Tesla’s Full Self-Driving software lived up to its “beta” label this weekend.
On Saturday morning, Tesla CEO Elon Musk announced a delay for the 10.3 update after internal quality-assurance testers discovered that the new version performed worse at left turns at traffic lights than previous versions. Then, on Sunday afternoon, Musk said that Tesla would be “rolling back to 10.2 temporarily” after reports of sudden braking, false warnings, and other issues.
Several owners reported that their vehicles braked suddenly when the software mistakenly reported an imminent collision. Known as automatic emergency braking (or AEB), neither the feature nor its bugs are limited to Tesla—Mazda recalled some of its cars in 2019 for similar problems.