Tag Archives: Brake Problems

Unexpected ABS Activation In 2024 Acura ZDX All-Wheel Drive Vehicles

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In a concerning development for Acura ZDX All-Wheel Drive owners, a potentially dangerous issue has been identified within certain 2024 models. The problem, rooted in the vehicle’s anti-lock brake system (ABS), could lead to unexpected activation of the ABS, causing a release of brake pressure that significantly diminishes braking performance. This defect poses an increased risk of accidents, particularly during specific low-speed braking events.

The problem first came to light in July 2024 when Honda, Acura’s parent company, was notified by General Motors (GM) about the issue. GM had received reports of two minor accidents, both allegedly linked to a sudden loss of braking, which were suspected to be caused by a software glitch in the ABS. In addition to these accidents, GM also reported a field complaint regarding the issue, though no accident had occurred in that instance.

Honda quickly launched an investigation into the matter. Upon closer examination, it was discovered that the issue was indeed related to a defect in the anti-lock brake system. Specifically, during certain braking events at speeds below 25 mph on dry surfaces, the ABS may activate with undue sensitivity. If this occurs and a specific sequence of wheel movements follows, the ABS will continue to release brake pressure in the service brake system. The result is a dramatic reduction in stopping performance, or in some cases, a complete failure of the brakes, greatly increasing the risk of a crash.

After confirming the defect, Honda determined that it posed a significant safety risk and initiated a safety recall. The company has emphasized that, as of now, no warranty claims, field reports, or incidents involving injuries or crashes related to this defect have been reported in Acura vehicles.

Affected vehicle owners will be notified of the recall and instructed to perform an iN VIN status inquiry to verify if their vehicle is eligible for the update. This notification is crucial for ensuring that all potentially affected vehicles, including those in new or used vehicle inventories, are addressed promptly.

To resolve this issue, Acura will be updating the electronic brake control module software. This update will be delivered either through an over-the-air (OTA) update or by visiting an Acura dealership. The update is designed to correct the sensitivity of the ABS, preventing the unexpected release of brake pressure and restoring normal braking function.

Acura has designated this recall with the internal number UJE, while the National Highway Traffic Safety Administration (NHTSA) has assigned it the campaign number 24VC-614.

Owners of the 2024 Acura ZDX All-Wheel Drive are urged to check whether their vehicle is affected by this recall. If you own one of these vehicles, it’s important to respond to the recall notice and ensure that the necessary software update is performed as soon as possible. This proactive step will help avoid the risks associated with the ABS defect and ensure your vehicle operates safely.

Cadillac Lyriq Defective Brake Performance

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A potential safety issue has been identified in certain 2023-2024 Cadillac Lyriq all-wheel-drive vehicles. This defect could affect the vehicle’s braking performance, posing a risk to drivers and passengers.

The investigation into this issue began in May 2024, when General Motors (GM) received reports of two minor accidents allegedly caused by a sudden loss of braking. Both incidents were suspected to be linked to a software problem within the vehicles’ Anti-lock Braking System (ABS). In addition to these accidents, GM was also alerted to a separate field complaint that, while not resulting in an accident, seemed potentially related to the same problem.

To get to the bottom of the issue, GM’s investigation team gathered and analyzed field data from various sources. Despite the initial reports, they found no additional cases that could be connected to this defect. However, through careful analysis, they determined that the problem could indeed occur, but only in extremely rare situations. Specifically, the issue arises when a false ABS event occurs on a dry road at speeds under 25 mph. During this event, if a particular series of wheel movements takes place, the ABS system might continue to release brake pressure in the vehicle’s service brake system, even when it shouldn’t.

Fortunately, GM has confirmed that no injuries or fatalities have been associated with this condition. However, given the potential risk, GM’s Safety Field Action Decision Authority (SFADA) decided in August 2024 to issue a safety recall for the affected vehicles.

The defect report explains that under certain rare braking conditions on dry surfaces at speeds below 25 mph, the ABS may become overly sensitive. If the ABS falsely activates and a specific sequence of wheel movements occurs, the system might continue to release brake pressure, which can significantly reduce the effectiveness of the service brakes. This could lead to a reduction in stopping performance or even cause the brakes to become inoperative, thereby increasing the risk of a crash.

To address this issue, GM has made an update to the electronic brake control module software. This update can be installed either through an over-the-air (OTA) update or by visiting a GM dealership. If you own one of the affected vehicles, GM urges you to take action as soon as possible. The recall number for this issue is N242453471, and the National Highway Traffic Safety Administration (NHTSA) campaign number is 24V-598.

RAV 4 SUV Squeaks And Brake Problems

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The Toyota RAV4 is known as a compact SUV renowned for its dependable performance, adaptability, and impressive fuel efficiency. While it has earned a commendable reputation overall, certain model years have seen reported issues, prompting owners to navigate through a spectrum of challenges.

