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BMS_a118 — SW Delta SOC Weak Short Warning

Full alert identifier: BMS_a118_SW_Delta_SOC_Weak_Short_Warning

Alert description

Early warning that a given brick may be developing an alpha signal below the alert alpha threshold.

Potential impact

This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

Set condition

The computed alpha estimate for a brick is below the alert alpha threshold. The threshold comes over the Controller Area Network (CAN) via signal MCU_dSocAlertThreshold.

Clear condition

The CLEAR_SOC1_SNAPSHOT UDS StartRoutine is invoked. Also clears when the alert escalates to BMS_a117_SW_Delta_SOC_Weak_Short.

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
Brick Soc 2 BMS_a118_brickSoc2
1023
SNA
%
D Soc Alert Threshold BMS_a118_dSocAlertThreshold %
D Soc Alpha BMS_a118_dSocAlpha
4095
SNA
%
Signal Unit
Brick ID BMS_a118_brickID —

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_a118.

Browse all BMS alert codes