Incident: Tesla Model X Software Update Disables Safety Sensors, Raises Concerns

Published Date: 2016-09-01

Postmortem Analysis
Timeline 1. The software failure incident involving Tesla's Model X rear doors occurred in September 2016 as per the article published on September 1, 2016 [47149].
System 1. Sensors in the rear doors of Tesla Model X vehicles [47149]
Responsible Organization 1. Tesla [47149]
Impacted Organization 1. Tesla [47149]
Software Causes 1. The software update version 7.1 2.32.100 for Tesla Model X vehicles aimed to address issues with the Falcon Wing rear doors, but it potentially disabled sensors causing the doors to malfunction [47149].
Non-software Causes 1. The sensors in the Model X electric SUV's rear doors were not functioning correctly, leading to safety issues [47149].
Impacts 1. The software failure incident led to the doors of Tesla Model X electric SUV not stopping closing when objects were placed in their path, posing a safety risk as demonstrated by the doors chopping through a cucumber [47149].
Preventions 1. Implementing thorough testing procedures to ensure that software updates do not introduce new safety risks [47149]. 2. Conducting a comprehensive risk assessment before deploying software updates to identify potential safety implications [47149]. 3. Providing clear and transparent communication to customers about any changes or modifications made to the software, especially those related to safety-critical systems [47149].
Fixes 1. Implement a new software update that addresses the rear door functionality issue without compromising safety by ensuring the sensors are functioning correctly and accurately detecting obstacles [47149].
References 1. YouTube page MEtv Product Reviews [47149] 2. Jalopnik 3. Automotive News

Software Taxonomy of Faults

Category Option Rationale
Recurring unknown (a) The software failure incident related to Tesla's Model X rear doors is specific to Tesla as there is no mention of a similar incident happening before within the same organization in the provided article [47149]. (b) There is no information in the provided article [47149] about a similar incident happening at other organizations or with their products and services.
Phase (Design/Operation) design, operation (a) The software failure incident in the article is related to the design phase. The update version 7.1 2.32.100 sent to Tesla Model X vehicles aimed to address complaints about the rear doors opening or closing incorrectly. However, the "improvement" in the software update potentially created a serious safety issue by possibly deactivating sensors that were causing the doors to act up. This design change led to a situation where the doors no longer stopped closing when objects were in their path, posing a risk of harm if a hand or any body part was in the way [47149]. (b) The software failure incident is also related to the operation phase. The failure occurred due to the potential deactivation of sensors in the doors, impacting the proper operation of the doors. The article highlights the dangers of leaving objects too close to the doors, as demonstrated by the doors chopping through a cucumber when the sensors were potentially disabled. This poses a safety risk during the operation of the vehicle, especially when passengers are interacting with the doors [47149].
Boundary (Internal/External) within_system, outside_system The software failure incident related to the Tesla Model X rear doors can be categorized as both within_system and outside_system: (a) within_system: The failure was within the system as the software update (version 7.1 2.32.100) sent to Model X vehicles aimed to address complaints about the rear doors opening or closing incorrectly. The update potentially disabled sensors causing the doors to act up, leading to safety issues within the system [47149]. (b) outside_system: The failure was also influenced by factors outside the system as the software update's impact extended to interactions with physical objects outside the vehicle. The deactivation of sensors resulted in the doors no longer stopping when objects were in their path, posing risks to individuals outside the vehicle, such as hands or other objects near the doors [47149].
Nature (Human/Non-human) non-human_actions, human_actions (a) The software failure incident in the Tesla Model X update was related to non-human actions. The update version 7.1 2.32.100 was sent over the air to address issues with the Falcon Wing rear doors, but it seems that the fix may have involved deactivating sensors causing the doors to malfunction. This led to a situation where the doors no longer stopped closing when objects were in their path, posing a safety risk. The failure was attributed to the potential disabling of sensors in the doors, impacting their functionality [47149]. (b) The human actions involved in this incident were related to the deployment of the software update by Tesla. The decision to send out the update to address complaints about the rear doors' performance was a human action. Additionally, the response from Tesla to inquiries about whether sensors were disabled in the update was also a human action. The need for clear communication to owners about any changes made to the sensors highlights the importance of human actions in addressing software failures [47149].
Dimension (Hardware/Software) hardware, software (a) The software failure incident in Article 47149 is related to hardware. The incident involved a software update sent to Tesla Model X vehicles to address issues with the Falcon Wing rear doors. The update was intended to improve the functionality of the doors, but it was reported that the fix may have involved deactivating sensors that were causing problems. This led to a safety issue where the doors no longer stopped closing when objects were in their path, potentially posing a danger to individuals near the doors. The concern raised was whether the update involved disabling sensors in the doors, indicating a hardware-related failure [47149].
Objective (Malicious/Non-malicious) non-malicious (a) The software failure incident described in the article is non-malicious. The failure occurred due to a software update (version 7.1 2.32.100) sent to Tesla Model X vehicles to address issues with the Falcon Wing rear doors. The update was intended to improve closure consistency and reduce false detection of obstacles. However, the update potentially disabled sensors in the doors, leading to safety concerns as the doors no longer stopped closing when objects were in their path, posing a risk of injury if a hand or other body part was in the way [47149].
Intent (Poor/Accidental Decisions) poor_decisions, accidental_decisions The software failure incident related to the Tesla Model X update involved potential poor decisions and accidental decisions. The update aimed to improve the functionality of the Falcon Wing rear doors by addressing complaints about incorrect opening and closing. However, it was suggested that the update may have simply deactivated sensors causing the issues, leading to a more serious safety concern where the doors no longer stopped closing when objects were in their path, posing a risk of injury. The incident raised questions about whether the update involved disabling sensors and highlighted the importance of clear communication with owners regarding any changes made to the software [47149].
Capability (Incompetence/Accidental) development_incompetence, accidental (a) The software failure incident in the article can be attributed to development incompetence. The update sent to Model X vehicles to address issues with the rear doors potentially disabled sensors that were crucial for safety. The article highlights that the doors no longer stopped closing when objects were in their path, posing a serious safety risk. The concern raised is whether Tesla improved door functionality by disabling sensors, indicating a lack of professional competence in handling the software update [47149]. (b) The incident can also be categorized as accidental. The article mentions that the update version 7.1 2.32.100 was intended to address complaints about the rear doors opening or closing incorrectly. However, it seems that the unintended consequence of potentially disabling sensors led to a more serious safety issue. This accidental outcome of the update causing the doors to chop through objects placed in their path, including a cucumber, demonstrates how the failure was not intentional but a result of unforeseen consequences [47149].
Duration temporary The software failure incident described in the article [47149] can be categorized as a temporary failure. The article discusses how Tesla's software update for the Model X electric SUV led to a safety issue where the rear doors no longer stopped closing when objects were in their path. This issue arose as a result of the update potentially deactivating sensors that were meant to prevent such incidents. The temporary nature of this failure is evident from the fact that it was caused by specific circumstances introduced by the software update, rather than being a permanent issue inherent to all circumstances.
Behaviour omission (a) crash: The software failure incident in the article did not involve a crash where the system lost state and did not perform any of its intended functions. The issue was related to the functionality of the rear doors of Tesla Model X electric SUV after a software update, where the doors were not stopping closing when objects were placed in their path, potentially leading to safety concerns [47149].

