There are 2 stored owner reports matching the driver assist & adas leading-label group for the 2021 Toyota Prius Prime in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)The contact owns a 2021 Toyota Prius Prime. The contact stated that while shifted into reverse(R), the rearview camera intermittently went black. No warning light was illuminated. In addition, the contact stated that while driving at various speeds, the rearview camera intermittently went black. The local dealer was contacted. The vehicle was not diagnosed or repaired. Upon further investigation, the contact related the failure to an unknown NHTSA Campaign; however, the VIN was not under recall. The manufacturer was made aware of the failure. The failure mileage was approximately 27,696.
My vehicle is equipped with Toyota Safety Sense, which includes Full-Speed Range Dynamic Radar Cruise Control (DRCC) and a Pre-Collision System. Today, while driving with DRCC engaged, my vehicle followed a leading car and appropriately slowed down to 2 mph as we approached a signalized intersection. However, when the leading vehicle changed lanes, a gap was created between me and a new lead vehicle, which was fully stopped. Despite this, the DRCC system accelerated to 5mph and collided with the stopped vehicle.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 29, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.