, not 'steep'. I'm not talking about hills, but curves on flat roads.

 

[raydog9379]

Thanks. BTW, I should've said 'sharp' curves, not 'steep'. I'm not talking about hills, but curves on flat roads.

There aren't hardly any curves around here, everything is north/south, east/west. Prob. just the design of the Chicago area when they planned it. Exception might be where 290/53/355 breaks off around Itasca.

______________________________

 

[slowginjoe]

LFA on Telluride is certainly an amazing piece of technology. It's very reliable when it works and always works in a very predictable way. That is, I can almost always predict it in advance before it gives up on some steep curves.

Speaking of which, my only gripe with it is that, it seems to have very limited range of steering angles, and thus can only handle gentle curves. I'm not talking about windy local roads or highway junctions, but about interstate level highway roads. It's not a faint lane marker issue either. The markers were relatively fresh and clearly visible. It's just the radius of the curve that seems to prevent LFA from handling the car by itself.

For the comparison, I drove my friend's Volvo XC90 yesterday, and though their ADAS (I think it's called Pilot Assist) felt clunky and quite unreliable compared to Telluride's, it could definitely navigate through the steeper curves, which my Telly had struggled with, just fine at similar speeds.

Do others feel the same way? Or, is it a problem with my Telly?

Curious if you have any updates on what you found regarding LFA’s ability to keep centered around highway curves.

Mine does it perfectly when the highway curves left, but always crosses over the left line when the highway curves to the right.

 

[Tellthemride]

Curious if you have any updates on what you found regarding LFA’s ability to keep centered around highway curves.

Mine does it perfectly when the highway curves left, but always crosses over the left line when the highway curves to the right.

It is possible for LFA to steer both left and right. I find that if the curve is greater than about 25-30 degrees offset from heading straight the LFA will disengage. Usually LDW/LKA will give you a heads up that LFA is losing control, but not always if there are no visible lane markers. I have a 2020.

For 2022 models, this turn radius might be greater since it uses the new NSCC-Curve feature that slows down the car entering curves. But so far no 2022 owners have commented at which point, if any, the LFA will disengage.

 

[slowginjoe]

It is possible for LFA to steer both left and right. I find that if the curve is greater than about 25-30 degrees offset from heading straight the LFA will disengage. Usually LDW/LKA will give you a heads up that LFA is losing control, but not always if there are no visible lane markers. I have a 2020.

For 2022 models, this turn radius might be greater since it uses the new NSCC-Curve feature that slows down the car entering curves. But so far no 2022 owners have commented at which point, if any, the LFA will disengage.

Thanks for the helpful info. I wonder if there’s something wrong with my system, as centering in right curves performs so much worse than left curves. It was supposedly recalibrated bu the dealer and nothing improved. It’s an important feature of the car for me and almost makes me want to get something else at this point.

 

[stanaka1]

Not only is it limited to within certain degrees of steering angle, but it also seems to be limited by how fast you're going. A bend in the freeway can be handled at 70mph but not at higher speeds. I also wish there was a little bell that rings when it disengages instead of the little green steering wheel blinking off. Between fading freeway lines and driving into the sun, I usually have to turn it off and actually drive like some sort of peasant.

______________________________

 

[slowginjoe]

Not only is it limited to within certain degrees of steering angle, but it also seems to be limited by how fast you're going. A bend in the freeway can be handled at 70mph but not at higher speeds. I also wish there was a little bell that rings when it disengages instead of the little green steering wheel blinking off. Between fading freeway lines and driving into the sun, I usually have to turn it off and actually drive like some sort of peasant.

That’s my experience as well. I’m not bothered so much by the system’s limitation as much as the fact that the left is almost perfect and the right is pretty much useless, I’d settle for a compromise between the two as long as they perform the same and predictable. If the right worked as well as the left I’d say it is more useful to me than the autopilot in the Tesla, with less lane hunting/ping ponging and no phantom braking.

 

[stanaka1]

That’s my experience as well. I’m not bothered so much by the system’s limitation as much as the fact that the left is almost perfect and the right is pretty much useless, I’d settle for a compromise between the two as long as they perform the same and predictable. If the right worked as well as the left I’d say it is more useful to me than the autopilot in the Tesla, with less lane hunting/ping ponging and no phantom braking.

have you tried taking it in to get it recalibrated? I don't have that left/right problem.

