VCLEFT_a544_LVBatteryCommsBusTurnedOff
Low voltage (LV) battery communication disabled
What does the VCLEFT_a544_LVBatteryCommsBusTurnedOff alert mean?
The vehicle controller has disabled communications over the bus that connects to the low voltage (LV) battery after detecting a condition (or conditions) that may cause the LV battery to become overdischarged. To avoid overdischarge that could make the LV battery unrecoverable, do not restore communications until the LV system is fully supported by the Power Conversion System (PCS).
What you'll see in your Tesla
- Low voltage (LV) battery communication disabled
- Low LV battery state of charge - Preserving energy
What triggers it
The vehicle controller detects the LV battery may become overdischarged unless it sleeps, and also determines vehicle conditions are OK to disable LV battery communications.
When it clears
Clears upon any of the following: (1) The RECONNECT-LV-BATTERY routine is run from the vehicle touchscreen in Service Mode or via Toolbox; (2) A vehicle power cycle is completed; (3) Vehicle firmware install is initiated; (4) The vehicle is no longer in Service Mode.
Potential impact
The vehicle controller will have less information about the LV battery until it is serviced. Headlamps and windshield wipers may be unavailable, or may not function as expected.
Affected models
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