IBST-D004
IBST_d004_deadlMonTaskx1Ovr
Also written as IBST_D004 / IBST D004 / IBST_d004_deadlMonTaskx1Ovr / ibst_d004_deadlmontaskx1ovr
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-D004 mean?
Tesla diagnostic code in the Integrated Brake System (IBST) module. Runtime overload: Task critical to IO runtime (x1 Task) exceeded the deadline. The monitoring checks for the real execution time of critical processes in the IO critical task (x1 Task) versus the ideal start time with an allowed jitter (5% for non-iBooster Systems, 10% for iBooster Systems). The jitter limit of the restricted part is not held (x1 task). Possible causes of this include higher priority tasks taking longer, longer runtime in ISR, and X1 task being overloaded.
Original Description
Runtime overload: Task critical to IO runtime (x1 Task) exceeded the deadline. The monitoring checks for the real execution time of critical processes in the IO critical task (x1 Task) versus the ideal start time with an allowed jitter (5% for non-iBooster Systems, 10% for iBooster Systems). The jitter limit of the restricted part is not held (x1 task). Possible causes of this include higher priority tasks taking longer, longer runtime in ISR, and X1 task being overloaded.
Affected Tesla Models
What You May Notice
- Integrated Brake System alert: Runtime overload: Task critical to IO runtime (x1 Task) exceeded the deadline. The monitoring checks for the real execut
- 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-D004 is a diagnostic or informational code in the Integrated Brake System system. Typically no immediate action is required.