Well I tried to find where that quote came from:
- In the LA times article you linked to: nope.
- I searched the Internet for it: not found.
- I checked the NHTSA web site: No list of that investigation.
- In the Electrek article you linked to: There it is.
And as usual it appears to be bad reporting by Fred. He makes that claim and then quotes the source that actually says: the NHTSA is "well aware of the reports regarding this issue and will take action if appropriate based upon the facts and data." You would think if it was true the LA Times would have said that themselves.
So we will have to watch to find out if Fred is right or if he just misinterpreted what NHTSA said. (Which he seems to misinterpret things fairly frequently.)