IBST-A099
IBST_a099_bridgeSwitchInitError
Also written as IBST_A099 / IBST A099 / IBST_a099_bridgeSwitchInitError / ibst_a099_bridgeswitchiniterror
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-A099 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Failure in Bridge Driver Supply Switch MOSFET. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. An ADC register Bit flipped or is stucked. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. RPS raw signals (sine and cosine): vector length too high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Fault in the ADC peripheral detected. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit.
Original Description
Failure in Bridge Driver Supply Switch MOSFET. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. An ADC register Bit flipped or is stucked. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. RPS raw signals (sine and cosine): vector length too high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. Fault in the ADC peripheral detected. 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: Failure in Bridge Driver Supply Switch MOSFET. ECU internal fault, check wiring to the unit and/or re-flash. If problem
- 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-A099 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.