FSD 12.3.6 Driving Too Close/On Center Line

[LTC(R)Mark]

I have had my Model X for just over 3 months now. This issue may have started with 12.3.5 but definitely seems more pronounced with 12.3.6: my car drives extremely close to the center line. At first, I thought it was just my perception, that the car wasn't really that close to the center line. But some of our roads in town have embedded reflectors between the lane markings, and I can sometimes hear the car riding over these reflectors, meaning its clearly on top of the center line. Has anyone else had this experience? When issues like these creep up, is it worthwhile to recalibrate the cameras?

Thanks.

 

[mxnym]

Re: camera calibration, when you can tell it's driving over the reflectors, does the visualization show the vehicle on the yellow line? If it does, then it seems the cameras are accurately telling the visualization were the yellow line is...

 

[Ctuna]

(with FSD on)during left hand curves on Highway 17 near Santa Cruz it seemed I was coming dangerously close to the cement center medium to the point the car
was going over the reflecting tabs on the yellow line no more than 6 to 8 inches from the cement divider.
Other things on FSD that repeat . The car seems to latch onto the last speed sign it see' the trouble is there is not always speed signs when speed changes.
One example is when I enter Highway 17 from ocean street in Santa Cruz it things it still a 35 mph zone for 2 or 3 miles when it's 65 .
Occasionally it will light a parked car as Red when I am driving or during FSD for no apparent reason, sometimes happen when there is curve in the road .
Other time it's a truck parked between two other cars.
Slow to enter lanes of traffic during a turn then hard acceleration during FSD.
At corners where side vision is blocked it has a hard time deciding what to do sometimes it leaves you halfway into the lane you are crossing in
a left hand turn.
FSD 12.3.6 model y LR 2023 hardware 3

 

[Genie]

Since I installed 12.3.6 a couple hundred miles ago I’ve felt it is almost constantly hugging the right/fog line and occasionally driving on the rumble strip/shoulder. It will hug the yellow/center but much less often.
Equally annoying is how the TACC is now behaving- falling off of the max set speed for no reason 1-10 mph. It does this all the time now and it’s getting very old.. I have to speed back up to where I have it set, usually 3x, before it stays there. It has never done that before.
12/20 build raven x performance.2024.3.25 recision

 

[mxnym]

Equally annoying is how the TACC is now behaving- falling off of the max set speed for no reason 1-10 mph. It does this all the time now and it’s getting very old.. I have to speed back up to where I have it set, usually 3x, before it stays there. It has never done that before.
12/20 build raven x performance.2024.3.25 recision

Clean your cameras? You're describing some FSDBv11 behavior that I sure hope aren't coming back in SFSDv12,

 

[Ctuna]

If you look on some of the blog channels they are saying that 12.3.6 is still a mixture of 11
and something else. They thing I read this morning is it won't be the real full stack till 12.4

 

[mxnym]

If you look on some of the blog channels they are saying that 12.3.6 is still a mixture of 11
and something else. They thing I read this morning is it won't be the real full stack till 12.4

If you drive on divided highways that aren't limited access and also on limited access highways, you will certainly notice significant differences with regard to how it behaves between the two. That is my experience, anyway, which is to say my experience corroborates the first claim.

 

[Ctuna]

Never seen a limited access highway here in California but I have never driven a Semi.

 

[mxnym]

Never seen a limited access highway here in California but I have never driven a Semi.

"Limited access" means you can only get on or off via ramp (no controlled intersections). The proper noun for these in the US is usually "Interstate." I don't think you can live in Santa Cruz and not see one. You might have meant the opposite, which would make sense considering that highways that look like Interstates but have intersecting roads that are 2 way stops with traffic lights miles apart generally won't exist within densely populated areas.

 

[xtessy1]

I am having the same issues around the car driving too close to the center yellow line, as well as not keeping up with the set speed. My car has crossed the center line and veered completely into the oncoming lane multiple times since the 12.3 upgrade. I was coming home late one night, and since there was no one on the road, I let the car go all the way over the center line. It continued into the other lane, heading for the opposite ditch before I had to obviously take over.

Also, the car will not go the set speed. Even if I push the accelerator to increase to the set speed, it will creep back down to the speed limit or lower. These two issues make FSD too dangerous and too consistently slow to use. I live where there are a lot of two-lane highways and drivers get angry and aggressive if you aren't going at least 5 over the speed limit. I've had a Model X since 2016 (I'm on my second) and it seems like it behaves worse than when I first started driving a Tesla.

 

[Ctuna]

"Limited access" means you can only get on or off via ramp (no controlled intersections). The proper noun for these in the US is usually "Interstate." I don't think you can live in Santa Cruz and not see one. You might have meant the opposite, which would make sense considering that highways that look like Interstates but have intersecting roads that are 2 way stops with traffic lights miles apart generally won't exist within densely populated areas.

Yeah it's a 4 way stop light on to highway 17 going towards San Jose. It wants to stay a 35 mph according to the FSD display for about 2 to 3 miles despite it being a highway as soon as you cross the intersection. People accelerate pretty much up to 65 as soon as they cross onto the highway .

 

[Ctuna]

I finally figured out where the 10 mph speed setting came from at the Emeline street off ramp in Santa Cruz . It read's the bridge clearance for a left hand turn
off the warning sign for truck height clearance for trucks making a left hand turn under the bridge for the freeway overpass . Clearance is something like 14' 10" it apparently read the 10 and stays stuck on it once you turn on to the street. Goes to 10mph right after the sign no speed limits posted there. If you turn onto the street coming from the next residential street over the speed limit is fine at 25 .

 

[rb14060]

I'm noticing the same behavior on a 2020 M3LR. In some cases the visualization does show it's over the center line, but in other cases I feel like it's just riding way too close for comfort. I've intervened a few times when I felt like it was going to run into the lane next to me, especially with cars in it and going around curves. Might try a camera calibration to see if that does anything.

 

[nothingisreal]

Same exact issues in 2023 Model X Plaid. It's absolutely bonkers, will just ride on those reflectors for 10-20 seconds straight. I will be driving 9 over and set AP for 9 over, let off accel and it will drop 5-10MPH instantly. Family members all hate it now.

 

[Jersey_guy_202]

Strange. Never experience this on 22 MXP on 12.3.6. If anything sometimes it hugs right side occasionally but much better than previous model. So far in a month driving mix highway and local I don’t have this issue. The driving itself is almost perfect, it’s the stop sign and speed changes I’m having issues with.