VCLEFT_a370 — No LV Support Soc Too Low

Full alert identifier: VCLEFT_a370_noLVSupportSocTooLow

Alert description

The high voltage (HV) battery state of charge (SOC) is not sufficient to complete a low voltage (LV) battery recharge cycle. The LV battery may become completely discharged, and the vehicle electrical system may have inadequate support.

Potential impact

The LV battery may become completely discharged and unrecoverable, requiring replacement. It may be necessary to shed some vehicle electrical loads by cutting power to less essential electronic control units (ECUs), with another alert present to indicate that condition. Vehicle may be unable to drive or continue driving, with another alert present to indicate that condition.

Set condition

The LV battery needs to be recharged, but the high voltage battery management system (BMS) reports the HV battery does not have sufficient SOC (enough energy) to charge (support) the LV battery.

Clear condition

The HV BMS reports that the HV battery has sufficient SOC (enough energy) to charge (support) the LV battery.

Signals to check

These diagnostic fields are associated with VCLEFT_a370. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
IBS Ah `VCLEFT_a370_IBSAh`	Ah
IBS Volts `VCLEFT_a370_IBSVolts`	V
Soc `VCLEFT_a370_SOC` 7 SNA	PCT
Not Enough Power For Support `VCLEFT_a370_notEnoughPowerForSupport`	—
Service Mode `VCLEFT_a370_serviceMode`	—
Sleep Current `VCLEFT_a370_sleepCurrent`	A

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCLEFT_a370.