Incident: Secondary Hood Latch Failure in Nissan Pathfinder SUVs.

Published Date: 2022-06-29

Postmortem Analysis
Timeline 1. The software failure incident involving the secondary hood release mechanism in Nissan Pathfinders happened when the bell crank lever failed to engage and disengage the secondary hood latch, potentially leading to a safety hazard [128923]. 2. Published on 2022-06-29. 3. The software failure incident likely occurred between June 20, 2012, and July 27, 2016, as these were the dates when the affected Nissan Pathfinders were built [128923].
System 1. Bell crank lever component in the 2013-2016 Nissan Pathfinder SUV [128923]
Responsible Organization unknown
Impacted Organization 1. Nissan - The software failure incident impacted Nissan as they had to issue a recall for 322,671 Nissan Pathfinder SUVs due to a problem with the bell crank lever [128923].
Software Causes Unknown
Non-software Causes 1. Accumulation of dust and dirt on the bell crank lever, preventing the redundant hood latch from securing properly [128923].
Impacts 1. The software failure incident in the Nissan Pathfinder SUVs could potentially lead to accidental hood deployment while the vehicle is in motion, reducing forward visibility and increasing the risk of a crash [128923].
Preventions 1. Regular maintenance and cleaning of the bell crank lever component to prevent the accumulation of dust and dirt that could lead to malfunction [128923].
Fixes 1. Inspecting and replacing the affected components at the dealership [128923] 2. Cleaning and conditioning the bell crank lever as per the owner's manual instructions [128923]
References 1. Recall documents filed by Nissan with the National Highway Traffic Safety Administration [Article 128923]

Software Taxonomy of Faults

Category Option Rationale
Recurring unknown <Article 128923> does not mention any software failure incident related to the Nissan Pathfinder recall. Therefore, the information about the software failure incident happening again at one organization or multiple organizations is unknown.
Phase (Design/Operation) design (a) The software failure incident in the article is related to the design phase. The issue stems from a component called the bell crank lever, which engages and disengages the secondary hood latch in Nissan Pathfinders. The problem arises from accumulating dust and dirt on the lever, which may cause it to remain open, preventing the redundant hood latch from securing properly. This design flaw could lead to an accidental hood deployment, reducing forward visibility and increasing the risk of a crash [128923]. (b) There is no information in the article indicating that the software failure incident is related to the operation phase.
Boundary (Internal/External) within_system (a) within_system: The software failure incident related to the Nissan Pathfinder recall is primarily within the system. The issue stems from a component called the bell crank lever, which engages and disengages the secondary hood latch. Accumulating dust and dirt on this lever may cause it to remain open, preventing the redundant hood latch from securing properly, potentially leading to an accidental hood deployment [128923]. This issue is internal to the vehicle system and is not caused by external factors.
Nature (Human/Non-human) non-human_actions (a) The software failure incident in this case is not related to non-human actions but rather to mechanical components in the vehicle, specifically the bell crank lever, accumulating dust and dirt which may prevent the redundant hood latch from securing properly, potentially leading to an accidental hood deployment [128923]. (b) The failure is not due to human actions but rather a design or mechanical issue with the component itself [128923].
Dimension (Hardware/Software) hardware (a) The software failure incident in the article is related to hardware. The issue stems from a component called the bell crank lever, which engages and disengages the secondary hood latch in Nissan Pathfinders. Accumulating dust and dirt on this hardware component may cause it to remain open, preventing the redundant hood latch from securing properly, potentially leading to safety hazards [128923].
Objective (Malicious/Non-malicious) non-malicious The software failure incident described in the article does not involve any malicious intent. The issue with the secondary hood latch in Nissan Pathfinders is attributed to accumulating dust and dirt on a component called the bell crank lever, which prevents the redundant hood latch from securing properly. This non-malicious failure is addressed through a recall by Nissan to inspect and replace the defective components, ensuring the safety of the vehicle owners [128923].
Intent (Poor/Accidental Decisions) unknown The articles do not mention any software failure incident related to poor decisions or accidental decisions. Therefore, the intent of the software failure incident in the provided articles is unknown.
Capability (Incompetence/Accidental) unknown The article does not mention any software failure incident related to development incompetence or accidental factors.
Duration unknown The articles do not mention any software failure incident related to a permanent or temporary duration. Therefore, the duration of the software failure incident in this case is unknown.
Behaviour value, other (a) crash: The article does not mention any software crash related to the Nissan Pathfinder recall incident. [128923] (b) omission: The software failure incident in the article is not related to the system omitting to perform its intended functions at an instance(s). [128923] (c) timing: The software failure incident in the article is not related to the system performing its intended functions correctly, but too late or too early. [128923] (d) value: The software failure incident in the article is related to the system performing its intended functions incorrectly. The issue arises from a component called the bell crank lever, which engages and disengages the secondary hood latch. Accumulating dust and dirt on the lever may cause it to remain open, preventing the redundant hood latch from securing properly, potentially leading to an accidental hood deployment. [128923] (e) byzantine: The software failure incident in the article is not related to the system behaving erroneously with inconsistent responses and interactions. [128923] (f) other: The software failure incident in the article is related to a hardware component (bell crank lever) malfunctioning due to dust and dirt accumulation, leading to a potential safety hazard with the hood latch system. This issue is not directly related to typical software failures like bugs or crashes. [128923]

IoT System Layer

Layer Option Rationale
Perception None None
Communication None None
Application None None

Other Details

Category Option Rationale
Consequence harm, theoretical_consequence The consequence of the software failure incident described in the article is related to potential harm to individuals due to a safety hazard caused by the failure. The article mentions that if the hood latch issue is not addressed, it could lead to reduced forward visibility and increase the risk of a crash, potentially causing harm to individuals [128923].
Domain unknown <Article 128923> does not mention any software failure incident related to the industry that the failed system was intended to support. Therefore, the industry that the failed system was intended to support is unknown.

Sources

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