Tesla has launched a legal challenge against the California Department of Motor Vehicles in efforts to reverse an agency decision. The state DMV determined that Tesla engaged in misleading advertising to exaggerate the automated driving features of its vehicles, thus infringing state legislation.

The lawsuit brings back a concern that seemed to have been settled last week when the DMV announced it would not revoke Tesla’s sales and manufacturing licenses for a period of 30 days. This decision was based on the EV manufacturer adhering to the ruling and ceasing the use of the term “Autopilot” in its marketing efforts within California. CNBC was the first to cover the lawsuit.

The DMV had the option to take measures against Tesla. It decided against it, even though an administrative law judge supported the DMV’s proposal to suspend Tesla’s licenses for 30 days as a punishment. Instead of revoking its licenses, the state authority allowed Tesla 60 days to comply.

And Tesla complied, albeit in very drastic ways. Tesla didn’t merely stop using the term Autopilot; in January, it entirely phased out Autopilot within the U.S. and Canada. It’s possible that they now regret that choice and are seeking a means to reintroduce it.