Some common problems experienced by RAV4 owners include:

Brake problems emerge as a recurring concern among RAV4 drivers, including issues such as premature brake pad and rotor wear, disconcerting brake noises, and unsettling brake fluid leaks. These problems not only compromise safety but also demand timely intervention from skilled mechanics to conduct thorough inspections and execute requisite repairs. The intricate interplay of brake system components necessitates meticulous attention to detail to ensure optimal functionality.

Another issue encountered by RAV4 owners revolves around squeaking noises emanating from various areas of the vehicle. These auditory disturbances could originate from suspension bushings, brake pads, or even interior trim pieces, confounding both drivers and mechanics alike in their quest for pinpointing the exact source. Addressing squeaking noises entails a systematic diagnostic approach, coupled with the technical acumen to remedy underlying causes effectively.

Transmission issues represent a notable headache for certain RAV4 owners, manifesting in the form of erratic shifting patterns, disconcerting hesitation, or ominous slipping sensations. Tackling these transmission problems often entails a multifaceted approach, including fluid replenishment, software updates, and in more severe instances, complete transmission overhauls.

Electrical problems cast a shadow of uncertainty over RAV4 ownership experiences, as drivers contend with an electrical system susceptible to a myriad of maladies. From temperamental sensors to glitchy infotainment interfaces and vexing electrical shorts.

Certain RAV4 models have encountered engine-related issues, ranging from excessive oil consumption and rough idling to outright engine stalling. These afflictions, though relatively rare, underscore the imperative of adhering to stringent maintenance protocols and promptly addressing emerging issues to safeguard the longevity and performance of the vehicle’s powerplant.

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.

Ford F-150 Unintended Activation of Electric Parking Brake

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Ford has been monitoring certain 2021-2023 Ford F-150 trucks equipped with single exhaust systems due to potential issues with the electric parking brake. Reports have surfaced indicating an unexpected activation of the parking brake, sparking concern among owners and the automaker alike. In response, Ford’s Critical Concern Review Group (CCRG) launched an investigation to assess the problem’s magnitude and potential root causes.

The initial investigation began after Ford received troubling reports of unintended parking brake application on a 2021 model year F-150 truck. Warranty and field reports revealed signs of damage to the wiring harness housing the rear electric parking brake circuits. Such damage raised red flags, necessitating a closer look to ensure the safety and reliability of these vehicles.

Looking deeper into the issue, Ford’s team of experts discovered that the damaged wiring was a component of the rear axle wiring harness assembly. This particular harness assembly not only houses wires for the rear electric parking brakes but also serves other essential electrical components. The investigation highlighted that, in certain scenarios, the rear axle wiring harness bundle could make contact with the rear axle housing, leading to chafing of the wiring bundle.

Over time, this chafing effect could wear through the abrasion-resistant tape and circuit insulation, ultimately exposing the underlying copper wiring. The consequence of this exposure could be the grounding of circuits on the rear axle housing, which in turn could cause unintended activation of the electric parking brake. Adding to the complexity, corrosion on the rear axle housing could accelerate the abrasion process, compounding the problem.

Ford’s engineering team took the investigation further by conducting comprehensive vehicle-level testing and data analysis. The goal was to understand the implications of damaged circuits within the wiring harness bundle. They discovered that if the low side electric parking brake motor circuit experienced a short to ground, it could trigger the unintended activation of the electric parking brake, potentially leading to hazardous situations.

Ford are initiating a recall to resolve this issue. Owners of affected vehicles will receive official notices instructing them to take their vehicles to authorized Ford or Lincoln dealers for thorough inspections of the rear axle wiring harness.

During the inspection, if the technicians observe any wear on the abrasion tape covering the wire bundle, the suspect harness will be replaced with a new service harness. In cases where the abrasion tape shows no signs of wear, the dealer will take preventive measures by installing a protective tie strap and tape wrap, ensuring the wiring remains secure and safeguarded against future issues.

Ford is aware of 918 warranty and three field reports in North America for the wire chafing condition. Of these reports, 299 indicated that the electric parking brake had unintended activation, of which nineteen (19) allege electric parking brake application while driving. Ford has assigned a recall number to this campaign, which is 23S35. Additionally, the National Highway Traffic Safety Administration (NHTSA) has designated the campaign as number 23V-509.

Honda and Acura Potential Brake Issues

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Honda and Acura have identified a potential issue related to the tie rod fastener in certain vehicle models. This manufacturing concern could lead to the separation of the brake master cylinder from the booster assembly, compromising brake function and potentially increasing the risk of accidents.

