Engine control module (ecu/ecm): software
Risk. A loss of drive power increases the risk of a crash.
NHTSA has logged 8 owner complaints about the 2022 Toyota Prius Prime, most often about the forward collision avoidance. It is covered by 1 safety recall, and for recall 21V-734 the manufacturer reports only 96% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through June 25, 2024. Updated daily. Photo: SsmIntrigue, CC BY-SA 4.0.
8 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Forward collision avoidance | 2 | 1 |
| Vehicle speed control | 2 | 0 |
| Fuel/propulsion system | 1 | 1 |
| Electrical system | 1 | 1 |
| Service brakes | 1 | 1 |
| Steering | 1 | 0 |
| Hybrid propulsion system | 1 | 0 |
| Engine and engine cooling | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. A loss of drive power increases the risk of a crash.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Toyota.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Prius Prime median. How we score
2022 Toyota PRIUS PRIME 5 HB FWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.



Federal investigations that included the 2022 Toyota Prius Prime, and the recalls they led to.
Recent forward collision avoidance complaints filed with NHTSA, shortened. Personal details are removed.
When adaptive cruise control is engaged and a car cuts in front of you the car will accelerate rapidly at first nearly hitting the car before it slows.
The vehicle went into drive from neutral after being placed on a moving track (car wash). The forward collision system activated and the automatic brake deployed when the vehicle sensed moving parts in the car wash. From there, the car automatically went out of neutral and into drive with no action…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.