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Tesla’s camera-based, radar-less autonomous driving system, dubbed Tesla Vision, is continuously improving with every new software update, it seems. Model Y owner Kevin Smith has been monitoring system operation under heavy rain for several months now and has reported only positive feedback on the latest update.
For reference, Tesla Vision is the system used to operate the autopilot and FSD on the Model 3 and Model Y since May 2021. As noted above, it only uses cameras to operate and does not feature radar technology. Eventually, Tesla also plans to implement Tesla Vision on the Model S and Model X.
Smith, who can be found on Twitter under the username @spleck, explained that the system originally reduced the speed of the vehicle too much in difficult conditions and was overtly cautious. Particularly troublesome was software version 2021.4.18.1 (released in June), with the vehicle slowing at uncomfortable rates during heavy rainfall. The excuse the system continued to give was “Limited speed for visibility”. He even kicked Smith off autopilot altogether at one point due to bad weather conditions.
In July, version 201.4.18.10 was released and it continued to cause problems. Although Smith was no longer kicked off autopilot in the pouring rain, there were still significant drops in speed. Interestingly, Smith noted that the speed reductions were more extreme in “moderate rain”.
However, the August 2021.4.21.3 release appears to have fixed all of the above issues. Smith finds that the car now drives a lot more confidently with the autopilot engaged in rain. Drastic speed decreases and random autopilot disabling are no longer issues. It certainly looks like the system is getting better and better as more and more driver data is collected.
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