The following Honda and Acura vehicle models have been identified as being potentially affected by this recall:

2020-2021 Honda Civic
2020-2023 Honda Ridgeline
2021-2023 Honda Passport
2021-2022 Honda Pilot
2020 Acura MDX

Honda first became aware of the problem in December 2020 when a missing nut was discovered in the brake booster tie rods. The company notified the component part supplier and initiated an investigation to identify the root cause. The investigation revealed that the brake master cylinder may have been improperly fastened to the brake booster assembly during the manufacturing process, resulting in the presence of loose or missing tie rod nuts. This assembly flaw could potentially lead to the breakage of tie rod studs, causing the brake master cylinder to separate from the brake booster assembly.

Potential Consequences and Safety Concerns: In the event of a separation between the brake master cylinder and the brake booster assembly, drivers may experience diminished or complete loss of brake function. This compromised braking capability significantly increases the risk of accidents and injuries. Recognizing the seriousness of the situation, Honda has taken immediate action to address the issue and ensure the safety of its customers.

Recall and Repair Process: As a proactive measure, Honda has issued a recall for the affected vehicles. Authorized dealerships will inspect the brake booster assembly and perform the necessary repairs to rectify any potential issues. To facilitate the recall process, Honda has assigned the following identification numbers: VEU, AEV, and ZET. Additionally, the National Highway Traffic Safety Administration (NHTSA) has assigned the campaign number 23V-458 to this recall.

2023 Nissan Leaf EV Brake Line Damage

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Nissan has determined that certain 2023 model year Nissan Leaf EVs may have a damaged right hand brake tube that could result in a brake fluid leak.

Nissan first became aware of the potential problem in January 2023 when a Nissan technician noticed a 2023 Nissan Leaf EV being assembled with a damaged right hand brake tube assembly. Nissan collected the affected parts and began an investigation. The investigation included a parts audit of 975 brake assemblies which revealed twenty-five (25) damaged right hand brake tubes at the actuator connection bend. Nissan also conducted a yard audit of 395 vehicles and found five (5) with a scratched or damaged right hand brake tube. These parts were quarantined and the vehicles were put on a quality hold.

According to the defect report, an investigation with the supplier determined that the incorrect tooling was used to align the brake tube into the pipe bending jig. Because the brake tube was misaligned, the tooling clamped the pipe in the incorrect position and caused scratching, and in some cases deformation of the tube, at the actuator bend.

Nissan performed corrosion and stress tests on two (2) of the worst case condition parts to evaluate the effect of the damaged brake tube on brake performance over time. Nissan concluded that the brake performance could be degraded and could lead to extended stopping distances possibly without prior warning. Nissan decided to conduct a Voluntary Safety Recall to recall all potentially affected LEAF vehicles to inspect the right-hand brake tube and replace any damaged brake tube assemblies.

Owners receiving notices will be asked to return to their dealers to have the right-hand brake tube inspected for damage. If damage is found, the affected brake tube will be replaced. Nissan’s number for this recall is PC976 and the NHTSA campaign number is 23V-362.

2023 Ford Bronco Sport ABS Module Leak

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Ford will be asking the owners of certain 2023 Bronco Sports vehicles, to return to their dealerships to repair a problem that could lead to unexpected brake problems. Ford used supplier records to determine the population of affected vehicles in which the problematic Anti-lock Braking Systems (ABS) is installed. (Component Part Number: LX6C-2B373-LG)

In December 2022, Ford was contacted by the manufacturer of their ABS, about a quality issue affecting the Hydraulic Control Unit (HCU) of an Electronic Brake Booster (EBB). According to the defect report, a foreign object was introduced into the tool that assembles the Normally Closed (NC) valves used in the ABS Module. This object could create a “flat spot” damage to the ball which creates the seal. This damage could allow an unintended leak path through the valve. If the valve leaks, the driver may experience inconsistent brake pedal travel without warning. Additionally, the driver-selectable Auto Vehicle Hold feature may not operate as intended. The vehicle could creep unexpectedly after an auto-hold event is initiated.

Owners who receive notices will be asked to return to their dealerships to have the ABS module replaced. Ford’s number for this recall is 23S01 and the NHTSA campaign number is 23V-021.

This is the third recall affecting the 2023 Ford Bronco Sport. In November 2022, Ford recalled half a million 2020-2023 Escape and 2021-2023 Bronco Sport vehicles equipped with 1.5L engines. A fuel injector may crack and leak fuel inside the engine compartment and cause an under hood fire. (NHTSA Campaign Number: 22V-859)

In September, Ford recalled 2022-2023 Bronco Sport and 2022 F-150 vehicles because the parking lights may flicker during any of the three following scenarios. (NHTSA Campaign Number: 22V-859)

  • Scenario 1: When the customer manually selects the “position lamp on” mode.
  • Scenario 2: When the customer manually selects “Headlamp On” Mode.
  • Scenario 3: When the customer is driving in automatic headlamp mode, and the environment gets dark enough to trigger “Night Mode”, which turns on the headlamp and parking lamp function.