surely it can’t be that simple. Mind you they say the smartest people often lack common sense
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Phantom braking still an issue
- Thread starter Mr Miserable
- Start date
surely it can’t be that simple. Mind you they say the smartest people often lack common sense
There’s a big difference between a safe speed adjustment and an inappropriate and dangerous emergency braking event. I can only assume you’ve never experienced this to be able to say that it may be operating as Tesla intended
I've experienced hard slamming on of brakes and more gradual application. I have seen the TACC / set speed indicator change as I passed motorway junctions, I've seen TACC speed revert to the wrong speed after a string of speed changes. Sudden hard braking coming out of a tunnel, going under bridges / sign gantries and overtaking curtain side lorries especially.
It is hard for every post to include all your posting history as context.
Tesla seem inclined to try and claim stuff works fine / within limits. Hence:
I'm not suggesting that anything about phantom braking is normal. I am suggesting Tesla might try and say by some warped reasoning it is normal.
Plenty of people in the US suffer from it, they complain about it often.
In the US the situation is exactly reversed with the bulk of the car in the right. There's no practical difference other than that.
Cardo
Active Member
I’m pretty sure Bjorn has complained about phantom breaking on a regular basis. Sadly, this appears to be a common theme.
Even Elon has acknowledged there’s a problem by suggesting that phantom breaking ‘should be’ resolved with fsd rollout
Glan gluaisne
Active Member
He has indeed. I was watching one of his video's yesterday, a trip to the far north of Norway somewhere. He was chatting away about something unrelated, had a phantom braking event, and just over-rode it, with the only interruption being him saying something like "oh, no, phantom braking". I think this is just baked in to the way the car behaves now, and seems unlikely to change until there is some sort of major revision to autopilot. If it only affected autopilot then I'd not be that bothered by it, it's the way it, and other false threat detections, affect TACC that I find irritating. If we just had the option for dumb cruise control it would be retrograde step in some ways, but far more useful in others.
The daft thing is it would probably take the devs about 5 mins to provide a dumb cruise control mode and you suspect it's wounded pride that prevents Tesla from implementing it.
AndrewGR
Member
Since TACC is clearly an important component of FSD and dumb CC isn’t it would be a serious admission of failure to introduce it now.
squarepeg77
Member
It’s a while ago now, but I think TACC was pretty good on my AP2.5 car until they introduced the monitoring of other lanes. I think it was when autopilot started checking for other vehicles cutting in to your lane that the phantom braking got bad. Before that, I only remember occasional phantom braking with bridges etc.
When overtaking trucks, they regularly jump in the visualisation from the left lane to the middle lane. I wonder if the cameras aren’t sufficiently wide angle.
I’ve also noticed how cars seem to drift in their lane in the visualisation as you approach them and start to overtake (or they overtake you). I wonder if it’s when the different cameras get a view of the car: B pillar to front wide-angle, for example
When overtaking trucks, they regularly jump in the visualisation from the left lane to the middle lane. I wonder if the cameras aren’t sufficiently wide angle.
I’ve also noticed how cars seem to drift in their lane in the visualisation as you approach them and start to overtake (or they overtake you). I wonder if it’s when the different cameras get a view of the car: B pillar to front wide-angle, for example
MrBadger
Badger out
Having seen similar on a FSD city streets beta with parked cars not in the correct place, I have a theory about that.
FSD Beta Videos (and questions for FSD Beta drivers)
I am thinking that it may occur as the vehicles transitions
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I see this a lot too. I've only had the car for about a month and I am already beginning to predict when TACC is going to brake unnecessarily (I've only had pretty moderate braking events so far). I suspect it would work just fine if you could disable monitoring of other lanes.
Wol747
Active Member
I don't think this is the only reason - I and many others have had PBs in all sorts of environments that in no way could have been due to that.
One place I always seem to get them is on a motorway 50Km South, even when I'm the only car in sight. No bridge, nothing unusual.
Interesting. Guess I have more to ‘look forward to’ then. Let’s hope they sort it with the big update!
Had my car a little over two weeks now and had this braking occur twice on separate occasions. Worst one was yesterday heading north on the M40 (apologies to the BMW driver who must have been as scared as I was! ) when I overtook the BMW whilst on autopilot then indicated to pull back in and moved across the lane lines the car effectively slammed on the brakes. How I didn't end up sideways and be hit by the BMW I've no idea but that could have been a really serious incident. As far as I can tell the car is fully up to date and otherwise working fine. Very wary of autopilot now.
Make sure you're well past any vehicle before pulling back across in front of them, significantly more so that you would do "naturally". That should significantly reduce the risk of that scenario happening again.
Wol747
Active Member
When you're using the "full" (present) autopilot function and it makes lane changes on its own it doesn't pull back in for what seems an age: it's totally different to what drivers expect and do.
MrBadger
Badger out
Was this using EAP or FSD's auto lane change or were you doing the lane change manually?
Pagemakers
Active Member
I drove from Manchester to Portsmouth a couple of weeks ago. Most of the journey had autopilot and TACC engaged.
While the general drive was pleasant and enjoyable enough, half a dozen times, both ways were nothing short of bloody dangerous.
For seemingly no reason the car just slams on the brakes. You could be in the fast lane doing 70mph when this happens totally out of the blue. Sometimes it happens when over-taking. Sometimes when changing lanes and sometimes with absolutely nothing around at all including bridges or shadows.
It is wholeheartedly inexcusable for this to be happening so often. I’m in the 5th year of my 2nd Tesla and this has never ever gotten any better. If anything it’s even more violent then before.
Maybe radar and vision are conflicting, maybe not.
I wouldn’t bet more than a few pounds that this will ever get fixed.
While the general drive was pleasant and enjoyable enough, half a dozen times, both ways were nothing short of bloody dangerous.
For seemingly no reason the car just slams on the brakes. You could be in the fast lane doing 70mph when this happens totally out of the blue. Sometimes it happens when over-taking. Sometimes when changing lanes and sometimes with absolutely nothing around at all including bridges or shadows.
It is wholeheartedly inexcusable for this to be happening so often. I’m in the 5th year of my 2nd Tesla and this has never ever gotten any better. If anything it’s even more violent then before.
Maybe radar and vision are conflicting, maybe not.
I wouldn’t bet more than a few pounds that this will ever get fixed.
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