IBST-A148
IBST_a148_MLIGainMechReadFault
Also written as IBST_A148 / IBST A148 / IBST_a148_MLIGainMechReadFault / ibst_a148_mligainmechreadfault
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-A148 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Read failed failure for parameter gain_mech Missing BIST trigger didn't swicth off hy. or electrically as expected. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. CANSys - BusOff Failure on Can 2 (chassis CAN) Motor is temporarily unavailable due to reinitialization of bridge driver. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. iBooster was not shutdown right
Original Description
Read failed failure for parameter gain_mech Missing BIST trigger didn't swicth off hy. or electrically as expected. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. CANSys - BusOff Failure on Can 2 (chassis CAN) Motor is temporarily unavailable due to reinitialization of bridge driver. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. iBooster was not shutdown right
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: Read failed failure for parameter gain_mech Missing BIST trigger didn't swicth off hy. or electrically as expected. ECU
- 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-A148 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.