Tag Archives: software update

Phantom Braking Issue In Certain 2023 Chevrolet Colorado and GMC Canyon Trucks

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2023 Chevrolet Colorado and GMC CanyonIn the realm of automotive safety, the emergence of advanced driver assistance systems (ADAS) has promised to revolutionize the driving experience, offering heightened levels of safety and convenience. However, as with any technological advancement, occasional glitches and malfunctions can arise, potentially jeopardizing the safety of drivers and passengers alike. Such is the case with the “phantom braking” issue that has plagued certain 2023 Chevrolet Colorado and GMC Canyon trucks.

The issue came to light in September 2023, when reports of unexpected automatic emergency braking (AEB) incidents surfaced in General Motors (GM) vehicles in China. GM initiated an investigation through its Speak Up For Safety (SUFS) program, aiming to identify the root cause of the problem and implement appropriate corrective measures.

Upon investigation, it was discovered that the faulty behavior stemmed from the Front Camera Module (FCM) system, a crucial component responsible for detecting obstacles and triggering AEB when necessary. Under certain conditions, the FCM’s software exhibited erroneous detection of obstacles, resulting in unwarranted activation of the AEB system. This phenomenon, referred to as “phantom braking,” poses a significant safety risk, potentially leading to accidents and injuries.

GM, in collaboration with its supplier, conducted rigorous testing and analysis to pinpoint the underlying cause of the malfunction. This involved examination of field data from various sources, including different versions of the FCM software, vehicles produced in different periods, and reports from both the U.S. and China.

A total of 234 field complaints in the U.S. were potentially linked to the phantom braking issue. Among these incidents, four resulted in accidents, with three causing minor injuries to occupants. GM’s Safety Field Action Decision Authority (SFADA) made the decision to initiate a safety recall in February 2024.

The recall, identified by GM as A232424660 and by the National Highway Traffic Safety Administration (NHTSA) as campaign number 24V-133, involves a corrective measure aimed at rectifying the software glitch in the FCM. Authorized dealerships will apply updates to the FCM software, effectively addressing the root cause of the phantom braking issue and restoring the intended functionality of the AEB system.

In conclusion, while the emergence of advanced driver assistance systems has undoubtedly enhanced automotive safety, incidents such as the phantom braking issue serve as a stark reminder of the importance of vigilance and proactive intervention. Through swift action and collaboration between manufacturers, suppliers, and regulatory agencies, the automotive industry can continue to push the boundaries of safety innovation, ensuring that drivers can enjoy the benefits of technology without compromising their well-being on the road.

Jeep Safety Alert: Windshield Defrosting Systems

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Chrysler (FCA) will be contacting the owners of certain 2021-2024 Jeep Wrangler and 2022-2024 Jeep Grand Cherokee over a failure to comply with Federal Motor Vehicle Safety Standards (FMVSS) related to windshield defrosting and defogging systems. Owners of affected vehicles are urged to take immediate action to rectify this potentially hazardous issue.

In June 2023, FCA Technical Safety and Regulatory Compliance (TSRC) organization received reports indicating a potential malfunction in the windshield defrost system of certain 2021-2024 Jeep Wrangler Plug In Hybrid Electric Vehicles (PHEVs) and 2022-2024 Jeep Grand Cherokee PHEVs. This issue raised concerns about the vehicles’ compliance with FMVSS.

An investigation conducted by FCA determined that a subset of these vehicles may have been built with incorrectly programmed hybrid control processor (HCP) software. This flaw could result in the disabling of the windshield defrost system under specific conditions. The affected period for the Jeep Wrangler spans from September 2, 2020, to August 24, 2023, while for the Jeep Grand Cherokee, it extends from July 23, 2021, to December 5, 2023.

A disabled windshield defrost system poses a significant safety risk, as it can impair outward visibility during critical driving conditions, potentially leading to accidents. In response to this safety concern, FCA has initiated a voluntary safety recall of the affected vehicles.

