Ford Motor Company (Ford) is taking action to address a safety concern with specific 2020-2022 Lincoln Aviator and 2020-2022 Ford Explorer vehicles that are equipped with 3.0L PHEV (Plug-in Hybrid Electric Vehicle) engines. These vehicles may have a manufacturing defect in one or more of the high voltage battery cells, which could lead to an internal short circuit and a potential battery fire.

Discovery of the Issue

Ford became aware of this issue in June 2023 when they received a report regarding thermal venting problems with the PHEV battery used in these vehicles. The report highlighted a 2021 model year Transit Custom in France experiencing PHEV battery thermal venting. Subsequent analysis, conducted by the battery cell supplier, revealed an internal short circuit in the vehicle’s high voltage battery pack, partly due to the presence of a folded anode tab, which occurred during the cell manufacturing process.

Ongoing Investigation

The supplier’s investigation indicated that another, as yet unidentified, factor is necessary for the folded anode tab condition to lead to battery thermal venting. The supplier is actively conducting component-level testing to pinpoint this second factor. While this factor remains unknown, the Ford Critical Concern Review Group (CCRG) has been working to identify the group of vehicles that may potentially have the cell folded anode tab condition.

Additional Incidents

Ford was aware of three more instances of cells with folded anode tabs in the field. These incidents involved a 2020 model year Aviator in the United States, resulting in PHEV battery thermal venting, another 2020 model year Aviator in the United States resulting in a Malfunction Indicator Light (MIL) but no battery thermal venting, and a 2020 model year Aviator in Canada, also resulting in an MIL but no battery thermal venting.

Preventive Measures

To address this issue, Ford has reviewed the cell supplier’s manufacturing process and made improvements during cell production to reduce the occurrence of the folded anode tab condition. The timing of these process enhancements has been used by the CCRG to determine the affected population of vehicles.

Recall Procedure

Owners of the affected vehicles will be notified and requested to visit their authorized Ford dealers for a Battery Energy Control Module (BECM) diagnostic test. If the test identifies a battery problem, the high voltage battery pack will be replaced at no cost to the owner. To check if your vehicle is part of this recall, refer to Ford’s recall number 23S53 and the NHTSA campaign number 23V-626.

ford-mustang-mach-e

In the realm of electric vehicles (EVs), the 2021-2022 Ford Mustang Mach-E gained significant attention for its sleek design and promising performance. However, beneath its exterior allure, a complex challenge emerged that put the spotlight on battery-related issues. In June 2022, Ford Motor Company took steps to issue a safety recall (NHTSA Recall 22V-412) for a range of Mustang Mach-E vehicles, acknowledging battery problems that had the potential to impact both safety and performance.

2021-2022 Ford Mustang Mach-E Battery Recall

The safety recall was prompted by concerns related to high voltage battery main contactors. These components, integral to the functioning of the vehicle’s battery system, were at risk of overheating. The primary culprits behind this issue were the effects of direct current (DC) fast-charging and frequent aggressive acceleration events, which placed excessive stress on these contactors. Overheating, led to arcing or deformation of the electrical contact surfaces. Perhaps the most alarming consequence was the potential for a contactor to remain open, resulting in a sudden loss of motive power during driving. This raised significant safety concerns due to the increased risk of accidents resulting from unexpected power loss.

The Office of Defects Investigation

The recall was further complicated by the involvement of the Office of Defects Investigation (ODI). Following the initial recall (22V-412) involving approximately 48,924 vehicles, the ODI received a series of consumer complaints. These complaints highlighted incidents of high voltage battery main contactor failures even after the prescribed remedy had been implemented. This indicated that the initial software updates, aimed at temperature monitoring and power reduction, might not have fully resolved the underlying issues. This discrepancy called into question the effectiveness of the initial recall and the adequacy of its remedy.

Ford’s Response

In response to the ongoing concerns, Ford issued a Technical Service Bulletin TSB 23-2020 which focused on replacing the High Voltage Battery Junction Box (HVBJB) in the affected vehicles. The HVBJB is a crucial component that facilitates the connection between various parts of the high voltage battery system. Consumers who had experienced a loss of motive power post the initial recall were directed towards this bulletin. The bulletin aimed to ensure that the remedy for the contactor failures was comprehensive and addressed any lingering issues.

