BMS family
BMS_w132_HW_BMB_OTP_Uncorrctbl
Vehicle shutting down
What does the BMS_w132_HW_BMB_OTP_Uncorrctbl alert mean?
An uncorrectable error has been detected in the OTP-EPROM register bank for a battery monitoring board (BMB).
What you'll see in your Tesla
- Vehicle shutting down
- PULL OVER SAFELY
What triggers it
A BMB TI536 ASIC chip has set the ECC_ERR bit in the ALERT_STATUS register.
When it clears
The BMBs have been reset and the ECC_ERR bit in all ALERT_STATUS registers is clear.
Potential impact
OTP register(s) are not valid. The BMS will attempt to reset all of the TI536 ASICs and reenumerate them.
Affected models
Model S 2012-2020
Model X 2015-2020
Track your Tesla's alerts automatically
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.