To address the issue, authorized dealerships will update the HCP software to rectify the programming error. This corrective action aims to restore the proper functioning of the windshield defrosting and defogging systems, ensuring optimal visibility and driving safety for affected vehicle owners and occupants. This recall, identified as recall number 04B by Chrysler, carries the NHTSA campaign number 24V-111.

GM “Stop Delivery” On Certain Chevy Blazer, Chevy Equinox And GMC Terrain Vehicles

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Chevy Blazer EV Stop Delivery

General Motors (GM) has announced an immediate stop delivery order for certain 2024 model vehicles, including the Chevrolet Blazer, Chevrolet Blazer EV, Chevrolet Equinox, and GMC Terrain vehicles. This decision, taken as a precautionary measure to ensure customer satisfaction and vehicle reliability.

The specific issue prompting this stop delivery order has not been publicly disclosed by General Motors. The order is categorized under “Global Safety Field Investigations,” suggesting that GM is actively working to identify and rectify the underlying problem. The lack of detailed information at this stage highlights the company’s cautious approach in handling potential vehicle issues.

Affected vehicles have been identified through their Vehicle Identification Numbers (VINs), with a clear directive that these vehicles should not be sold or delivered by dealers until further details and solutions are provided. This restriction also prohibits dealer trades, auction releases, demonstration uses, or any other dealership activities involving these models. To facilitate this process, GM has updated the Investigate Vehicle History (IVH) screen in the Global Warranty Management (GWM) system, which now tags the affected vehicles with a “Stop Delivery” status and labels the VIN as “Incomplete Remedy Not Available.”

One significant concern that has emerged is related to software issues in the 2024 Chevrolet Blazer EV, which uses GM’s advanced Ultium battery system. A small number of Blazer EV owners have reported issues with the software quality, prompting Chevrolet to temporarily halt sales and deliveries of this model. This pause is intended to ensure that the vehicles delivered meet GM’s high standards for quality and reliability. Notably, the software problems cannot be resolved through an over-the-air (OTA) update, necessitating a visit to the dealership for service.

GM has assured customers and stakeholders that these software issues are not safety-related and do not pertain to the Ultium battery system or the Google Built-in features. The engineering teams at GM are actively working on a solution. Affected vehicle owners will be contacted by GM with instructions on scheduling their software updates.

This stop delivery order, labeled under GM number N232429910, is a measure by GM to preemptively address potential issues before they impact customers. As the situation evolves, GM is expected to provide further updates and guidance to both dealerships and vehicle owners.

Blank Instrument Display in Select 2024 Buick and Chevrolet Vehicles

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Owners of certain 2024 Buick and Chevrolet models should be aware of a critical software issue affecting their vehicles. This concern, primarily impacting the Buick Encore GX, Buick Envista, and Chevrolet Trax, has prompted a safety recall due to the risk of instrument panel displays going blank, either at startup or while driving.

In August 2023, General Motors’ Safety and Field Action Decision Authority (SFADA) initially addressed this issue through a service update bulletin. The bulletin aimed to update the Virtual Cockpit Unit (VCU) software in the affected models. However, this measure escalated to a safety recall after an intervention by the Korea Automobile Testing & Research Institute (KATRI).

During a meeting in September 2023 between GM Korea representatives and KATRI officials, KATRI determined that the issue warranted a safety recall rather than a mere service update. This decision was influenced by the potential danger posed by the software malfunction.

To date, GM has received 255 global complaints regarding the instrument panel blackout, though, fortunately, there have been no reported accidents or injuries related to this issue. Nonetheless, the risk cannot be understated. A blackout of the instrument panel while driving can dangerously divert the driver’s attention, escalating the risk of a crash.

Affected vehicle owners will be notified about the recall, identified by GM’s number A232424320 and the NHTSA campaign number 23V-744. To resolve the issue, owners can opt for a dealer visit to update the VCU software or choose an over-the-air (OTA) update.

