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September 22, 2021 NHTSA CAMPAIGN NUMBER: 21V734000
ECU Software May Cause Loss of Drive Power
A loss of drive power increases the risk of a crash.
NHTSA Campaign Number: 21V734
Manufacturer Toyota Motor Engineering & Manufacturing
Components HYBRID PROPULSION SYSTEM, ENGINE AND ENGINE COOLING
Potential Number of Units Affected 8,411
Summary
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022 Prius and Prius Prime vehicles. The Engine Control Unit (ECU) software may falsely detect an error and shut down the hybrid system, causing a loss of drive power.
Remedy
Dealers will update the ECU software, free of charge. Owner notification letters were mailed November 18, 2021. Owners may contact Toyota customer service at 1-800-331-4331. Toyota’s number for this recall is 21TB07/21TA07.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.