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Sudden EV Power Loss – Toyota BZ, Lexus RZ, Subaru Solterra Recalled
Toyota Motor Engineering & Manufacturing (NYSE: TM, 7203T) is recalling ~21,000 model-year 2026 Toyota BZ, Lexus RZ, and Subaru Solterra battery electric vehicles. The Denso-supplied electronic control unit (Battery ECU) that controls the high-voltage battery may experience a fault, resulting in a sudden loss of drive power.
“Toyota observed certain diagnostic data during development testing of a new Plug-in Hybrid Electric Vehicle (PHEV) model. After investigation, Toyota found that the memory in the battery ECU can fail an operation check because a part of the memory address location utilized by the battery control IC overlaps with a part utilized by the monitoring IC. The monitoring IC could repeatedly overwrite data at the same memory address used by the battery control IC when the memory operational check cycle matches the monitoring IC’s write operation cycle,” Toyota said in the mandatory safety defect recall filling made published by the National Highway Traffic Safety Administration (NHTSA) this morning. Continue reading →