The National Highway Traffic Safety Administration said Monday it has closed a preliminary investigation into Fisker over complaints that its all-electric Ocean SUV rolls away unexpectedly. The U.S. safety regulator opened an investigation in February after receiving four complaints — one of which resulted in an injury — over the failure of the vehicles to shift into park.

The investigation was closed after bankrupt Fisker issued a recall of 7,745 of its all-electric SUVs and resolved the problem via a software update, according to NHTSA. The software upgrade, which was released last month, “provides additional robustness to prevent unintended vehicle movement via two major changes,” the agency said.

NHTSA’s Office of Defects Investigation still has one remaining probe focused on complaints that Fisker vehicles have problems with inadvertent emergency braking. In 2024, federal regulators opened four investigations into Fisker vehicles that included complaints of sudden loss of braking performance, multiple claims of inadvertent automatic emergency braking, rollaway risks, and problems opening doors to the vehicle.