The initiative to convert the service update into a safety recall underscores the importance of proactive safety measures in the automotive industry. The issue of the blank instrument displays in select 2024 Buick and Chevrolet vehicles is concerning and vehicle owners are encouraged to respond promptly to the notice to ensure their safety on the road.

Nissan Ariya Inverter Software Problem

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Nissan North America, Inc. (Nissan) is reaching out to the owners of certain 2023 Ariya vehicles due to an issue with the inverter software. This problem may trigger the inverter to detect a short circuit, causing a shutdown of the EV system and a loss of drive power.

The Discovery of the Problem:

Nissan first became aware of this issue during a production trial involving an Ariya vehicle in January 2022. In this trial, the electric motor abruptly shut off shortly after the vehicle began moving at low speed. A diagnostic trouble code (DTC) revealed a short circuit inside the motor, although no actual damage to the motor or its components was observed. A deeper investigation into the problem found that in some rare instances, conductive fibers generated during the operation from the slip ring in the motor could lead to a momentary short circuit between the electrodes.

Understanding the Problem:

Nissan Ariya dashAccording to the defect report, the root cause of the issue lies in conductive fibrous shavings from the drive motors’ slip ring assembly. These shavings can occasionally cause a momentary short circuit between the two slip rings. When this occurs, the fibrous shavings are instantaneously burned out, causing no harm to any vehicle components. However, when the inverter detects a momentary over-current due to the short circuit, it reduces motor torque to protect the internal components of the controller. This leads to a loss of drive power, and an “EV System Off” message is displayed on the dashboard to alert the driver.

In the event of this issue occurring, the torque to the driven wheels is cut off. This continues until the fail-safe mode is released, which requires turning the vehicle off and then back on. An unexpected loss of motive power while driving at high speeds could potentially increase the risk of an accident.

Nissan’s Solution:

To address this safety concern, Nissan dealers will reprogram the inverter software to enhance the fail-safe protocols. This proactive measure aims to prevent such short circuits from impacting the driving experience and maintaining safety for the driver.

Recall Details:

Nissan has designated this recall as R23C6 and the National Highway Traffic Safety Administration (NHTSA) has assigned the campaign number 23V-657 to this recall.

Nissan Leaf EV Unintended Acceleration

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Nissan North America, Inc. (Nissan) is taking action to address a safety matter related to certain 2018-2023 LEAF EVs. These Electric Vehicles could experience unintended acceleration. This issue came to Nissan’s attention during internal testing in December 2021 when a trial vehicle showed a motor torque deceleration delay following the deactivation of Intelligent Cruise Control.

To tackle this problem, Nissan conducted computer simulations, analyzing data from the test vehicle, in an effort to replicate the condition. After several tests, they identified a specific sequence of actions that could potentially lead to the reported phenomenon, although they were unable to recreate the issue on an actual vehicle.

To ensure the safety of their customers, Nissan continued their efforts to replicate the phenomenon under real-world conditions. After extensive computer simulation and on-track testing, they determined that the following sequence of actions must be completed in under eight (8) seconds for the unintended acceleration to occur:

1. Disengage Cruise Control, Intelligent Cruise Control, or ProPILOT Assist.
2. Immediately after disengagement, shift drive modes from ‘D’ to ‘B’ or ‘ECO’, or activate e-Pedal ‘ON’.
3. Press the accelerator pedal and then release it.

Nissan’s evaluation of the risk associated with this issue in real-world driving conditions is very low, as it has not occurred outside of controlled track or simulated test environments. However, taking a cautious approach, Nissan decided to conduct a recall campaign to reprogram the Vehicle Control Module (VCM) as a preventive measure.
For clarification, the ‘B’ mode engages the regenerative braking system more aggressively on downhill slopes, reducing the need for excessive brake use. This mode is manually selected by shifting from ‘D’ to ‘B’ using the shift lever.

