Incident: Stop-Start System Failure in 2016-2020 Honda Pilot Investigation

Published Date: 2022-06-08

Postmortem Analysis
Timeline 1. The software failure incident involving the 2016-2020 Honda Pilot's stop-start system not restarting when it's supposed to was reported in Article 128919. 2. The article was published on 2022-06-08. 3. The incident involving the software failure in the Honda Pilot likely occurred before the article's publication date, so it happened sometime between 2016 and 2022.
System 1. Stop-start system in the 2016-2020 Honda Pilot [128919]
Responsible Organization 1. The software failure incident in the 2016-2020 Honda Pilot, where the engine may not restart due to issues with the stop-start system, was caused by a potential software glitch in the stop-start system software [128919].
Impacted Organization 1. Owners of 2016-2020 Honda Pilot vehicles with the stop-start system [128919]
Software Causes 1. The software cause of the failure incident in the 2016-2020 Honda Pilot investigation was related to the stop-start system's malfunction, where the engine may not restart as intended due to a software issue [128919].
Non-software Causes 1. The issue with the 2016-2020 Honda Pilot's stop-start system not restarting is related to the vehicle's 3.5-liter V6 engine, which may not restart as intended [128919].
Impacts 1. Owners of affected 2016-2020 Honda Pilot vehicles may find themselves stranded at intersections if the stop-start system fails, potentially leading to inconvenience and safety concerns [128919].
Preventions 1. Implementing thorough software testing procedures during the development phase to identify and address any potential issues with the stop-start system [128919]. 2. Conducting regular software updates and maintenance checks to ensure the proper functioning of the stop-start system [128919]. 3. Implementing robust quality assurance measures to catch any software bugs or faults before they impact the end-users [128919].
Fixes 1. Updating the software controlling the stop-start system in the affected vehicles [128919].
References 1. NHTSA's Office of Defects Investigation [128919] 2. Honda spokesperson [128919]

