Tag Archives: electrical short

Hyundai Kona Potential Engine Compartment Fire From Short Circuit

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Hyundai Motor America (Hyundai) is initiating a recall for certain 2024 Kona models due to a potential risk of electrical short circuiting. This issue arises from the possibility of the battery cables rubbing against the engine control module bracket.

These vehicles are equipped with a 12-volt positive battery cable that could suffer damage during frontal collisions, leading to contact with the engine control module (ECM) bracket. This contact increases the likelihood of an electrical short, which could result in a fire in the engine compartment post-collision. Signs of this problem include smoke or a burning smell emanating from the engine area.

The issue first came to Hyundai’s attention in November 2023, following a report by the Insurance Institute for Highway Safety (IIHS) about an engine compartment fire in a 2024 Hyundai Kona 1.6T-GDI AWD during a crash test. The IIHS observed smoke and flames emerging from the engine area shortly after the test. Their preliminary assessment indicated a short circuit in the ECM, which led to repeated reignitions. The situation was resolved after disconnecting the auxiliary battery. This incident prompted NASO to launch a new investigation.

A joint examination by NASO, HMC, HATCI, and IIHS revealed damage to the alternator and 12-volt positive power wiring beneath the ECM, with exposed copper cores. The ECM bracket was found pressing against the 12-volt positive battery cable, believed to have shifted during the crash and caused the electrical short leading to the fires.

In response, Hyundai conducted crash tests in December with newly designed sheathing to protect the 12-volt positive wiring from shorting due to ECM bracket contact. These tests were successful, showing no damage or electrical shorting. Consequently, HMA’s NASO decided to recall the affected Kona vehicles.

To date, there have been no reported crashes, injuries, or deaths related to this issue, except for the single fire incident during the IIHS test. Hyundai is unaware of any field incidents. Vehicle owners will be notified to return their vehicles to Hyundai dealers for the installation of protective sheathing over the wiring. The recall is designated as number 252, with NHTSA campaign number 23V-900.

OCS Sensors May Short Circuit In Lexus And Toyota Vehicles

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Toyota Motor Engineering & Manufacturing (Toyota) has announced a significant recall affecting a range of Lexus and Toyota vehicles from the 2020 to 2022 model years. This recall, necessitated by a defect in the Occupant Classification System (OCS) sensor, underscores a critical safety issue that could potentially prevent the deployment of the front passenger airbag.

The recall spans a variety of models, including:

  • Lexus ES (2020-2021)
  • Lexus ES Hybrid (2020-2022)
  • Lexus RX and RX Hybrid (2020-2021)
  • Toyota Avalon and Avalon Hybrid (2020-2021)
  • Toyota Camry and Camry Hybrid (2020-2022)
  • Toyota Corolla, Highlander, and their Hybrid variants (2020-2021)
  • Toyota RAV4 and RAV4 Hybrid (2020-2021)
  • Toyota Sienna Hybrid (2021)

The issue originates from the Occupant Classification System sensors located in the front passenger seat. These sensors play a pivotal role in the Supplemental Restraint System (SRS), determining the deployment of the front passenger airbag based on the occupant load. A defect has been identified wherein, during production, the sensor’s Printed Circuit Board (PCB) became deformed. This deformation can cause a crack in a capacitor, leading to moisture intrusion over time and resulting in a short circuit.

The malfunctioning of these sensors poses a significant risk. In the event of a short circuit, the SRS warning lamp and the “Passenger Airbag OFF” lamp will illuminate, accompanied by a message on the Multi-Information Display (MID). The most concerning consequence is that the front passenger airbag may not deploy in certain crashes, markedly increasing the risk of injury to the occupant.

To address this issue, Toyota dealers will conduct inspections and replace the sensor where necessary. The recall is comprehensive in its scope, and owner notification letters are expected to be dispatched starting February 4, 2024.

Toyota has assigned the numbers 23TB15/23TA15 for Toyota and 23LB03/23LA03 for Lexus vehicles to this recall. Additionally, the National Highway Traffic Safety Administration (NHTSA) has registered this recall under campaign number 23V-865.

