BMS family
BMS_u029_dSoc_Limiting
Maximum battery charge level reduced
What does the BMS_u029_dSoc_Limiting alert mean?
There is condition internal to the high voltage (HV) battery requiring the battery management system (BMS) to limit the maximum allowed brick voltage.
What you'll see in your Tesla
- Maximum battery charge level reduced
- OK to drive - Schedule service
What triggers it
BMS_w117_SW_Delta_SOC_Weak_Short is set and MCU_dSocAlertEnable=1 and BMS_a117_silentLimiting=1.
When it clears
BMS_w117_SW_Delta_SOC_Weak_Short is clear or MCU_dSocAlertEnable=0.
Potential impact
The target max brick voltage for charge is limited to the voltage corresponding to 50% state of charge (SOC).
Affected models
Model S 2012-2020
Model X 2015-2020
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Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.