VCBATT1_a559 — LV Battery Low SOC
Full alert identifier: VCBATT1_a559_LVBatteryLowSOC
Alert description
The low voltage battery management system (LVBMS) reports the low voltage (LV) battery has a reduced state of charge (SOC), which may lead to the LVBMS opening the LV battery internal protection transistor (MOSFET).
Potential impact
The LV battery may be unable to support vehicle electrical systems.
Set condition
The LVBMS detects the LV battery SOC is below 15% for 5 seconds.
Clear condition
The LVBMS detects the LV battery SOC is above 20%.
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
Pack Current
VCBATT1_
|
A |
Soc
VCBATT1_
|
% |
| Signal | Unit |
|---|---|
Bms mia
VCBATT1_
|
— |
HV Blocking Mismatch
VCBATT1_
|
— |
Hv up
VCBATT1_
|
— |
Pcs mia
VCBATT1_
|
— |
Battery SM State
VCBATT1_
|
— |
Bms State
VCBATT1_
|
— |
Contactor E Fuse Stable
VCBATT1_
|
— |
Crash Detected
VCBATT1_
|
— |
Show 10 more fields
| Signal | Unit |
|---|---|
Dcdc LV Support Status
VCBATT1_
|
— |
Factory Mode
VCBATT1_
|
— |
Frunk Open
VCBATT1_
|
— |
Hvc E Fuse Stable
VCBATT1_
|
— |
Not Enough Power For Support
VCBATT1_
|
— |
Pcs E Fuse Stable
VCBATT1_
|
— |
Service Mode
VCBATT1_
|
— |
Transport Mode
VCBATT1_
|
— |
Vcright E Fuse Stable
VCBATT1_
|
— |
Vehicle Power State
VCBATT1_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCBATT1_a559.