IBST-A046
IBST_a046_WdhAsicWdErrorCntLimit
Also written as IBST_A046 / IBST A046 / IBST_a046_WdhAsicWdErrorCntLimit / ibst_a046_wdhasicwderrorcntlimit
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-A046 mean?
Tesla alert code in the Integrated Brake System (IBST) module. Number of faulty watchdog trigger pattern too high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. iBooster and Power Pack are mismatch
Original Description
Number of faulty watchdog trigger pattern too high. ECU internal fault, check wiring to the unit and/or re-flash. If problem continures after several power cycles, reolace unit. iBooster and Power Pack are mismatch
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: Number of faulty watchdog trigger pattern too high. ECU internal fault, check wiring to the unit and/or re-flash. If pro
- 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-A046 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.