Assistance systems causing dangerous situations (serious)

[USMA81]

I believe the OP’s round-about issue is the vehicle’s collision avoidance system falsely detecting an imminent collision. I had this happen in my Audi EV when an oncoming car was turning left in front of me, which I saw. This system slammed on the brakes when I let my vehicle get closer to the turning vehicle than it thought I should. In fairness to the system in my circumstance, I did shave it closer than I should have, but the other vehicle was going to be out of my path before I hit it.

The Innodrive for me is great. I mostly use it on the highway. It’s better than the Audi technology from just a few years earlier. I initially thought Innodrive was biased to keeping me too close to the right side of the lane, but I now think I previously had developed a bad habit of manually driving too far left in the lane. So the system has done a better job than me in centering (except in those situations where I do want to be slightly off-center).

I do use the LKA, and disable it briefly with the turn signal as necessary. LKA will “ping pong,” but that Is normal, as the name suggests - just keeping in the lane, and no more.

 

[Timcat]

Lane Keep Assist is hopeless in my Macan and keeps trying to cause the car to veer off course, but in my experience, the equivalent systems in all current cars are just as bad! Innodrive 's Active lane Keeping, on the other hand, is on a par with Autopilot in my Tesla in most respects and better in one, it doesn't suffer from phantom braking.

My "pre-flight" routine is to disable both the speed limit warning, via the diamond button, Lane Keep Assist via the button under the cruise control as soon as I get into the car and I'm then not bothered by these irksome systems!

The presence of these two systems is not the fault of manufacturers like Porsche, but the result of meddling politicians who think they know best, which they don't, and who seek to control every aspect of our lives!

 

[Wivenhoe]

Timcat- I haven’t got my car yet so can’t check it myself. When you turn off the speed limit warning do you still get the speed limits in one of the displays / HUD. I ask as in my very soon to be gone Lexus, if I turn off the warning the limits disappear as well. Hopefully the Porsche system is a bit more sensible.

 

[Timcat]

Timcat- I haven’t got my car yet so can’t check it myself. When you turn off the speed limit warning do you still get the speed limits in one of the displays / HUD. I ask as in my very soon to be gone Lexus, if I turn off the warning the limits disappear as well. Hopefully the Porsche system is a bit more sensible.

@Wivenhoe, When you turn off the speed limit warning, the actual speed limit (or what Porsche thinks it is!) remains displayed in the main display (in front of the driver), but the otherwise irritating audible warning is silenced.

 

[ColdCase]

Finally, I'm pretty certain I know of scenarios where the distance measuring and braking system is just impaired by condensation from humidity and doesn't function correctly. As I do more experiments, I'll write this up.

I think distance sensing is RADAR based so it shouldn't be affected by condensation. It may be augmented by optics to reduce false alerts. The most annoying thing about my BMW is the optical based distance measure, which drops out in the sun, rain, reflections from road signs and just on a whim. Couple that with instant regen/recoup when it drops out... good way to get rear ended... or be subjected to road rage...

Years ago there were warnings not to use things like cruise control or other driving aid in traffic as those systems were easily confused and unpredictable, just not smart enough to safely depend on. Wonderful out on the more open highway.

 

[Wivenhoe]

Thanks Timcat- good to know

 

[Yves]

While it works 99% of the time great.
I have now 2 spots where the car will abruptly try to follow a black tar mark that is not a line and would drive the car of the highway, very dangerous indeed! To be honest I experienced this with my iX as well but that seems way less now to none existent anymore …
I just cannot understand why those mechanisms try to kill people, in this case they surely know the action is borderline criminal …

 

[SteveInKirkland]

I think distance sensing is RADAR based so it shouldn't be affected by condensation. It may be augmented by optics to reduce false alerts.

I can recreate my condensation problem on many days, because it occurs when the car leaves my temperature and humidity controlled garage and is driven in a humid environment. Given the current location of the car and that the outdoors in this location is generally a high humidity environment (except during the winter), I already have a lot of experience with this failure scenario.

What I can tell you is that the condensation shutting off the safety systems is happening., regardless of whether we know said safety system is radar or camera based. How long the safety systems stay off (as the condensation clears) or whether other remedies work (the dealership has suggested wiping the front of the vehicle's sensors with a microfiber towel) is still unknown to me.

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