To address the issue, Nissan dealers will reprogram the Vehicle Control Module (VCM). You can refer to Nissan’s recall number for this action, which is R23A6, and the corresponding NHTSA campaign number, which is 23V-494.

Crankshaft Position Sensor Failure

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Fiat Chrysler Automobiles (FCA) has recently taken action to address a potential problem that may affect certain 2014-2019 Ram 1500 trucks and 2014-2020 Jeep Grand Cherokee SUVs. The issue involves an unexpected engine stall, which could pose a safety risks to vehicle owners.

In May 2023, the FCA Technical Safety and Regulatory Compliance (TSRC) organization initiated an investigation into certain models manufactured between 2014 and 2019 for Ram 1500 trucks and between 2014 and 2020 for Jeep Grand Cherokee SUVs. The focus of the investigation was on vehicles equipped with 3.0L Diesel engines. It was discovered that these particular vehicles had a tone reluctor wheel with an insufficient bond between the magnetic coating and the tone wheel body. Upon analyzing the stall patterns and reviewing vehicle history, it was determined that the affected vehicles were those manufactured with Gen II 3.0L diesel engines, and the crankshaft tone wheel was identified as the source of the stalls.

According to the defect report, the magnetic material attached to the reluctor wheel provides a crucial signal to the crankshaft position sensor. When this signal is lost, the engine’s ability to synchronize injector pulses and cam timing is compromised. Consequently, the loss of the crankshaft position can lead to an engine stall, leaving the vehicle unable to restart.

To address this issue, FCA will be updating the powertrain control module software to ensure that vehicle propulsion is maintained even in the event of a lost crankshaft position signal. By reading the camshaft position signal, the updated software will mitigate the risk of engine stalls.

As part of the recall process, FCA has assigned the number 66A to this specific recall, while the NHTSA campaign number is 23V-411. It is important to note that this recall represents an expansion of a previous recall, namely recall 20V-475.

FCA US will be contacting vehicle owners to ensure that they are informed about the issue and the necessary steps to resolve it. The company is aware of 10 customer assistance records, 611 warranty claims, and three field reports that may be associated with this particular issue.

Ram 1500 Engine Stall Due To PCM Issue

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Chrysler (FCA) has recently made an announcement to the public regarding the recall of certain 2021 Ram 1500 vehicles. The reason behind the recall is an unexpected engine stall issue that has been identified in some of the vehicles equipped with 5.7L eTorque engines. An engine stall can cause an increased risk of an accident, which can be life-threatening.

FCA’s Technical Safety and Regulatory Compliance (TSRC) organization initiated an investigation into the matter in January 2023, after receiving several reports regarding the potential stall condition in a 2021 Ram 1500 equipped with the 5.7LeTorque engine. The investigation revealed that the Powertrain Control Module (PCM) software was the root cause of the stall pattern in the affected vehicles.

The vehicles that were manufactured between June 3, 2020, and September 12, 2021, have been identified to have defective powertrain control module software, which can cause an incorrect fuel mixture condition in the engine and eventually result in an engine stall.

Chrysler is notifying owners to bring their vehicles in for repair. According to the defect report, the company has identified 206 customer records, 636 warranty claims, and 53 field reports related to this issue. This recall is expected to affect a significant number of vehicles, and Chrysler is urging all affected vehicle owners to take immediate action to prevent any potential accidents or harm.

If you are an owner of one of the affected vehicles, you are entitled to a free repair. Under the Lemon Law, manufacturers are required to replace or refund the purchase price of a vehicle that has a recurring defect that cannot be repaired within a reasonable number of attempts. If your vehicle is affected and the repair is not successful, you may be eligible for a refund or replacement under this law.

The affected vehicles will be repaired by updating the Powertrain Control Module calibration software. The recall number for this specific recall is 37A, and the NHTSA campaign number is 23V-265. It is important to act immediately if you are an owner of one of these vehicles to avoid any potential safety risks.