VCBATT_a561 — LVBMS eFuse Overtemperature
Full alert identifier: VCBATT_a561_LVBMSEFuseOvertemperature
Alert description
The Low Voltage Battery Management System (LVBMS) detects high temperature at the low voltage (LV) battery MOSFET (internal protection transistor).
Potential impact
The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
Set condition
The LVBMS MOSFET temperature has reached 100 deg C for 1 second.
Clear condition
The LVBMS is no longer reporting high MOSFET temperature.
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 |
|---|---|
Ambient Temperature
VCBATT_
|
C |
Cell 1 Voltage
VCBATT_
|
V |
Cell 2 Voltage
VCBATT_
|
V |
Cell 3 Voltage
VCBATT_
|
V |
Cell 4 Voltage
VCBATT_
|
V |
Efuse Temperature
VCBATT_
|
C |
Pack Temperature
VCBATT_
|
C |
| Signal | Unit |
|---|---|
Factory Mode
VCBATT_
|
— |
Frunk Open
VCBATT_
|
— |
Service Mode
VCBATT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCBATT_a561.