| Recurring |
one_organization |
(a) The software failure incident having happened again at one_organization:
In this case, Toyota issued voluntary recalls for the Tundra pickup and BZ4X EV due to safety concerns related to potential defects in the vehicles. The BZ4X recall involved a serious issue where hub bolts on the wheel could loosen, leading to the wheel detaching from the vehicle after low-mileage use. This indicates a potential software failure or defect in the design or manufacturing process of the vehicles [129583].
(b) The software failure incident having happened again at multiple_organization:
There is no information in the provided article indicating that a similar software failure incident has occurred at other organizations or with their products and services. |
| Phase (Design/Operation) |
design, operation |
(a) The software failure incident related to the design phase is evident in the article. Toyota issued voluntary recalls for the Tundra pickup and BZ4X EV due to specific design flaws in the vehicles. The Tundra recall was related to rear axle nuts that could loosen over time, affecting vehicle stability and brake performance, potentially leading to a crash. On the other hand, the BZ4X recall involved hub bolts on the wheel that could loosen after low-mileage use, causing the wheel to detach from the vehicle. These design flaws highlight failures introduced during the system development or updates of the vehicles [Article 129583].
(b) The software failure incident related to the operation phase is also apparent in the articles. Toyota urged BZ4X owners not to drive their cars until the recall work is completed due to the serious risk of the wheel detaching from the vehicle. This precaution indicates that the failure was due to contributing factors introduced by the operation or potential misuse of the affected vehicles [Article 129583]. |
| Boundary (Internal/External) |
within_system |
(a) within_system: The software failure incident related to the Toyota recalls for the Tundra pickup and BZ4X EV is primarily within the system. The recalls were issued due to internal issues within the vehicles themselves, such as rear axle nuts loosening in the Tundra pickup and hub bolts on the wheel loosening in the BZ4X EV. These internal mechanical issues could lead to serious safety risks, including affecting vehicle stability, brake performance, and even the detachment of the wheel from the vehicle [129583]. |
| Nature (Human/Non-human) |
non-human_actions, unknown |
(a) The software failure incident related to non-human actions is the recall of the 2023 BZ4X electric SUV by Toyota. The article mentions that after low-mileage use, all of the hub bolts on the wheel can loosen to the point where the wheel can detach from the vehicle, indicating a mechanical or design issue rather than a human error [Article 129583].
(b) The software failure incident related to human actions is not explicitly mentioned in the provided article. |
| Dimension (Hardware/Software) |
hardware |
(a) The software failure incident occurring due to hardware:
- The article mentions a hardware-related issue with the 2022 Tundra pickup, specifically concerning rear axle nuts that can loosen over time and potentially fall off, affecting vehicle stability and brake performance [Article 129583].
(b) The software failure incident occurring due to software:
- The article does not mention any software-related issues contributing to the recalls. |
| Objective (Malicious/Non-malicious) |
unknown |
The articles do not mention any software failure incident related to a malicious or non-malicious objective. Therefore, it is unknown whether the software failure incident was due to malicious or non-malicious factors. |
| Intent (Poor/Accidental Decisions) |
unknown |
The articles do not mention any software failure incident related to poor_decisions or accidental_decisions. |
| Capability (Incompetence/Accidental) |
accidental |
(a) The articles do not mention any software failure incident related to development incompetence.
(b) The software failure incident related to accidental factors is the recall of the 2023 BZ4X electric SUV by Toyota. The recall involves a serious issue where after low-mileage use, all of the hub bolts on the wheel can loosen to the point where the wheel can detach from the vehicle. This issue poses a significant safety risk, leading Toyota to advise owners not to drive the affected vehicles until a fix is performed. The article does not specify the exact cause of this issue, but it is described as a serious problem that needs to be addressed promptly [129583]. |
| Duration |
unknown |
The articles do not mention any software failure incident related to the Toyota recalls for the Tundra pickup and BZ4X EV. Therefore, the duration of the software failure incident is unknown. |
| Behaviour |
crash, omission, other |
(a) crash: The article mentions a potential crash risk related to the Tundra recall. It states, "If complete separation occurs, this can affect vehicle stability and brake performance, increasing the risk of a crash" [Article 129583].
(b) omission: The BZ4X recall highlights a serious omission issue where the hub bolts on the wheel can loosen to the point where the wheel can detach from the vehicle after low-mileage use [Article 129583].
(c) timing: The article mentions that for the BZ4X recall, the affected vehicles should not be driven until a fix is performed, but no remedy is available at the time of the announcement. Owners are provided loaner vehicles until the remedy is available, indicating a timing issue in resolving the software failure incident [Article 129583].
(d) value: The article does not specifically mention a value-related software failure incident.
(e) byzantine: The article does not describe a byzantine-related software failure incident.
(f) other: The other behavior observed in this software failure incident is a critical safety issue where the software failure could lead to severe consequences such as the wheel detaching from the vehicle, posing a significant risk to drivers and passengers [Article 129583]. |