On Monday, Musk tweeted saying that Full Self-Driving (FSD) Beta 9.2 is "not great [in my opinion]." Tesla's team is working to improve it, he added.
ThenFull Self-Driving beta is only available to some Tesla customers. The FSD system is sold as a package for $10,000 or $199 a month in the U.S.
"We are trying to have a single stack for both highway and city streets, but it requires massive NN retraining," Musk said, in a tweet.
The tweet comes after National Highway Traffic Safety Administration (NHTSA) placed Tesla’s Autopilot system--which is the basic version of FSD and is a standard part of a Tesla--under investigation.
On Aug. 16, the agency identified 11 crashes, one fatality, and 17 injuries since January 2018. The probe covers an estimated 765,000 vehicles.
"Most incidents took place after dark and the crash scenes encountered included scene control measures such as first responder vehicle lights, flares, an illuminated arrow board, and road cones. The involved subject vehicles were all confirmed to have been engaged in either Autopilot or Traffic-Aware Cruise Control during the approach to the crashes," the NHTSA said in a statement.