FSD Disengages on dark highway

[jimknappusa]

On my return trip at night on a very dark mountain highway, I got the message to take control of the car immediately even though I had my hands on the yoke, eyes on the road and doing speed limit+5. I ended the trip and re-engaged several times without any success. I have v12(2024.14.9) installed. During daylight hours, it works like a champ. Any suggestions?

 

[DerbyDave]

If it can't see enough, it will disable. See what the specific disablement warning is by clicking the Red triangle with Exclamation mark inside on the top of the screen when it disengages. They will likely makes things better, but mine disables sometimes during downpours. I haven't used FSD on dark back county one lane roads with no lines, but I bet it wouldn't work there either.

 

[jjrandorin]

On my return trip at night on a very dark mountain highway

Any suggestions?

Not use FSD on a "very dark mountain highway"?

 

[cbdream99]

Pull over and wait till the Sun comes out

 

[Yelobird]

Sounds like at some point that drive you received a warning which turned into a strike which would lock it out for the entire drive as noted. If you look at the FSD screen it will likely say one strike of…. I have driven many unlit roads and never had an issue and was surprised how well it still worked.

 

[fholbert]

On my return trip at night on a very dark mountain highway, I got the message to take control of the car immediately even though I had my hands on the yoke, eyes on the road and doing speed limit+5. I ended the trip and re-engaged several times without any success. I have v12(2024.14.9) installed. During daylight hours, it works like a champ. Any suggestions?

I think the FSD disconnect is more a result of poorly marked or faded lane markers than a dark road.

If the cameras could clearly see reflective paint lane markers I suspect FSD wouldn’t have had an issue.