FSD v14.2.1 + WINTER CONDITIONS UPDATE With yet another winter storm bearing down on the Upper Midwest, I wanted to remind everyone to stay vigilant when using FSD v14.2.1, especially in snowy conditions. While this build performs far better than any previous FSD version in winter weather (thank you... Tesla AI for all the hard work!), there's a notable issue when transitioning from clear pavement to partially snow-covered surfaces—particularly during automatic lane changes at speeds >40mph. Once the lane change begins, the car starts swerving side-to-side, and the longer it continues, the more pronounced the hunting behavior becomes as it searches for drivable space. Earlier this week, I encountered this a few times during a mild snowstorm. With a lifetime of winter driving experience here in Minnesota, I decided to observe how far it would go. I was surprised that the system didn't disengage on its own, as it eventually put the car into a full slide toward the barrier, requiring my intervention. If you notice this behavior, I strongly recommend disengaging early and completing the lane change manually before re-engaging the system.show more

Dan Burkland

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