If you drive a Prius from the past several years, there’s a distinct chance you’ll have to take it in for service. Autoblog reports that Toyota has begun a safety recall for 752,000 of the vehicles worldwide, 267,000 of them in the US, due to a flaw in the hybrid software for 2013-2015 standard Prius cars and 2014-2017 Prius V models. The machines won’t kick into a failsafe mode “in rare situations” if the hybrid system fails, forcing the gas engine to lose power and stall — a significant problem if you’re on the highway.

The fix will involve a free software update at the dealership, plus an inverter fix if that component failed as a result of the glitch. Drivers will be notified by late August.

The automaker initially discovered the flaw in South Korea in March, when a car refused to stop. A spokespersoni told Consumer Reports the issue was “extremely rare” and required investigation to determine if a recall was necessary. No one was hurt, Hyundai said.

Hyundai’s recall comes months after concerns about the safety of Tesla’s Smart Summon. While the features are different in significant ways, they both serve as reminders that smart parking is still in its relative infancy. It could be a while before you can simply assume your car will park itself with very little intervention.