2021 Phantom breaking override?

[scottycs]

All the time!

Does anyone experience phantom braking when using HOV / express lanes on AP and traffic in the normal lanes is moving a lot slower?

Maybe this is either automatic emergency breaking (AEB) or perhaps even the Adjacent Lane Speed system?

There typically are divider sticks (which the car recognizes as cones) between the express lane and normal lanes, and I'm wondering if my car is panicking at the entry / exit points? Thing is, there is still an empty entry/exit lane between my car and the normal lanes with slow traffic.

There are no overpasses or other obstacles I can think of that would cause this sudden braking behavior.... so I think it has to do with Tesla's

Any way to prevent it from doing this?

 

[Duncan Parks]

Right?! Me too! I AM afraid!! I threw my back out the first time it happened it was such a hard stop while going 65mph on the frwy with NO one in front of me. A big truck on the right set it off. Why wouldn’t it anyway move to the left to get away rather than break? There was no one to my left?
Did anyone answer your question about turning off the emergency breaking? I don’t see an answer… but I did see on a YouTube video you can hold the right button on the steering wheel and say “Bug report, Phantom Breaking,” after OT happens and it will send the info to Tesla

I don't think your workaround will work; TACC and Autopilot will override your selection to turn off emergency braking. As will putting the car in park (you have to turn off emergency braking every time you drive if you want that). Tesla *really* doesn't want you doing this!

 

[jamesxtxt]

just to share my experience:

One of my usual route is 105 East from El segundo Ca to Norwalk Ca. and one of the spots where i normally get the phantom braking is at the 105E to 110 North where there's 2 ways you can go. The speed around 67 MPH will sometimes come down to 60 MPH. I thought at first it might be a glitch that causes phatom braking but why is it happening in the same spot all the time. For my experiment, i tried setting my navigation to norwalk vs of just being on cruise control with no destination set in gps. The result was the phantom braking didn't occur in that spot of the freeway but when i drove by the same spot with just the cruise control and with auto pilot with no destination in the gps, it does the phantom braking. I wonder if the computer in the car is just adjusting / giving the driver enough chance to decide which route to take switch lanes? and if the car is accounting the navigation map... (you know when sometimes the navigation thinks you're on another road when there's an overpass or lane migration to another freeway.)

(disclaimer: i did my test safely when no one was behind me.)

 

[Nomoev]

I’m less worried about rear-enders than the panic induced in passengers (and pets) when a phantom braking event occurs, especially passengers who have never experienced PB before and their resulting WTF moment. After 3 years for me it is less panic and more frustration and annoyance. Not sure how “common” phantom braking actually is, but I’ve had it on my radar-equipped June 2018 Model 3 since day 1, and still have it on v24.11 (not sure if that firmware uses the radar on radar-equipped cars). Since TACC has to be active for AutoPilot to activate, coupled with phantom braking on just TACC without active AutoPilot, I’ve assumed the issue is TACC. Then some folks including Elon posited that the removal of the radar or modifying software to not use it will eliminate phantom braking. Didn’t happen if the forums are any indication.

Curious about your hypothesis about disabling AEB: have you tried it? If so, any improvement to PB? I too would prefer to keep AEB enabled, but if that is the root cause, or at least a cause that I can control, of phantom braking, it would likely be a good trade off with passengers/pets in the vehicle.

Regardless, I still want a dumb cruise control setting option.

Ditto I have only driven 300 miles and it’s all been frustrating

 

[Saxgod]

Have had our 2021 Modely Y since June. About ready to sell the car. If only it had a dumb cruise control. 70k vehicle and can’t even use cruise control without constant phantom breaking. This sucks.

 

[irievibe]

Braking. The word is braking.

Hahaha, well the way the Tesla is operating, it feels like breaking

 

[irievibe]

Have had our 2021 Modely Y since June. About ready to sell the car. If only it had a dumb cruise control. 70k vehicle and can’t even use cruise control without constant phantom breaking. This sucks.

Fully agree. 2021 Model Y as well. I have tried disabling all emergency stopping settings to no avail. I will look into the calibration as stated in this thread

 

[DerbyCityY]

I will receive my Model Y May/June and I do not feel warm and fuzzy. There are a few things I would like a smooth egress going to an ev and cruise control is one of them. This is a problem noted in November and Tesla's had over three months to address the issue. I believe if it were totally software related they could have implemented a fix by now.
I haven't lived with Tesla long enough to just have faith that the Almighty Download will put it's hand on my Model Y and say, heal. Tesla needs an owner communication department since this is our daily driving experience, not a different screen on your iPhone. I feel they need to treat owners different than the general public.

 

[Chazutx]

First timer to take my 2022 M3P out of town about ~225 miles one way and back….almost entirely highway. Experienced PB for the first time on this trip…happened 3 times where no other car, thing, road hazard, you name it was near me. It’s extremely nerve wracking when it happens and has given me zero confidence in autopilot that’s for sure. How serious is this problem for most?

 

[boonedocks]

First timer to take my 2022 M3P out of town about ~225 miles one way and back….almost entirely highway. Experienced PB for the first time on this trip…happened 3 times where no other car, thing, road hazard, you name it was near me. It’s extremely nerve wracking when it happens and has given me zero confidence in autopilot that’s for sure. How serious is this problem for most?

There are so many people that say "phantom braking isn't real". "Never happens to me". While some of us, me included, have it regularly. Thank you for posting your experience as maybe some of the trolls here will back off. LMAO

 

[Dewg]

PBs are a fact of life for Tesla drivers. When I got my MY in early 2021 (w/radar) I had fairly frequent PBs. When I was put on Beta (vision only) things got a little better (less PBs around overpasses and large signs). But updates over time have reduced PBs significantly for me. I still get them from time to time, but usually minor (few MPH then right back up). I also recalibrate my cameras every major point update, or if the update is quite large.

 

[MeltingICEage]

Phantom Braking is a real problem in our 2022 MY LR driven for 2 months now and about 4k miles. I think its happened a dozen times at least, sometimes so severe I was afraid of getting rear-ended (had someone been close behind). One problem may be oncoming traffic on a curve, or perhaps shadows or who knows what. Once it slows way down you can't just force it back up to speed and let off the accelerator - it slows way back down again. It seems you have to accelerate back up, cancel cruise, then re-enable. A royal pain. I don't care to think what drivers behind are saying about "my" driving!