2009 Toyota Prius Forward collision avoidance Problems
- Complaints
- 5about this part
- Share
- 1%of 502 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the forward collision avoidance of the 2009 Toyota Prius, 1% of the 502 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Brake actuator is broken. Toyota knew about this problem and they had a warranty for 10 years or 150k miles. Mine only has 80k miles. The repair is half of what the car is worth. I thought a Toyota with such low miles would be dependable. Toyota knew that people have died from this problem with their car. I need this car to get to work and get my kids to school. It’s older than 10 years so I am just screwed on something they knew was broken. Of course the sales person at the Toyota dealership did not tell us about it when he sold us the car”
NHTSA complaint #11733751, filed 2026-04“The engine light went on while driving on the highway. We immediately pulled over and had the vehicle towed to the nearest dealership. The dealership informed us that both the Brake Actuator (Toyota part TO44500-47141) and water pump (Toyota par TOG9020-47031) had failed. The car was no longer save to drive.”
NHTSA complaint #11618991, filed 2024-10“In the 2009 Toyota Series II vehicle there are two parts for the brake actuator pump assembly which has been cycling about every 20 seconds for the past six months or more. There is an intermittent tone when depressing the brake pedal before starting the car (engine off). The Brake dash warning light is on continuously. Occasional loss of brake power in reverse causing the driver to re-apply the brakes to stop unwanted motion of the vehicle.”
NHTSA complaint #11629033, filed 2024-12“Dashboard Warning Lights: ABS, VSC, Parking Brake Light, Triangle with Exclamation Point, Codes: C1256 & C1391, Intermittent Audible Cabin Buzzing indicating critical pressure loss on start-up for about 10 seconds...then stops, not loss so much as anti-braking quick bursts at about 5 mph of stopping v slowly and seamlessly coming to a stop. I contacted Toyota Corporate Case Management; they refused to escalate or remediate the issue due to vehicle mileage, despite being notified of the active brake pressure leak codes and the audible safety alarm.”
NHTSA complaint #11744740, filed 2026-06Forward collision avoidance: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 19% |
| 2023 | 1 | 5% |
| 2021 | 1 | 17% |
| 2020 | 1 | 7% |
| 2019 | 4 | 13% |
| 2018 | 1 | 3% |
| 2017 | 1 | 1% |
| 2016 | 2 | 1% |
| 2015 | 7 | 4% |
| 2014 | 6 | 3% |
| 2013 | 12 | 3% |
| 2012 | 3 | 1% |
| 2011 | 5 | 1% |
| 2010 | 18 | 1% |
| 2009 | 5 | 1% |
| 2008 | 3 | 0% |
| 2007 | 1 | 0% |
| 2006 | 1 | 0% |
| 2004 | 1 | 0% |
Other parts of the 2009 Toyota Prius
199 complaintsExterior lighting
111 complaintsVehicle speed control
71 complaintsElectrical system
60 complaintsOther or unknown
36 complaintsFuel system
24 complaintsTransmission and drivetrain
22 complaintsEngine
19 complaintsBody and structure
19 complaintsAir bags
17 complaintsSteering
13 complaintsElectronic stability control
12 complaints
← All problems reported for the 2009 Toyota Prius
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology