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At the risk of outing myself as delusional, I just joined the sudden acceleration club. Never quite believed the stories, but I'm not so sure now.
So I had a few incidents recently, nothing major and no accidents, but startling. Had the last one today. What happens is that the car lurches forward as I start to brake after coasting to a light in traffic. Happened in the rain a few times and I thought maybe I hit a slick patch or something, but today it was dry and it happened again. Each time just after coasting right as I ease into the brake. Sped up for just an instant, but I stopped it each time by screaming and braking harder. And I am certain that my foot was on the brake the whole time or I have already lost my marbles and you can stop reading now.
Have an appointment scheduled to give the mechanic a chuckle, but I also have a theory under my tinfoil hat. I think this might be to do with the regerative brake. I suspect that while coasting on regen, once in a blue moon, the brake pedal somehow disengages the regen before the brakes kick in, so after decelerating on regen, the car tries to jump back to that sweet spot where it coasts like an ICE car. It definitely speeds *up* before the scream braking, like its assuming the accelerator must be pressed to have disengaged both brakes.
So I punch the brake harder and it works, I never assume I on the wrong pedal. But I also want to believe that outside of AP, nothing should make it accelerate but the accelerator, so that leaves me with an issue with the regen/brake transition or a very selective kind of psychosis.
Don't know if or how this relates to other reports, but I am hoping to get it settled soon. Can't imagine not driving my car. I am obligated to profess my love for family, but that S is the best thing that isn't married or related to me.
The problem of creep is when you take off your foot from all pedals, the car still coasts at a very good speed.
Yeah, thats how mine behaves. Regen starts as you ease off the accelerator so you slow down with your foot off both pedals until you get down to creep speed.Taking your foot off engages normal regen identically to no creep mode down until ~3mph
...Taking your foot off engages normal regen identically to no creep mode down until ~3mph...
I have this exact issue, I've tried raising it with both Tesla and the community on several occasions over the past 18 months with everyone suggesting I'm crazy or doing something wrong.I have 3 places where I have this happen to me routinely. They all have the following characteristics:
1) Downhill
2) Bumpy
3) Near terminal braking
I’ve been over these spots hundreds of times and it happens every time unless I plan ahead and go even slower. However, the problem went away 2 software updates ago.
I've used both creep & no-creep modes. I have to push much harder in creep mode to get a brake hold. You have to mash it hard.With creep, I could not activate a brake hold whether it's automatically or manually. That is very strange.
Just push the brake pedal in a little more. It's not that much effort. I use it at almost every traffic light.With creep, I could not activate a brake hold whether it's automatically or manually. That is very strange.
That means, with creep, I need to constantly apply the brake which can cause brake fatigue for me so I would slightly ease it off and it accidentally moved forward because there is no automatically a brake hold.
I have seen that, too. Often right after its turned on, it goes like a frat boy even when there's a car close in front. Always reminds me that until the Singularity, we are technically driving the car even on AP.And sometimes it accelerates at inopportune times, which I override with the brake,
Newer Teslas (AP1+) have brake position sensors, as well as brake pressure sensors. These help the car apply an appropriate amount of regen while friction braking force increases, in order to not have a situation where the car ends up with less deceleration when you move to the brake. If these are registering more brake application than actual, the car may be commanding less regen than it should be.
Just push the brake pedal in a little more. It's not that much effort. I use it at almost every traffic light.
...I put the car into drive and 'probably' removed my foot from the break, it lurched forward, a lurch...
All S / X / and 3 can go to TACC from standing still.
But Model 3 owners might experience it more because with the S and X, the TACC stalk is on the left opposite from the gear stalk while Model 3 TACC stalk is the same gear stalk.
From standing still or very slow speed which normally is not eligible for TACC because of being under 18MPH but if there's a car in front, TACC can be activated from the speed or zero.
Since Model 3 owners can swipe the gear stalk quickly to drive and might repeat it again to make sure it goes to drive gear, but the second action actually activates TACC if there's a car in front.