Toyota Prius Prime

The vehicle exhibits an unaddressed factory programming defect where the Plug-In Charge Control ECU fails to enter sleep mode while plugged in or resting. This causes continuous, heavy parasitic drain on the 12V auxiliary battery, causing chronic low-voltage state across critical systems. The 12V auxiliary network supplies power to the primary control units, CAN-bus communication modules, and dynamic stability systems. Operating under chronic low-voltage causes system instability, erratic…

My 2023 Prius Prime cannot be charged normally in hot weather without triggering a thermal-protection fault on its high-voltage charging system. Avondale Toyota diagnosed it in writing: CODE P1CE996 CHARGER COOLING FAN REVOLUTION SENSOR COMPONENT INTERNAL FAILURE. THE ELECTRIC CHARGER ASSEMBLY HAS A INTERNAL OPEN CIRCUIT CAUSING IT TO BE INOP. RECOMMEND REPLACEMENT ADD PN# G9090-47061. Quote: $2,516.99 plus ~$200 diagnostic. The vehicle cannot verify its high-voltage charger's cooling fan is…

The contact owns a 2017 Toyota Prius Prime. The contact stated that while driving at an undisclosed speed, the vehicle stalled. Several unknown warning lights were illuminated. The contact stated that while attempting to start the vehicle, the vehicle started. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact used a portable diagnostic machine to diagnosed the vehicle; however, no fault codes displayed. The contact stated that the failure had not…

Component: Driver Monitor Camera (DMC) — driver attention/drowsiness monitoring system. The Driver Monitor Camera repeatedly and incorrectly determines that the driver's eyes are closed when they are fully open and the driver is attentive and watching the road. This occurs during normal, attentive driving. When the system falsely registers eyes closed, it issues escalating visual and audible alerts that grow progressively louder. The only reliable way to silence the escalating alarm is to…

The contact owned a 2024 Toyota Prius Prime PHEV. The contact stated that while driving at 40 MPH, the vehicle was involved in a head-on collision with another vehicle that was traveling towards the contact's vehicle at approximately 50 MPH. The contact stated that during the impact, the steering wheel detached and hit the driver's body. The air bags failed to deploy. There was no warning light illuminated after the crash. The vehicle went into Crash mode and automatically connected with…

A vehicle was sold and delivered while under an active stop‑sale safety recall (manufacturer recall 26TB03). The recall was not disclosed at the time of purchase. When questions were raised about whether any recalls were present, the issue was dismissed and no recall information was provided. According to the recall documentation, the potential defect involves the rear door system possibly opening while the vehicle is in motion. Because the stop‑sale indicates the vehicle should not have been…

The contact owns a 2025 Toyota Prius PLUG-IN Hybrid. The contact stated that while driving at various speeds, the rear passenger door would open without warning. The contact then received notification of NHTSA Campaign Number: 26V049000 (ELECTRICAL SYSTEM, LATCHES/LOCKS/LINKAGES) however, the part to do the recall repair was not yet available. The local dealer was made aware of the issue and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a…

Infotainment screen failed to boot when the vehicle was turned on. Due to this failure, the rear view camera was not available when the vehicle was shifted to reverse. After backing out of the parking spot, I chose to park and restart the vehicle. The infotainment screen then proceeded to boot up and behave normally. There were no warnings or any other alerts or messages. A disabled rear view camera can impact pedestrian and vehicle safety by limiting rear vision while operating the…

In the 2017 Prius Prime when the car switches from Electric power to gas the car frequently fails to allow you to accelerate. It is like you are stuck in neutral on the freeway, taking your foot off of the acceleration pedal and pushing it down doesn't always fix the issue. The accelerator foot pedal can be completely down to the floorboard as you are losing speed. The safety issue is that you are losing speed, and on the freeway and the car doesn't recover losing some control. I have taken…

The recall (Number 26V049) is a serious safety concern, however the dealer states there is no remedy available despite a clearly described available remedy (Toyota dealers will modify the left and right rear door switch circuits FREE OF CHARGE, to prevent the switch from activating even if it is shorted.)