Yours seems to be an unusual case as the vast majority of phantom braking events reported on TMC are of the more moderate kind. Sure there are a handful of harder ones, but full on AEB type braking is rare (except for that FSD Beta 10.3 fiasco)
Do you have just Basic AP? or FSD?
Have you tried recalibrating the cameras?
I'd do the camera recalibration and then start turning off all the stuff I could think of in the autopilot section to see if it resulted in any improvements.
For FSD owners the Traffic Light response one will cause more phantom braking if enabled.
I have FSD but it seems to occur on AP (i.e. freeways where FSD isn't being used yet), on FSD as well as when I'm only using TACC. Of course there's no 'dumb' cruise control option, so there's no way to tell if it's just a fault with the cruise part of the algorithm or with the traffic aware part.
I haven't tried recalibrating the cameras - that's a good suggestion. I'll look up how to do that and see if it helps. Like I said, I will regularly get minor slowdowns in situations where the cameras shouldn't play a role (straight road, no cars, no lights, no shadows, etc), but who knows.
I STILL say it's the inability (unwillingness of the programmers) to vary the regen. If the regen was variable and the physical brakes were used some, the Tesla could BEAT the Mazda in smoothness. The Mazda doesn't jerk because when it lets off the gas, it just coasts. Heaven forbid a Tesla could just coast! This is one of the areas where Tesla's stubborness and hubris is on full display.
You may be right. We really don't know what's going on in the computer. Is it intentionally decelerates or if there's just an interruption in power delivery? People making the argument that "it's not using the brakes, it's using regenerative braking" are just clueless because it
doesn't matter. The whole point of cruise control is to maintain speed and of TACC is to adjust the speed based on what's in front of you. If TACC can't distinguish between the two then it's an even bigger failure.
When I wrote that post I knew that there was a non-zero chance of false AEB activation, but felt like the conversation was mostly about phantom braking while on TACC/AP.
It's tough to differentiate between the two in a Tesla because lots of us including myself predominantly drive on the highway/freeway with TACC or AP. So we have no idea what would have happened if we were driving manually.
I wish the car had a counter of AEB activations so we would know.
The end result of phantom braking and auto emergency braking is the same (unwanted/unnecessary deceleration of the car) but they are two different issues. With AEB there is a blaring alarm and TACC is (or should be) deactivated as part of the event. (the dash cam should be activated as well.) With phantom braking there is a sudden deceleration of varying intensity magnitude followed by a resumption of the previously set speed. It may be related to curves, passing vehicles but frequently has no discernible trigger. False AEB activations can clearly be dangerous. Phantom braking potentially so but generally much less likely to be dangerous. (unless you have a hot cup of coffee and it spills in your lap because the car suddenly slows down.)
The last time I drove my MY for a longer period, TACC would randomly slow down by 2-3 MPH every 10 minutes or so. On several occasions it slowed down 10-15 MPH. There was never a good reason an it always resumed the set speed afterwards. In all occasions it was enough to make us sway forward in our seats and on several occasions woke up the dogs in the back seats.
you're right, many people seem to confuse AEB and PB. I quit reading Knightshade's ramblings but from his/her earlier posts the problems he identified in other makes seemed to be AEB more than issues with TACC.
As I've said, I've personally experienced a handful of false AEB activations. They're pretty uncommon and most often have some identifiable trigger but they're not the post of this thread.
