2026 Toyota Bz

There is a foul smell emanating from the window areas of the vehicle after rain. The more rain, the more pronounced the odor. It smells similar to cat urine. I have been able to reproduce it many times, after it rains. I was reading online that the smell is caused by mold/mildew which is a huge safety concern. I had also read that this is somewhat of a common issue caused by the type of weatherstripping in use on the vehicle. When I called the dealership they were unaware of any issues concerning an odor around the windows after rain. I will continue to work with the dealership, but this should at least be a Technical Service Bulletin.

Vehicle experienced a catastrophic, terminal 12V auxiliary battery parasitic drain that flatlines the system to 0% while parked, creating a severe safety risk by stripping hazard lights and motive power. This is the 3rd identical electrical collapse within 4 weeks; a late June 12V battery replacement failed. The vehicle was in active daily use, not stored.Held out of service at Kings Toyota since July 6, 2026 (26+ days down). Technicians dismantled the cabin and placed the dashboard in the trunk to trace loops. Management confirmed hardware nonconformities in the Data Communication Module (DCM) and Body Control Module (BCM), which fail to enter sleep mode. Observable proof includes continuous, erroneous telemetry alerts stating windows are down/doors unlocked while fully locked and disassembled in the bay.Modules are on indefinite global backorder due to an inherent manufacturing defect. Parts are restricted likely to feed production and the mass rollout for NHTSA Campaign 26V393.DIAGNOSTIC DETAILS:Local tech efforts are directly guided by Toyota Corporate factory engineers who designed the vehicle, as local techs have never encountered this severe issue.Multiple other identical units are grounded on the dealer lot with identical 12V flatline failures.My vehicle (#XXX) is being used instructively by Toyota Corporate to advance understanding and map out repairs for the other units.To capture evading data, I complied with a request to delete the Toyota app from my iPhone so lead tech [XXX] could intercept these failing module notifications to aid factory engineers.Management confirmed that by design, if the 12V drops below 11V, the high-voltage motive battery is supposed to automatically recharge it. Here, the vehicle fails to initiate the loop, or the motive batteries enter a defensive "protective lockout mode," cutting power transfer and flatlining the car. This could contribute to motive battery failure /lockout if the defect continues to draw 12V battery down. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INF

What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle experienced a failure of the high-voltage battery control system (Battery ECU / main battery control module), resulting in loss of propulsion. The vehicle is currently at an authorized Toyota dealership and is available for inspection upon request. How was your safety or the safety of others put at risk? The vehicle shut down while driving, causing an unexpected loss of power and propulsion. This created a dangerous situation due to the inability to safely maintain speed or maneuver in traffic, increasing the risk of a collision or death. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. An authorized Toyota dealership diagnosed the issue and confirmed that the Battery ECU / main battery control module required replacement. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle has been inspected by an authorized Toyota dealership. The repair and replacement of the Battery ECU was authorized through Toyota’s service process. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning signs prior to the failure. The shutdown occurred suddenly while driving. Warning messages and service alerts appeared after following the failure.