This recall by Toyota highlights the intricate nature of modern automotive safety systems and the critical importance of their proper functioning. Owners of the affected vehicles are urged to heed the recall notice and have their vehicles inspected and repaired as necessary to ensure their safety and that of their passengers.

Honda’s CR-V Hybrid Battery Cable Safety Issue

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Honda has announced a safety recall for certain 2020-2022 CR-V Hybrid vehicles due to a critical issue concerning the 12-Volt battery cable. This recall comes after a detailed investigation into the safety of these vehicles, revealing a potential risk that could increase during specific types of crashes.

The identified problem lies in the routing of the 12-Volt battery cable, which is situated outside of the body frame and lacks a fuse on the power circuit. This design flaw could lead to the battery cable short-circuiting or overheating, particularly in the event of a crash impacting the left front fender area. Such a scenario raises significant concerns about the possibility of a fire and the risk of injury to the occupants.

Chronology of Events Leading to the Recall

  • May 17, 2021: The first known incident occurs, where a crash led to a short circuit in the battery cables located in the left front fender.
  • May 19, 2021: Honda receives a report from the National Highway Traffic Safety Administration (NHTSA) about this incident.
  • May 28, 2021: Honda collaborates with the NHTSA to inspect the affected vehicle and analyze the issue.
  • August 18, 2021: After discussing the first incident with NHTSA, Honda initially concludes that there are no high-voltage related issues or similar complaints.
  • September 16, 2021: Honda conducts further tests to analyze the issue.
  • October 21, 2021: Honda’s evaluation suggests that the crash angle in the first incident was a rare occurrence.
  • June 13, 2022: Honda starts implementing a fuse in production models to address this potential issue.
  • August 18, 2022: A second incident under similar circumstances prompts another analysis by Honda.
  • August 29, 2023: Honda receives a warranty claim possibly related to the same issue.
  • October 30, 2023: Honda reassesses its stance on the rarity of such occurrences and the likelihood of future incidents.
  • December 6, 2023: Honda acknowledges a defect related to vehicle safety and decides to initiate a recall.

The Recall Process

Honda, adhering to its commitment to safety and customer satisfaction, has decided to recall the affected vehicles. Registered owners will be notified via mail to bring their vehicles to an authorized Honda dealer. Here, the battery cable will be replaced with an improved part that addresses the identified safety concern. Honda’s internal number for this recall is FGB, and the NHTSA campaign number is 23V-844.

Safety and Customer Support

From August 2019 through December 6, 2023, Honda has recorded two warranty claims related to this issue, with no reports of injuries or fatalities. This proactive recall demonstrates Honda’s dedication to the safety of its customers and its responsiveness to potential safety issues. Vehicle owners are encouraged to respond promptly to the recall notice to ensure their safety and the continued reliability of their vehicles.

Ford Fusion PHEV Battery Problem
Risk Of Stall Or Fire

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Ford Fusion with smoke from trunk

Certain Ford Fusion PHEV vehicles may experience damage to their Battery Energy Control Module (BECM) due to excessive voltage and current flow. This issue can lead to a loss of motive power and pose safety risks such as the possibility of a crash or a localized fire around the BECM. Ford is currently working on a fix for this safety issue.

Problem was first discovered in July 2022, when Ford’s Trend and Early Warning Support (TEWS) team alerted the Critical Concern Review Group (CCRG) about five fire reports involving 2019 Fusion PHEV vehicles equipped with 30Ah high voltage batteries. These fires occurred while the vehicles were at dealerships during a replacement BECM service to address various issues like voltage sense Diagnostic Trouble Codes (DTCs), check engine light, no start, or loss of motive power concerns. Ford’s High Voltage Battery Systems Team conducted an analysis and determined that the fires originated from the BECM. Further examination by the supplier revealed that the Current Interrupt Device (CID) had been activated in the high voltage battery cells of the affected units, though the reason behind this activation remains unknown. Due to the rate and severity of the concern, Ford’s CCRG initiated an investigation.

In February 2023, Ford published a Technical Service Bulletin (TSB) that advises replacing the high voltage battery if vehicles come in for service with one or more voltage sense DTCs, instead of just replacing the BECM. This measure aims to address the underlying issue and prevent further damage.

