I recently completed a 5800-mile round trip from Portland, OR to Lafayette, LA. I have a June 2021 Vision only Model Y, and I used Autopilot as much as possible. Loved the car and wouldn’t have been doable by me without Autopilot.
On the way there I used the latest production version (can't remember the version number). Driving through California I was experiencing phantom breaking more often than I was used to until I remembered that I had changed some of the settings for the trip, so I changed back to using current speed instead of speed limit and turned off red light detection. It seemed to reduce the breaking, and what I did have wasn't serious.
Before I left for the return trip, I received the FSD Beta and so I drove back using 10.4. At first it seemed that phantom breaking was about the same, but once I hit some of the emptier stretches of the freeway, I had a lot of phantom breaking, and it was a lot more severe.
1) The first one wasn't even in Autopilot, I was driving manually and entering a construction zone where the 2 lanes of freeway was going down to 1, I was in the lane that kept going with the other lane blocked off by cones, the collision warning went off and the car braked hard enough to lock the seat belt and make my chest sore from the belt. Since I have the beta, I hit the camera report button (and sent email to Tesla) and did a dashcam recording.
2) I turned off forward collision warning, had another hard breaking event while in Autopilot, again with the alarm that I associate with forward collision alarm. So not wanting it to happen again, I turned off emergency breaking (the one that you must turn off every time you start driving) and left it off for the rest of the trip.
3) Had a 3rd hard breaking event, again on Autopilot.
After these 3 events (and many less serious phantom breaking occurrences) I came up with the following:
For the 3 hard breaking events, at least 2 of them (1st and 3rd, not sure about the 2nd) happened right where a previous driver had slammed on their breaks and left skid marks that veered to the right. Both events happened right at the beginning of the skid marks.
If I follow someone, doesn’t even need to be close, as long as I can see the car on the monitor, I never had any kind of phantom break. All the breaking events occurred when I had an empty road in from of me. I figured this out with more than half the trip home left, so by always making sure that someone was in front of me, I drove about 1500 miles without any phantom breaking.
Normally I'm not a fast driver, and I usually just find someone close to the speed I want to go, preferably an 18-wheeler, and follow them. Wondering if that's why I don't usually experience much in the way of phantom breaking.
Thoughts?
On the way there I used the latest production version (can't remember the version number). Driving through California I was experiencing phantom breaking more often than I was used to until I remembered that I had changed some of the settings for the trip, so I changed back to using current speed instead of speed limit and turned off red light detection. It seemed to reduce the breaking, and what I did have wasn't serious.
Before I left for the return trip, I received the FSD Beta and so I drove back using 10.4. At first it seemed that phantom breaking was about the same, but once I hit some of the emptier stretches of the freeway, I had a lot of phantom breaking, and it was a lot more severe.
1) The first one wasn't even in Autopilot, I was driving manually and entering a construction zone where the 2 lanes of freeway was going down to 1, I was in the lane that kept going with the other lane blocked off by cones, the collision warning went off and the car braked hard enough to lock the seat belt and make my chest sore from the belt. Since I have the beta, I hit the camera report button (and sent email to Tesla) and did a dashcam recording.
2) I turned off forward collision warning, had another hard breaking event while in Autopilot, again with the alarm that I associate with forward collision alarm. So not wanting it to happen again, I turned off emergency breaking (the one that you must turn off every time you start driving) and left it off for the rest of the trip.
3) Had a 3rd hard breaking event, again on Autopilot.
After these 3 events (and many less serious phantom breaking occurrences) I came up with the following:
For the 3 hard breaking events, at least 2 of them (1st and 3rd, not sure about the 2nd) happened right where a previous driver had slammed on their breaks and left skid marks that veered to the right. Both events happened right at the beginning of the skid marks.
If I follow someone, doesn’t even need to be close, as long as I can see the car on the monitor, I never had any kind of phantom break. All the breaking events occurred when I had an empty road in from of me. I figured this out with more than half the trip home left, so by always making sure that someone was in front of me, I drove about 1500 miles without any phantom breaking.
Normally I'm not a fast driver, and I usually just find someone close to the speed I want to go, preferably an 18-wheeler, and follow them. Wondering if that's why I don't usually experience much in the way of phantom breaking.
Thoughts?