Low Voltage (LV) bus load reduction activated due to inability to precharge the High Voltage (HV) bus.
<0.01% (Extremely rare)
None displayed
The Autopilot Electronic Control Unit (ECU), Media Control Unit (MCU), headlight, and sleep bypass LV power feeds are powered off (eFuses gating these power feeds are opened to reduce LV bus load).
Low Voltage (LV) bus load reduction activated due to inability to precharge the High Voltage (HV) bus.
The vehicle controller detects HV bus precharge is unsuccessful due to low LV Bus voltage.
HV bus precharge succeeds or LV bus load reduction times out.
Model 3 2017-2023, Model 3 2024+, Model Y, Model Y 2025+
service
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