While a permanent remedy is under development, Ford urges owners not to charge their vehicles until the remedy is implemented. To ensure owners are aware of the safety risk, interim letters have been sent to them as of July 14, 2023. Second letters will follow once the remedy becomes available. This recall is identified as 23S33 by Ford, and the NHTSA campaign number is 23V-440.

Toyota and Lexus Airbag Problem

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AirbagToyota and Lexus have announced that they will be reaching out to owners of specific vehicle models due to a critical problem related to the electrical connection inside the steering column. This issue has the potential to disable the driver’s side airbag, leading to non-compliance with Federal Motor Vehicle Safety Standards for Occupant Crash Protection.

The problem first came to Toyota’s attention in May 2023 when they were contacted by the spiral cable assembly supplier. The supplier informed Toyota about an ongoing investigation into the manufacturing process, which revealed contamination in the washing station for specific spiral cable components. As a consequence, a poor welding condition could occur between the Flexible Flat Cable (FFC) and the bus bar, which affects connectivity to various controls on the steering wheel. Extensive testing conducted by the supplier between late-May and late-June indicated that the FFC might detach from the bus bar at the weak weld connection area.

As per the defect report, the steering column assembly in the affected vehicles contains electrical connections to the driver’s airbag module housed within a spiral cable assembly, including the FFC. In cases where the FFC is inadequately welded to the spiral cable’s bus bar, there is a risk of the FFC separating, resulting in one or more open circuits linked through the FFC. This separation specifically impacts the circuit responsible for connecting the driver’s airbag module. If connectivity is lost, the SRS warning light will activate, and the driver’s airbag may be deactivated, failing to deploy in a crash scenario that necessitates its activation. Consequently, this raises the likelihood of driver injury in the event of a crash.

 

The vehicles affected include:

2023-2024 Lexus NX Hybrid
2023-2024 Lexus NX250
2023-2024 Lexus NX350
2023 Lexus RX Hybrid
2023 Lexus RX350
2023 Lexus RX500H
2023 Toyota Corolla
2023 Toyota Corolla Cross
2023 Toyota Corolla Cross Hybrid
2023 Toyota Highlander
2023 Toyota Highlander Hybrid
2023 Toyota Tacoma

Dealers will inspect and replace the spiral cable assembly as necessary. Toyota’s number for this recall is 23TA08, Lexus’ number for this recall is 23LA02 and the NHTSA campaign number is 23V-480.

Ford F-150 BEV Tail Lights Flicker

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Ford will be contacting the owners of certain 2022-2023 Ford F-150 Battery Electric Vehicles (BEVs) due to a problem that may cause inoperative or flickering back-up lights. This issue came to the attention of Ford’s Critical Concern Review Group (CCRG) in March 2023, following reports of moisture in the rear light bar of select F-150 BEV Platinum and Lariat vehicles from the 2022 and 2023 model years. These vehicles feature a rear light bar that spans the tailgate and houses the supplemental tail lamp and reverse lamp functions. Upon further investigation, Ford discovered an increased rate of warranty reports citing moisture in the rear light bar, which consequently resulted in certain claims of malfunctioning or flickering rear supplemental tail lamps and reverse lamps.

Upon examining the returned parts, Ford observed the presence of water droplets or condensation within the lamp, indicating micro cracks in the outer lens of the light bar. Testing conducted on the parts retrieved from the field revealed that over half of them had either inoperative or flickering supplemental tail lamps and/or reverse lamps. The investigation by the CCRG pinpointed the cause of stress on the light bar to be static and dynamic loading during the assembly plant fit process, which involves aligning the tailgate and surrounding components. Additionally, extreme tailgate surface loading in temperatures below -40 Celsius was also identified as a factor. The forces exerted on the light bar and its housing result in stress being transferred to the lens, potentially leading to the development of micro cracks.

To address this issue, owners who receive notices will be required to visit their dealerships to have the rear light bar replaced. Ford has assigned the recall number 23S30 to this specific recall, while the NHTSA campaign number is 23V-418.

