The vehicle has detected at least one electronic control unit (ECU) required for high voltage (HV) system operation running a firmware (software) version that may not be compatible with the firmware installed on the rest of the vehicle. When this occurs, the vehicle controller blocks HV battery contactors from closing and HV system from becoming active to make sure no ECU required for HV system operation is limited or unavailable due to firmware. May occur after an unsuccessful or incomplete firmware update, and may be resolved through a successful firmware update.
<0.01% (Extremely rare)
Unable to charge
Incompatible software versions
Vehicle is unable to drive, charge, or support the low voltage electrical system until the firmware version mismatch is resolved, to make sure no vehicle functionality required for HV system operation is limited or unavailable due to firmware.
The vehicle has detected at least one electronic control unit (ECU) required for high voltage (HV) system operation running a firmware (software) version that may not be compatible with the firmware installed on the rest of the vehicle. When this occurs, the vehicle controller blocks HV battery contactors from closing and HV system from becoming active to make sure no ECU required for HV system operation is limited or unavailable due to firmware. May occur after an unsuccessful or incomplete firmware update, and may be resolved through a successful firmware update.
The vehicle detects at least one ECU required for HV system operation running a different firmware version than expected.
The vehicle no longer detects any ECU required for HV system operation running a different firmware version than expected.
Cybertruck, Model 3 2017-2023, Model 3 2024+, Model S 2021+, Model X 2021+, Model Y, Model Y 2025+
customer, service-fix
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