NHTSA recall 21V734000
A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.
| Published by | NHTSA (United States) |
|---|---|
| Campaign number | 21V734000 |
| Manufacturer's number | 21TB07 / 21TA07 |
| Manufacturer | Toyota Motor Engineering & Manufacturing |
| Reported | 2021-09-22 |
| Owners notified | 2021-11-18 |
| Component | HYBRID PROPULSION SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
| Units potentially affected | 8411 |
| Part numbers | 89981-47U40, 89981-47U30, 89981-47S90, 89981-47U50 |
| Report | Annual report 2, for 2024 quarter 4 to 2025 quarter 3 |
|---|---|
| Filed with NHTSA | 2025-10-15 |
| Vehicles in the campaign | 8411 |
| Reported remedied | 8241 (97%) |
| Reported unreachable | 82 |
| Reported removed | 9 |
These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 3, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026-10-19.
What is wrong
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.
What can happen
A loss of drive power increases the risk of a crash.
The 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.
| 2022 TOYOTA PRIUS | |
|---|---|
| 2022 TOYOTA PRIUS PRIME | Listed as a series or trim of this model. |
A vehicle with no link is not in this site's catalog, which covers cars, multipurpose vehicles and trucks by model year. The campaign is from data as of 2026-10-19.