Vehicle purchased late March. Since then, the 12V gets completely drained to 0% over the weekend. This is a biweekly problem. Vehicle taken to dealership, they were not able to replicate problem. Dealership claims battery and vehicle perfectly fine. 12V battery continues to get discharged. This issue puts the customer at risk of being stranded on trips. No warning lamps or symptoms before battery dies making vehicle completely inoperable. Research online and owner forums clearly show a large number of owners having the same issue with this defect with this vehicle. Contacted toyota and they denied vehicle glitch or resolution. Toyota instructed me to take car back to dealership for them to address.

I am writing to formally report an unsafe design feature regarding the automatic headlight cleaner/washer system on the 2026 Toyota bZ.The vehicle is programmed to automatically spray windshield washer fluid onto the headlights when the headlights are active and the windshield washer lever is pulled. As a night-shift worker, I frequently operate this vehicle in complete darkness. When the high-pressure fluid sprays over the active headlight lenses, it immediately diffuses the light beam. This causes the forward headlights to dim drastically, rendering them almost completely unusable for several seconds until the water clears.This sudden, unprompted loss of forward visibility at highway speeds creates an immediate and severe driving hazard.Proposed Remedy Request:There is currently no setting available to the driver to turn off or modify this linked behavior. I request that Toyota issue a software update allowing owners an menu option to disable the automatic, windshield-linked headlight washing function so drivers can maintain constant headlight visibility at night.

The 12V battery in my 2026 Toyota bZ unexpectedly went dead, leaving the vehicle completely unresponsive. The vehicle could not be powered on or driven. There was no prior warning. Upon google search, there are several posts on websites like reddit and toyota owner forums with reports of the same exact issue.

Instrument cluster failed to turn on once car is turned on. Speedometer does not display and the electric charge does not display.

New car, only 800 miles, 12V battery drained and is dead. Needed to be replaced. Internal process draining battery. Multiple similar complaints online