 

[slowginjoe]

have you tried taking it in to get it recalibrated? I don't have that left/right problem.

Yes, the dealership supposedly recalibrated it on my last oil change but I’m not sure if they actually did it. May try another dealership next time.

 

[Navin_Johnson]

About a month ago, I got back from a couple week trip from Northern Illinois, to SD, to SW CO, and back to IL. I used the LFA as much as I could, just to see how it worked, and what type of limitations there were. Turned out being 2980 miles @ 25.3 mpg. Total time 54 hours seat time.
My wife and I hate eating out, so we pack sandwiches to each while driving. Never have I had such an easy time using two hands to eat while driving. I had to keep touching the steering wheel every 30 seconds or so, but it was still easier than previous years without any sort of driver aid. It handled any curves on the major interstates we traveled. The only time I saw it having trouble was if I was in the right lane and was passing an exit or the bottom of an on ramp. The line disappears, and sometimes, the system was confused. More times than not, the system worked fine. I just had to be prepared in case it got confused.
My biggest issue is having driven for 46 years without any aid what so ever, I'd find myself driving in the right lane like you're supposed to, and now I'm following another car at the speed they are traveling. It was really hard for me to think that I'm approaching a car ahead, and I need to move into the left lane, way earlier than I have been doing all my life. I'd set the cruise 5 or 6 over the limit, set the following distance for the closest (one bar), and just go. It was so relaxing to drive this way, I'd find myself doing the limit or below, because I'm behind someone. No drama, no fuss, just coasted down to the speed the slow guy ahead of me was going while I wasn't paying attention. If I just sat in the left lane, there would have been a lot less slow downs. I had to start thinking aggressively and move over sooner if I wanted to keep my set speed.

I really enjoyed using the system and plan of using it on every trip we take.

______________________________

 

[slowginjoe]

About a month ago, I got back from a couple week trip from Northern Illinois, to SD, to SW CO, and back to IL. I used the LFA as much as I could, just to see how it worked, and what type of limitations there were. Turned out being 2980 miles @ 25.3 mpg. Total time 54 hours seat time.
My wife and I hate eating out, so we pack sandwiches to each while driving. Never have I had such an easy time using two hands to eat while driving. I had to keep touching the steering wheel every 30 seconds or so, but it was still easier than previous years without any sort of driver aid. It handled any curves on the major interstates we traveled. The only time I saw it having trouble was if I was in the right lane and was passing an exit or the bottom of an on ramp. The line disappears, and sometimes, the system was confused. More times than not, the system worked fine. I just had to be prepared in case it got confused.
My biggest issue is having driven for 46 years without any aid what so ever, I'd find myself driving in the right lane like you're supposed to, and now I'm following another car at the speed they are traveling. It was really hard for me to think that I'm approaching a car ahead, and I need to move into the left lane, way earlier than I have been doing all my life. I'd set the cruise 5 or 6 over the limit, set the following distance for the closest (one bar), and just go. It was so relaxing to drive this way, I'd find myself doing the limit or below, because I'm behind someone. No drama, no fuss, just coasted down to the speed the slow guy ahead of me was going while I wasn't paying attention. If I just sat in the left lane, there would have been a lot less slow downs. I had to start thinking aggressively and move over sooner if I wanted to keep my set speed.

I really enjoyed using the system and plan of using it on every trip we take.

That’s great to hear how the system is supposed to work. Maybe I have some hope yet if it gets calibrated correctly. I use it often as well except I need to be aware of the right curves and be ready to nudge it.

