FSD PSA - If CT is hugging left or right lane, recalibrate cameras

TheEther

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I've had to recalibrate at least once since late November on each new FSD code update when the CT is hugging left or right lane too much. Recalibrating makes an immediate noticeable difference in lane centering. Make certain cameras are all clean before calibration, include cleaning the vision camera area on the outside of the front windshield. Trigger camera calibrate on a no precipitation day if possible, clearly marked divided highway (so vision cameras can see multiple lanes) while keeping the CT manually lane centered until calibration completes seems to fix it. Calibration only takes about 10-15 miles in this scenario.

Side note I have a bit of off-gassing fog on my vision cameras between the plastic housing and interior windshield, you may too, ask Tesla to clean that on your next service.

Hope this helps someone.
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swinefeaster

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I dont think mine is consistently hugging any particular side. On some turns it sometimes goes over the rubble strips. Maybe just caused by a dirty side camera?
 
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TheEther

TheEther

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I dont think mine is consistently hugging any particular side. On some turns it sometimes goes over the rubble strips. Maybe just caused by a dirty side camera?
Cameras in my case are clean as a whistle. Only recalibrate fixed the going over rumble strip issue (for me)
 

webspeedracer

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I've had to recalibrate at least once since late November on each new FSD code update when the CT is hugging left or right lane too much. Recalibrating makes an immediate noticeable difference in lane centering. Make certain cameras are all clean before calibration, include cleaning the vision camera area on the outside of the front windshield. Trigger camera calibrate on a no precipitation day if possible, clearly marked divided highway (so vision cameras can see multiple lanes) while keeping the CT manually lane centered until calibration completes seems to fix it. Calibration only takes about 10-15 miles in this scenario.

Side note I have a bit of off-gassing fog on my vision cameras between the plastic housing and interior windshield, you may too, ask Tesla to clean that on your next service.

Hope this helps someone.
My CT has the left lane hugging and left-drifting issue, on the current and prior FSD builds. Oddly wasn’t an issue on the first build we received.
I was wondering if camera calibration was the cause, will have to try that when the weather clears.
 


ferrellcharles

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OMG, thank you so much! Mine has hugged the center line so bad since I got it.

I did the recalibration and now it's gone from un-usable on FSD to really really good! Perhaps it comes from the factory that way, or the first person to calibrate it was a center-line hugger LOL!

Still wish it wouldn't take off so fast on chill mode (would prefer a smooth slow acceleration on chill), but otherwise, it's pretty darn good now.
 

heems

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I had this issue back on 12.5.5 and recalibration made a big difference indeed.
 
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TheEther

TheEther

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Keep in mind recalibration doesn't seem to stick. I've recalibrated mine 3 times on 13.2.2 for hugging (but it's quick) and seems to temp correct the issue, I also suspect vision camera glass and lens cleaning may help but unconfirmed.

Cleaning instructions here, be careful with that tab!

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