general problems of the 2012 Toyota Prius

Five problems related to hybrid propulsion system have been reported for the 2012 Toyota Prius. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Prius based on all problems reported for the 2012 Prius.

1 Hybrid Propulsion System problem

Failure Date: 07/31/2025

The contact owns a 2012 Toyota Prius. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the check engine and the hybrid warning lights were illuminated, and the vehicle decelerated. The contact received notification of NHTSA campaign number: 18v684000 (hybrid propulsion system). The vehicle was taken to the dealer; however, the contact was informed that parts were not yet available for the recall repair. The contact was informed that the parts might be available within a week. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 137,000.

2 Hybrid Propulsion System problem

Failure Date: 08/24/2023

The contact owns a 2012 Toyota Prius. The contact stated that while his wife was driving at an undisclosed speed and attempting to accelerate, the vehicle lost motive and failed to accelerate above 30 mph. The contact stated that the hybrid system warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA campaign number: 14v053000 (hybrid propulsion system, electrical system) but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 120,000.

3 Hybrid Propulsion System problem

Failure Date: 09/02/2022

The contact owns a 2012 Toyota Prius v. The contact stated while driving approximately 65 mph, the vehicle stalled. The contact stated that the power steering and power brakes failed to operate as needed. The contact stated that the check hybrid system and check battery warning lights were illuminated. The contact pulled off the roadway safely but was unable to restart the vehicle. The contact had the vehicle towed to an independent mechanic, who diagnosed the vehicle and determined that the inverter needed to be replaced. The vehicle had not been repaired. The contact researched online and related the failure to NHTSA campaign number: 18v684000 (hybrid propulsion system). The manufacturer had not been informed of the failure. The failure mileage was approximately 247,000.

4 Hybrid Propulsion System problem

Failure Date: 02/05/2019

Tl the contact owns a 2012 Toyota Prius v. The contact stated that the hybrid warning indicator illuminated and the vehicle shook, vibrated, and stalled. The failure code was cleared by autonation Toyota south austin (4800 s ih 35 frontage rd, austin, TX 78745, (512) 518-6900) before the contact received notification of NHTSA campaign number: 18v684000 (hybrid propulsion system). The dealer repaired the vehicle. Shortly after, the contact was driving and the hybrid warning indicator illuminated and the vehicle stalled. The same dealer diagnosed that the head gasket may need to be replaced. A second dealer, charles maund Toyota (8400 research blvd, austin, TX 78758, (512) 270-5055), diagnosed that the inverter needed to be repaired. The manufacturer was not contacted. The approximate failure mileage was 200,000.

5 Hybrid Propulsion System problem

Failure Date: 09/20/2018

Tl the contact owns a 2012 Toyota Prius plug-in hybrid. While driving approximately 55 mph, the eco mode showed less fuel per mile. There was no warning indicator illuminated. The vehicle was taken to nalley Toyota of roswell (404-994-5422, located at 11130 alpharetta hwy, roswell, GA 30076) to be diagnosed, but the cause of the failure could not be determined. The contact stated that the failure began after it was repaired per NHTSA campaign number: 17v718000 (hybrid propulsion system). The manufacturer was made aware of the failure and provided case number: 1812050132. The contact was referred to NHTSA. The vehicle was not repaired. The failure mileage was approximately 105,000.


Other Hybrid Propulsion System related problems of the 2012 Toyota Prius

Hybrid Propulsion System problems
5
Hybrid Propulsion System Inverter problems
2


Prius Service Bulletins
Prius Safety Recalls
Prius Defect Investigations