 

[Arnold_Trollzenegger]

About a month ago, I got back from a couple week trip from Northern Illinois, to SD, to SW CO, and back to IL. I used the LFA as much as I could, just to see how it worked, and what type of limitations there were. Turned out being 2980 miles @ 25.3 mpg. Total time 54 hours seat time.
My wife and I hate eating out, so we pack sandwiches to each while driving. Never have I had such an easy time using two hands to eat while driving. I had to keep touching the steering wheel every 30 seconds or so, but it was still easier than previous years without any sort of driver aid. It handled any curves on the major interstates we traveled. The only time I saw it having trouble was if I was in the right lane and was passing an exit or the bottom of an on ramp. The line disappears, and sometimes, the system was confused. More times than not, the system worked fine. I just had to be prepared in case it got confused.
My biggest issue is having driven for 46 years without any aid what so ever, I'd find myself driving in the right lane like you're supposed to, and now I'm following another car at the speed they are traveling. It was really hard for me to think that I'm approaching a car ahead, and I need to move into the left lane, way earlier than I have been doing all my life. I'd set the cruise 5 or 6 over the limit, set the following distance for the closest (one bar), and just go. It was so relaxing to drive this way, I'd find myself doing the limit or below, because I'm behind someone. No drama, no fuss, just coasted down to the speed the slow guy ahead of me was going while I wasn't paying attention. If I just sat in the left lane, there would have been a lot less slow downs. I had to start thinking aggressively and move over sooner if I wanted to keep my set speed.

I really enjoyed using the system and plan of using it on every trip we take.

My family and I took a trip to Southwest Colorado recently as well. We drove from DFW to Pagosa Springs last month. I didn’t track our total mileage during the trip, but we drove straight home in one shot and it was exactly 777 miles of driving in one day. You would think I would have been exhausted but I used the various driving assistance systems as much as possible and I wasn’t nearly as fatigued as I thought I would be at the end of the 12 hours of driving.

I was very impressed by the driving assistance systems and will continue to use them extensively on road trips. I also experienced some sketchy moments near exit ramps so I began proactively monitoring the systems when we would pass an exit. Other than that it was great.

 

[Yossarian]

About a month ago, I got back from a couple week trip from Northern Illinois, to SD, to SW CO, and back to IL. I used the LFA as much as I could, just to see how it worked, and what type of limitations there were. Turned out being 2980 miles @ 25.3 mpg. Total time 54 hours seat time.
My wife and I hate eating out, so we pack sandwiches to each while driving. Never have I had such an easy time using two hands to eat while driving. I had to keep touching the steering wheel every 30 seconds or so, but it was still easier than previous years without any sort of driver aid. It handled any curves on the major interstates we traveled. The only time I saw it having trouble was if I was in the right lane and was passing an exit or the bottom of an on ramp. The line disappears, and sometimes, the system was confused. More times than not, the system worked fine. I just had to be prepared in case it got confused.
My biggest issue is having driven for 46 years without any aid what so ever, I'd find myself driving in the right lane like you're supposed to, and now I'm following another car at the speed they are traveling. It was really hard for me to think that I'm approaching a car ahead, and I need to move into the left lane, way earlier than I have been doing all my life. I'd set the cruise 5 or 6 over the limit, set the following distance for the closest (one bar), and just go. It was so relaxing to drive this way, I'd find myself doing the limit or below, because I'm behind someone. No drama, no fuss, just coasted down to the speed the slow guy ahead of me was going while I wasn't paying attention. If I just sat in the left lane, there would have been a lot less slow downs. I had to start thinking aggressively and move over sooner if I wanted to keep my set speed.

I really enjoyed using the system and plan of using it on every trip we take.

As a new Telluride owner (September), with very limited seat time (just turned 2,000 miles) this is great to hear. This is my first experience with any sort of advanced driving control and while I'm getting more confident in the technology, I'm still just a bit anxious in using it. The biggest "issue" I have is that the system does not center the car and instead is slightly biased toward the left lane marker. Perhaps this is something that can be adjusted; I'll ask when I bring the car in for its first service which I hope will be early January (need to get some miles in!)

We will be driving west from PA in mid-Jan for our annual Rockies ski trip, with the first destination being a week in the Sierra Madre (Steamboat). From there, we will head south for a week in the Sangre de Christo (Taos) and then up to the Wasatch for several weeks. Highway driving will be about 2,900 out and 2,100 back, so a good test of not only the LFA, but also the HDA & complete SCC system.

 

[gyias]

Curious if you have any updates on what you found regarding LFA’s ability to keep centered around highway curves.

Mine does it perfectly when the highway curves left, but always crosses over the left line when the highway curves to the right.

That was my initial thought as well, but I later realized it was simply a perception issue. The driver seat is on the left side, so right curves look smoother, and left curves tend to look sharper. Try positioning your head in the middle when you test it out next time. You'll realize the angle limitations are pretty much same on the both sides.

FWIW, I ended up purchasing an OpenPilot system, and can't be happier now. It's 10 times better than the stock system, and I'm not exaggerating it. Everything is near perfect, except when I drive directly into sunlight (it sometimes causes lane marking recognition issues). I don't touch the steering wheel on highway except when switching lanes, which BTW is done semi-automatically by OpenPilot. Plus, it even works on local roads very reliably, I'd say 90% of them if you adjust the speed right.

______________________________

 

[jG5jU0cK8yY4nX0eF5mW8eH7p]

It is possible for LFA to steer both left and right. I find that if the curve is greater than about 25-30 degrees offset from heading straight the LFA will disengage. Usually LDW/LKA will give you a heads up that LFA is losing control, but not always if there are no visible lane markers. I have a 2020.

For 2022 models, this turn radius might be greater since it uses the new NSCC-Curve feature that slows down the car entering curves. But so far no 2022 owners have commented at which point, if any, the LFA will disengage.

I've got a brand new 2022 (SX) that I've been driving for one week (in the curvy hills of PDX), and I've definitely noticed how easily the system kicks off going around a corner (as described by the OP). I haven't noticed a difference between Left vs. Right, but as amazing as the system is, I'm surprised how easily it disengages at curves with smaller radii (no idea how to actually measure or quantify this though). On highways and freeways, the curves around here are gentle enough that the system has a very high success rate. On smaller roads, it's very unreliable.

But overall, the suite of "driver assist" capabilities in this vehicle is mind-blowing, given this is a $4X,XXX Kia vs. a Tesla or some other luxury SUV (eg, Mercedes, etc). I'm very happy with the Telluride!

 

[Pappy]

Just an observation that LFA will greatly vary its aggressiveness as your speed increases. I’ve found it quite helpful “hugging the curves” at higher speeds. I also think the system is smart enough to sense when you’re trying to test it while in good control of the car at lower speeds.

 

[chunky_mike]

That was my initial thought as well, but I later realized it was simply a perception issue. The driver seat is on the left side, so right curves look smoother, and left curves tend to look sharper. Try positioning your head in the middle when you test it out next time. You'll realize the angle limitations are pretty much same on the both sides.

FWIW, I ended up purchasing an OpenPilot system, and can't be happier now. It's 10 times better than the stock system, and I'm not exaggerating it. Everything is near perfect, except when I drive directly into sunlight (it sometimes causes lane marking recognition issues). I don't touch the steering wheel on highway except when switching lanes, which BTW is done semi-automatically by OpenPilot. Plus, it even works on local roads very reliably, I'd say 90% of them if you adjust the speed right.

Can you share- does the Openpilot allow you to let the software handle stop and go traffic without pressing any buttons to accelerate the car and does it steer in these instances? Which one did you get? The 2 or 3? Trying to decide which one to get.

 

[gyias]

Can you share- does the Openpilot allow you to let the software handle stop and go traffic without pressing any buttons to accelerate the car and does it steer in these instances?

Yes, it does. AFAIU, they do it by spamming the resume (or +) button every few seconds. Also they are about to enable longitudinal control on Kia/Hyundai cars. When it's released, it'll even slow down in advance for sharper curves so that you don't have to disengage and manually control the car.

Which one did you get? The 2 or 3? Trying to decide which one to get.

I got 2, but 3 wasn't available when I bought it. As I wrote, my only complaint right now is it sometimes fails to recognize lanes correctly when driving directly into the sun. 3 is supposedly better at handling those situations? Also, it'll definitely better at recognizing the car in front of you, which will make it perform better at longitudinal control, e.g. reducing speed to full stop when it sees a stopped car ahead. And, there are a few more minor improvements, such as wider indoor camera FOV. I'd recommend 3 if you can afford it.