2022 Toyota Prius, 2022 Toyota Prius Prime Recall: Engine Control Unit (ECU) software may falsely detect an error and shut…
NHTSA campaign 21V734000 · Hybrid Propulsion System · filed Sep 22, 2021 · verified Jul 30, 2026
The defect
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.
The risk
A loss of drive power increases the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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.
Affected vehicles
Related recalls
More Toyota Prius recalls
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- 2023–2025 Lexus ES and 39 other models — Please see the recall report for a complete list of models
- 2024 Toyota 4RUNNER and 21 other models — Load carrying capacity modification label may display…
- 2023–2024 Toyota Prius and 1 other model — Water may enter the rear door switch and cause a short…
- 2013–2015 Toyota Prius and 1 other model — Excessive voltage in the Intelligent Power Module (IPM)…
Other campaigns involving Toyota vehicles
Source: NHTSA recall database, campaign 21V734000 (manufacturer number 21TB07 / 21TA07). Data last verified Jul 30, 2026.