Toyota Prius, Prius Prime: Powertrain

Affects Toyota Prius, Prius Prime · 2022 — about 1K vehicles.

The hazard

Issue: On certain vehicles, a software problem with the hybrid vehicle electronic control unit (ECU) could cause the hybrid system to turn off if the shifter position is changed while driving. This could result in a loss of power to the wheels. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: Toyota will notify owners by mail and instruct you to take your vehicle to a dealer to update the hybrid vehicle ECU software.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational