Tesla rolled back the latest beta version of its full self-driving software on Sunday.
It was less than a day after its release.
Users had complained of false collision warnings and other issues.
In some video posts on social media, users said vehicles with the latest update repeatedly provided Forward Collision Warnings, when there was no immediate danger.
Others said vehicles also automatically applied brakes for no reason.
Some users said they lost the FSD beta software entirely after having issues with the update.
Tesla CEO Elon Musk said on Twitter, "Please note, this is to be expected with beta software. It is impossible to test all hardware configs in all conditions with internal quality assurance, hence public beta."
Musk also said fixes were in the works.
But it's not immediately clear if there's a new date for the release.
U.S. federal regulators are increasingly scrutinizing Tesla and its self-driving tech.
The National Highway Traffic Safety Administration is probing Tesla's Autopilot system in three-quarters of a million U.S. vehicles after a series of crashes.