Addressing The Problem

The complexity of addressing battery-related problems in the 2021-2022 Ford Mustang Mach-E underscored the challenges of integrating advanced EV technology into mainstream vehicles. The initial recall and its subsequent developments shed light on the interplay between software solutions and hardware replacements. While software updates were intended to mitigate the risks, the need for a hardware replacement (HVBJB) became evident as consumer complaints persisted.

Conclusion

The battery problems encountered by the 2021-2022 Ford Mustang Mach-E vehicles served as a valuable lesson for both automakers and consumers in the evolving world of electric vehicles. The recall (22V-412), the Office of Defects Investigation’s involvement, and Ford’s multi-faceted response emphasized the importance of thorough and quick problem-solving in this rapidly advancing domain. As the automotive industry continues to innovate, experiences like these pave the way for safer and more reliable electric vehicles in the future.

2021-2022 Ford Mustang Mach-E Lemon Vehicle

If you find yourself grappling with persistent issues in your 2021-2022 Ford Mustang Mach-E vehicle, the California Lemon Law can offer you a potential lifeline. Designed to protect consumers from purchasing or leasing defective vehicles, this law provides a pathway to relief if your vehicle is deemed a “lemon.” If your Mustang Mach-E experiences substantial defects that impair its use, safety, or value, and these issues persist despite a reasonable number of repair attempts within the vehicle’s warranty period, you may be entitled to a replacement vehicle or a refund of the purchase price. The California Lemon Law serves as a crucial safeguard, empowering you to take decisive action to address your vehicle’s ongoing problems and helping you move forward with confidence.

Ford will be contacting the owners of certain 2021-2022 Mustang Mach E vehicles because the high voltage battery in their cars may overheat. The problem may lead to loss of power and could increase the chance of an accident.

Ford’s Critical Concern Review Group first became aware of the problem in April 2022, after hearing of an issue pertaining to the high voltage battery main contactor overheating in a Mustang Mach E. A review of warranty reports found approximately 286 warranty claims where the problem was an open or welded battery contactor. According to the defect report, it is possible that the high voltage battery main contactors may overheat, which can result in an open contactor or a welded condition.

Contactors that are welded shut while driving, will result in an illuminated powertrain malfunction warning light on the next drive cycle, along with a no-start condition.

Contactors that become open while driving, will result in a powertrain malfunction warning light, the vehicle will display “Stop Safely Now” on the instrument panel, and the vehicle will lose power.

In both cases, all 12V systems including power brakes and steering will remain functional.

Ford will correct the problem by installing a Secondary On-Board Diagnostic Control Module (SOBDMC) and updating the Battery Energy Control Module (BECM) software. Ford is expected to begin Over-The-Air (OTA) updates for the SOBDMC and BECM software in July 2022. Owners will also have the option to take their vehicle to a Ford or Lincoln dealer to have the software update completed.

The updated SOBDMC software (LJ98-14G069-AXG, LJ98-14G069-AZG, LJ98-14G069-BBG, LJ98-14G069-BDG) will monitor contactor temperature and intelligently reduce battery power to prevent damage to the contactor. The updated BECM software (NJ98-14C197-AE, NJ98-14C197-BD) will monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage.

Ford’s number for this recall is 22S41 and the NHTSA campaign number is 22V-412.

Ford is studying new technology that would allow drivers to communicate with our country’s electric power grids. This would make battery charging for vehicle reasonable and very easy to do. This is an effort by Ford and the utility companies to prepare an infrastructure to handle them.

Ford plans to have its electric Focus compact car available in 2011. They are testing plug-in hybrids in California to see how drivers can recharge their batteries from an electrical home outlet. It will be important to make use of the off peak hours for electrical use.

They are also changing their existing in car communication system, SYNC, so it can alert drivers when to recharge. Ford is working on having the ability to communicate directly with electric grids to prepare the home for the charging process.

Think that your vehicle may be a lemon? Call the California Lemon Law Firm, Delsack and Associates for a Free review. Call toll free 888-395-3666 (888-Ex-Lemon).