| Recurring |
one_organization |
(a) The software failure incident related to the brake assist systems in the 2019 Toyota Prius and RAV4 Hybrid is specific to Toyota vehicles. This incident has happened within the same organization, as Toyota has issued a new recall due to a fault in the brake booster affecting multiple models [88231].
(b) There is no information in the provided article about a similar incident happening 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 as it mentions a fault in the brake assist systems of the 2019 Toyota Prius and RAV4 Hybrid. The issue with the brake booster was traced back to a manufacturing error in a plastic brush holder for the motor brushes, which could cause an electrical connection to fail. This indicates a design flaw introduced during the development phase of the system [88231].
(b) The software failure incident related to the operation phase is highlighted in the article when it states that if the brake booster fails in any of the recalled cars, it deactivates the Vehicle Stability Control system and brake assist will not function as required. This failure due to the operation of the system could lead to safety concerns as the cars do not meet federal requirements for stability control systems when the fault occurs [88231]. |
| Boundary (Internal/External) |
within_system |
The software failure incident related to the Toyota Prius and RAV4 Hybrid recall is primarily within_system. The article mentions that the fault in the brake booster pumps was traced back to a plastic brush holder for the motor brushes, which was misshapen due to a manufacturing error, causing an electrical connection to fail [88231]. This indicates that the software failure originated from within the system itself. |
| Nature (Human/Non-human) |
human_actions |
(a) The software failure incident in the Toyota Prius and RAV4 Hybrid recall was not directly attributed to non-human actions. The issue was traced back to a manufacturing error in the brake booster pump, specifically a misshapen plastic brush holder for the motor brushes, which could cause an electrical connection to fail. This indicates a fault in the physical component rather than a non-human action [88231].
(b) The software failure incident in the Toyota Prius and RAV4 Hybrid recall was due to a manufacturing error in the brake booster pump, specifically a misshapen plastic brush holder for the motor brushes, which could cause an electrical connection to fail. This error was introduced during the manufacturing process, which involves human actions such as assembly and quality control. Therefore, the contributing factor to the software failure incident was introduced by human actions [88231]. |
| Dimension (Hardware/Software) |
hardware |
(a) The software failure incident in the reported article is related to hardware. The issue with the brake booster pumps in the Toyota Prius and RAV4 Hybrid was traced back to a plastic brush holder for the motor brushes, which was misshapen due to a manufacturing error. This misshapen part caused an electrical connection to fail, leading to the malfunction of the brake assist systems and the deactivation of the Vehicle Stability Control system [88231]. |
| Objective (Malicious/Non-malicious) |
non-malicious |
(a) The articles do not mention any malicious intent related to the software failure incident. [88231]
(b) The software failure incident in the articles is non-malicious, attributed to a fault in the brake assist systems due to a manufacturing error in the plastic brush holder for the motor brushes. This error causes an electrical connection to fail, leading to the deactivation of the Vehicle Stability Control system and the brake assist not functioning as required. The issue is identified as a defect in the system, not as a deliberate act to harm the vehicles. [88231] |
| Intent (Poor/Accidental Decisions) |
unknown |
The software failure incident related to the brake assist systems in the Toyota vehicles does not directly point to poor decisions or accidental decisions as the intent behind the failure. The article primarily attributes the issue to a manufacturing error in the plastic brush holder for the motor brushes, which may cause an electrical connection to fail, leading to the brake booster pump failure [88231]. |
| Capability (Incompetence/Accidental) |
accidental |
(a) The software failure incident related to development incompetence is not explicitly mentioned in the provided article. Therefore, it is unknown whether the failure was due to contributing factors introduced due to lack of professional competence by humans or the development organization.
(b) The software failure incident related to an accidental factor is mentioned in the article. The article states that the fault in the brake booster pumps was traced back to a manufacturing error, where a plastic brush holder for the motor brushes may be misshapen due to a manufacturing error, causing an electrical connection to fail. This indicates that the software failure incident was due to contributing factors introduced accidentally [88231]. |
| Duration |
temporary |
The software failure incident related to the brake booster issue in the Toyota and Lexus vehicles is more of a temporary nature. The failure is attributed to a manufacturing error in the plastic brush holder for the motor brushes, which may cause an electrical connection to fail. This specific issue is not a permanent failure but rather a temporary one caused by certain circumstances, such as the manufacturing error in the part [88231]. |
| Behaviour |
crash |
(a) crash: The software failure incident in the articles can be categorized as a crash since the brake booster failure leads to the deactivation of the Vehicle Stability Control system and the brake assist not functioning as intended, resulting in the system losing its state and not performing its intended functions [88231]. |