The vehicle has detected at least one electronic control unit (ECU) required to supplement high voltage (HV) battery heating with waste heat 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 the supplemental HV battery heating to make sure no ECU required 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)
Software update required
Schedule service
Inability to use waste heat to supplement HV battery heating may make charging at colder temperatures limited or unavailable.
The vehicle has detected at least one electronic control unit (ECU) required to supplement high voltage (HV) battery heating with waste heat 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 the supplemental HV battery heating to make sure no ECU required 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 to supplement HV battery heating with waste heat running a different firmware version than expected.
The vehicle no longer detects any ECU required to supplement HV battery heating with waste heat 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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