In situations where vehicle owners encounter persistent issues with their newly purchased vehicles, such as the problems described above, they may be protected by lemon laws. Lemon laws vary by jurisdiction but are generally designed to provide legal recourse to consumers who unknowingly purchase vehicles with substantial defects that affect their safety, value, or use. These laws typically require manufacturers to either replace the defective vehicle or refund the purchase price if the vehicle cannot be adequately repaired within a reasonable number of attempts. If you suspect that your vehicle is a lemon, it is advisable to familiarize yourself with the lemon law provisions in your jurisdiction and consult with a legal professional to understand your rights and options for resolution.

Brake Pressure Switch Short May Cause Fire In Chevy Trucks

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General Motors. LLC (GM) has decided that a problem exists in certain 2019-2023 Chevrolet 4500HD, 5500HD, and 6500HD medium-duty trucks. The brake pressure sensor assembly could leak brake fluid into the brake pressure switch and cause an electrical short circuit.

GM opened an investigation in August 2022 following reports of a vehicle fire on a 2019 Chevrolet Silverado medium-duty truck. As part of that investigation, GM reviewed field data potentially related to the problem and warranty returned brake pressure sensors.

While a series of tests failed to duplicate the condition, in January, a warranty-returned sensor and harness were identified as exhibiting signs of heat damage. This part was subjected to more detailed analysis, including X-ray scans and a chemistry laboratory analysis. The results from these analyses revealed the presence of brake fluid past the diaphragm seal, into the brake pressure switch, and through the actual wire harness into the pump’s fuse circuit. An inspection of the returned components also revealed delamination of the corrosion-inhibiting sealant, which allowed slow seepage of the brake fluid past the diaphragm seal.

According to the defect report, a zinc-nickel plating and sealant used to inhibit corrosion within the pressure sensor assembly may cause delamination of the sealant which results in small fragments of sealer underneath the diaphragm during assembly which allows brake fluid to slowly seep past the seal and into the pressure switch. The brake fluid may seep into the sensor’s electrical components and short the brake pressure switch and the associated fuse. If brake fluid shorts the brake pressure switch and the fuse, the circuit can generate enough heat and could result in a fire. An under-hood fire may occur when the vehicle is off and possibly unattended.

Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the master cylinder pressure sensor and inspect the wire harness. If the harness is damaged, it will be replaced as well. Interim letters notifying owners of the safety risk are expected to be mailed on May 29, 2023. Second letters will be mailed once the remedy is available. GM’s number for this recall is N222375270 and the NHTSA campaign number is 23V-266.

Chevy Express & GMC Savana HVAC Circuit May Overheat

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General Motors (GM) is one of the largest automobile manufacturers in the world, with a reputation for producing reliable and safe vehicles. However, like all automakers, GM occasionally identifies issues with its vehicles that need to be addressed to ensure the safety of its customers. Recently, GM identified a problem in certain 2003-2023 Chevrolet Express Cutaway and 2003-2023 GMC Savana Cutaway incomplete vehicles. These vehicles are equipped with wiring for an optional rear heating, ventilation, and air-conditioning (HVAC) system.

According to the defect report, these vehicles are equipped with an unused circuit that a final-stage manufacturer may elect to use to install an optional rear HVAC system. While this circuit is not typically used, if the final-stage manufacturer leaves the circuit’s connectors or cut wires unsealed, where exposure to moisture or contamination may, over time, cause corrosion. In rare cases, this corrosion could result in a high current draw through the circuit at the vehicles’ lower left side B-pillar. If left unaddressed, the problem could cause excessive heat in the circuit that could result in a fire.

To address this problem, GM began a product investigation in December 2022, after receiving reports of two alleged fire incidents involving a 2013 and a 2014 Chevrolet Express Cutaway incomplete vehicles. The company’s investigators analyzed inspection reports from the two subject vehicles and retrieved and analyzed field data for all Express Cutaway and GMC Savana Cutaway vehicles sold for model years 2005 through 2023, comprising approximately 167,000 units. Analysis of the field data, including legal claims, identified a total of eight potentially related complaints, six of which alleged fires.

On March 30, 2023, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a safety recall. While the company is not aware of any accidents or injuries associated with this condition, it is taking this action to ensure the safety of its customers.

Owners of the affected vehicles will receive notices with instructions to return to their dealers to have the rear HVAC blower motor circuits at the left side B-pillar properly sealed. The recall is identified by GMC’s number N222386050 and the NHTSA campaign number is 23V-247.