2019 5.15 Autopilot hesitating on freeways

[AgentMir]

Is anyone else experiencing this? Since updating to 2019.5.15 the car seems to randomly let off the gas off and on for no reason. For drivers following me, they think I'm brake checking them causing quite a bit of road rage.
It'll go 5 minutes just fine, but it'll suddenly start to do it again in spurts

 

[CovertADV]

I experienced this several times yesterday in the 405 HOV lane with my Model X (2019.5.15). The first time it happened a car to the right (not in front) was drifting a little too close to me, but the other times there were no obstacles.

 

[Penfold]

Same here, noticed this a number of times. Had to accerlerate a number of times due to the car behind getting somewhat close when mine is breaking/slowing for no reason at all.

Edit: i’m On 2019.5.14 but still get the same issue

 

[SoCal Buzz]

Same here. It seems to hesitate and sometimes slow quite a bit when cars in parallel lanes move slightly towards your lane in front.

 

[Alketi]

With 5.15 it seems more likely to "speed-match" a slower vehicle in an adjacent lane. Not sure what they were trying to tweak, but I report the issue (via in-car bug report) when it happens.

 

[boaterva]

Only data point I have is hesitation in lane changes (back and forth, not able to commit, no car there to obstruct). Haven’t tested a lot so not much to say about acceleration issues.

 

[diamonds2]

I had the same issues with 2019.4.2

I lived with it for a week, hoping I'd get an update. When no update happened, I call the SC and told them the issues and they pushed me an update. I was hoping for at least 2019.5.15, since that is now in wide release, but only received 2019.4.3.

Upon my first drive with 4.3, I had the same issues. After reboot the issues seem gone.

 

[trident]

Only data point I have is hesitation in lane changes (back and forth, not able to commit, no car there to obstruct). Haven’t tested a lot so not much to say about acceleration issues.

What a distraction trying to lane change while going around a corner on the highway. It will go for the right lane then go right back to the lane I am in, center lane, then try again for the right lane. I just have to click it off. The system cannot figure it out, turn signal on too.

 

[boaterva]

Sigh... hopefully we all get 2019.8.2 soon, seems to be next one teed up with everything!

 

[conman]

I've had this problem since 2018.50.6. It's a real pain. It also randomly slows down when cars in adjacent lanes aren't perfectly centred, just in case they're about to move into my lane :\

 

[AgentMir]

I'd be very surprised if they haven't noticed a huge spike in autopilot deactivations recently, something they apparently monitor. Hopefully a fix in the next update. I'm glad I wasn't the only one having this issue.

 

[Camera-Cruiser]

My wife hates our 3 now because of this. It scares the sugar out of her as a passenger. She has never used AP when driving herself, and I was just starting to trus it in the prior releases. Getting rear-ended in In So-Cal is very likely since we drive so tight on our freeways to avoid sniping.

The weird thing is that it doesn’t seem to affect TACC.

 

[trident]

My wife hates our 3 now because of this. It scares the sugar out of her as a passenger. She has never used AP when driving herself, and I was just starting to trus it in the prior releases. Getting rear-ended in In So-Cal is very likely since we drive so tight on our freeways to avoid sniping.

The weird thing is that it doesn’t seem to affect TACC.

My wife hates it as well. When she is in the car I turn everything off.

 

[emmz0r]

Same issue, and I'm on 2019.4.3

 

[conman]

It's an unfortunate trend that as the autopilot tries to do more and more, it becomes more conservative meaning even more false positives leading to random braking and slowdown events. I have postulated in the past it will continue to get worse as more FSD features become available before it starts getting better.

Phantom braking will get a lot worse before it gets better

 

[powaking]

I experienced a similar behavior today (2018.50.7). 2 lane highway and I was slowly passing a car that was on the right side lane. Then a car behind me was approaching so just as I was about to be ahead of the car on the right I put my signal on to switch lanes. You would think the car would wither a) continue to cruise at existing speed and then pass or b) accelerate a little more to then switch lanes. Instead the car slowed down. Like why? There’s a car behind me and no car in front of me. I did file a bug report as I was more interested in pressing the accelerator to get in the lane. Hopefully Tesla received the logs of the interrupted AP and hope to improve upon.

 

[conman]

I did file a bug report as I was more interested in pressing the accelerator to get in the lane. Hopefully Tesla received the logs of the interrupted AP and hope to improve upon.

Bug reports stopped being uploaded after Tesla had sold hundreds of thousands of cars. If you're lucky there is a stored snapshot there and the service centre can extract it - and service centres can't do a thing about subtle software design issues upstream at Tesla which is about 50 layers removed from them. There used to be an email for feedback about autopilot but that also has long since become defunct. Tesla is too big to respond to personal level bug reports or feedback any more.

 

[Downtown]

Based on this thread I will be on high alert for Mon morning commute tomorrow with AP

 

[shirosan]

OP, back when you posted this I notice having similar issues when on the expressways/freeways out here in Tampa, FL. I haven't noticed it much lately, and I have recently updated (2019.5.16) and have not noticed the issue (yet). But it is good to know others are/were having the same issue.

 

[jeffro01]

Same here in my X, very unsettling and I'm trying to figure out what it's reacting to. At first I thought it was reading turn signals from the adjacent lane and trying to aggressively break just in case that person was about to change lanes in front of the X but that pattern didn't hold up for long...

Jeff