Software Taxonomy of Faults

Category Option Rationale
Recurring one_organization (a) The software failure incident related to the stop-start system in the 2016-2020 Honda Pilot has potentially affected other models with the same powertrain as well. The article mentions that models such as the Acura TLX, Acura MDX, and Honda Odyssey, which share the same powertrain, may also be affected by the issue [128919]. This indicates that the software failure incident has the potential to impact multiple models within the same organization (Honda). (b) The software failure incident related to the stop-start system in the 2016-2020 Honda Pilot has not been reported to have occurred at other organizations or with their products and services in the articles provided. Therefore, there is no information available about similar incidents happening at multiple organizations.
Phase (Design/Operation) design, operation (a) The software failure incident related to the design phase: The software failure incident in the 2016-2020 Honda Pilot is attributed to the stop-start system, which is designed to improve fuel economy by shutting the engine off when the vehicle comes to a stop. However, the issue arises when the engine fails to restart as intended, leaving owners with a non-responsive vehicle. This failure is a result of a design flaw in the stop-start system [128919]. (b) The software failure incident related to the operation phase: The operation-related failure in the 2016-2020 Honda Pilot occurs when the engine does not restart as expected, leading to owners needing a jump-start to get the vehicle moving again. This failure is a consequence of the system not operating as intended during normal vehicle operation, causing inconvenience to the owners [128919].
Boundary (Internal/External) within_system (a) within_system: The software failure incident related to the 2016-2020 Honda Pilot's stop-start system not restarting the engine is a within_system failure. The issue originates from within the system itself, specifically with the stop-start system designed to improve fuel economy by shutting off the engine when the vehicle comes to a stop. However, in this case, the engine may not restart as intended, leading to owners needing a jump-start to get the vehicle moving again [128919].
Nature (Human/Non-human) non-human_actions, human_actions (a) The software failure incident in the 2016-2020 Honda Pilot related to the stop-start system not restarting the engine as intended is categorized under non-human_actions. This failure is attributed to a glitch or fault in the software system itself, leading to the engine not restarting when it should, causing owners to experience a dead vehicle situation [128919]. (b) On the other hand, human_actions are also involved in the response to the software failure incident. Both Honda and NHTSA are actively investigating the issue, with Honda cooperating with NHTSA and conducting its own internal review of the available information. This collaboration between the automaker and the regulatory agency highlights the human actions taken to address and resolve the software failure incident [128919].
Dimension (Hardware/Software) hardware (a) The software failure incident related to hardware: - The article mentions that the 2016-2020 Honda Pilot is under investigation by the National Highway Traffic Safety Administration (NHTSA) for engines that may not restart when they're supposed to. This issue is specifically related to the stop-start system of the vehicle, which is a hardware component designed to improve fuel economy by shutting the engine off when the vehicle comes to a stop [128919]. (b) The software failure incident related to software: - The software failure incident in this case is not directly attributed to software issues. The focus of the investigation and complaints is on the stop-start system hardware of the 2016-2020 Honda Pilot, which may not restart the engine as intended. There is no mention of software contributing factors in the reported incident [128919].
Objective (Malicious/Non-malicious) non-malicious (a) The articles do not mention any indication of a malicious software failure incident related to the investigation on the 2016-2020 Honda Pilot's stop-start system. The issue appears to be related to a non-malicious software failure where the engine may not restart as intended, potentially leaving owners stranded [128919].
Intent (Poor/Accidental Decisions) unknown [128919] The software failure incident related to the stop-start system in the 2016-2020 Honda Pilot was not explicitly mentioned as being caused by poor decisions or accidental decisions. The failure was described as the engine not restarting when it was supposed to, leading to owners needing a jump-start to get the vehicle moving again. The investigation by NHTSA and cooperation with Honda focused on understanding the issue and potentially issuing a recall if necessary.
Capability (Incompetence/Accidental) unknown (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 accidental factors is not explicitly mentioned in the provided article. Therefore, it is unknown whether the failure was due to contributing factors introduced accidentally.
Duration temporary The software failure incident related to the stop-start system in the 2016-2020 Honda Pilot appears to be temporary. The issue with the stop-start system causing the engine not to restart when it's supposed to is a specific malfunction that occurs under certain circumstances, such as when the vehicle comes to a stop. This temporary failure results in owners needing a jump-start to get the vehicle moving again, indicating that the failure is not permanent [128919].
Behaviour crash, other (a) crash: The software failure incident related to the 2016-2020 Honda Pilot involves a crash behavior where the stop-start system fails to restart the engine when it's supposed to, leaving owners with a seemingly dead vehicle. Some owners needed a jump-start to get the vehicle moving again, indicating a failure due to the system losing state and not performing its intended function [128919]. (b) omission: The software failure incident does not specifically mention an omission behavior where the system omits to perform its intended functions at an instance(s). (c) timing: The software failure incident does not specifically mention a timing behavior where the system performs its intended functions correctly, but too late or too early. (d) value: The software failure incident does not specifically mention a value behavior where the system performs its intended functions incorrectly. (e) byzantine: The software failure incident does not specifically mention a byzantine behavior where the system behaves erroneously with inconsistent responses and interactions. (f) other: The software failure incident involves a behavior where the stop-start system of the Honda Pilot fails to restart the engine when it's supposed to, leading to owners needing a jump-start to get the vehicle moving again. This behavior could be categorized as a failure due to a system losing state and not performing its intended function, which aligns with the crash behavior [128919].

IoT System Layer

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

Other Details

Category Option Rationale
Consequence harm, delay, theoretical_consequence The consequence of the software failure incident related to the 2016-2020 Honda Pilot investigated by NHTSA was primarily related to potential harm and inconvenience to the vehicle owners. The software failure in the stop-start system of the Honda Pilot could lead to the engine not restarting when it's supposed to, potentially leaving owners stranded at intersections or in need of a jump-start to get the vehicle moving again. This issue could cause physical harm or inconvenience to the affected individuals [128919].
Domain transportation (a) The failed system in the software failure incident related to the 2016-2020 Honda Pilot is intended to support the transportation industry. The issue specifically affects the stop-start system of the vehicle, which is designed to improve fuel economy by shutting the engine off when the vehicle comes to a stop. This system failure can lead to the engine not restarting as intended, potentially leaving owners stranded and in need of a jump-start to get the vehicle moving again [Article 128919].

Sources

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