IBST-A109
IBST_a109_LiPS2PwmTransmission
Also written as IBST_A109 / IBST A109 / IBST_a109_LiPS2PwmTransmission / ibst_a109_lips2pwmtransmission
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-A109 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Linear Position Sensor Channel 2 Duty or period is out of range System ASIC CLKIN failure is detected. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit.
Original Description
Linear Position Sensor Channel 2 Duty or period is out of range System ASIC CLKIN failure is 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: Linear Position Sensor Channel 2 Duty or period is out of range System ASIC CLKIN failure is detected. ECU internal faul
- 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-A109 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.