BMS_w132_HW_BMB_OTP_Uncorrctbl

An uncorrectable error has been detected in the OTP-EPROM register bank for a battery monitoring board (BMB).

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Vehicle shutting down
PULL OVER SAFELY

Impact

OTP register(s) are not valid. The BMS will attempt to reset all of the TI536 ASICs and reenumerate them.

Description

An uncorrectable error has been detected in the OTP-EPROM register bank for a battery monitoring board (BMB).

Cause

A BMB TI536 ASIC chip has set the ECC_ERR bit in the ALERT_STATUS register.

Clear condition

The BMBs have been reset and the ECC_ERR bit in all ALERT_STATUS registers is clear.

Models

Model S 2012-2020, Model X 2015-2020

Visibility

customer, service-fix

Want to track your firmware alerts, trips and more?

Sign up for Tessie. Try it free for 14 days. Happiness guaranteed.