IBST-A128
IBST_a128_BLMMuxerTimeoutError
Also written as IBST_A128 / IBST A128 / IBST_a128_BLMMuxerTimeoutError / ibst_a128_blmmuxertimeouterror
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does IBST-A128 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Timeout occured during BLM init tests. Not completed due to wrong preconditions. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Phase Current 2 out of range high. ECU internal fault, check wiring to the unit and or re-flash. If problem continures after several power cycles, reolace unit.
Original Description
Timeout occured during BLM init tests. Not completed due to wrong preconditions. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Phase Current 2 out of range high. ECU internal fault, check wiring to the unit and or re-flash. If problem continures after several power cycles, reolace unit.
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: Timeout occured during BLM init tests. Not completed due to wrong preconditions. ECU internal fault, check wiring to the
- No noticeable change in braking performance under normal driving
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Monitor over the next few drives
- 3 Schedule service if the alert reappears
Severity Notes
IBST-A128 is an Alert in the Integrated Brake System system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.