IoT System Layer

Layer Option Rationale
Perception sensor, embedded_software The software failure incident described in the article is related to the sensor layer of the cyber physical system that failed. The incident involved Tesla's Model X electric SUV where a software update was sent to address issues with the rear doors. The update potentially deactivated sensors causing the doors to no longer stop closing when objects were in their path, leading to safety concerns [47149].
Communication unknown The articles do not provide specific information about whether the software failure incident related to the communication layer of the cyber physical system that failed was at the link_level or connectivity_level.
Application TRUE The software failure incident described in Article 47149 is related to the application layer of the cyber physical system. The failure was caused by a software update (version 7.1 2.32.100) sent to Tesla Model X vehicles to address issues with the Falcon Wing rear doors. The update aimed to improve closure consistency and reduce false detection of obstacles. However, the update potentially disabled sensors in the doors, leading to a serious safety issue where the doors no longer stopped closing when objects were in their path, as demonstrated in videos by MEtv Product Reviews. This failure can be attributed to contributing factors introduced by bugs or incorrect usage of the software update, falling under the definition of an application layer failure [47149].

Other Details

Category Option Rationale
Consequence harm, theoretical_consequence (b) People were physically harmed due to the software failure. The software failure incident involving Tesla's Model X rear doors resulted in a physical harm consequence. The software update intended to address issues with the doors led to a situation where the doors no longer stopped closing when objects were in their path. Videos demonstrated that the doors chopped through a cucumber placed in their path, highlighting the potential danger if a hand or another body part were in the way [47149].
Domain transportation The software failure incident discussed in the article [47149] is related to the transportation industry. Specifically, it involves Tesla's Model X electric SUV and the malfunctioning of its trick Falcon Wing rear doors due to a software update. The update was intended to address complaints about the doors opening or closing incorrectly but inadvertently led to a safety issue where the doors no longer stopped closing when objects were in their path, posing a risk to individuals near the doors [47149].

Sources

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