Car manufacturer BYD has officially recalled 89,811 units of the Qin Plus DM-i model for a safety review procedure in the Asian market. The measure meets the requirements of local regulatory bodies after the identification of a technical anomaly that compromises the proper functioning of the internal energy storage components.
The call covers specific units that left the assembly lines over a period of almost three years. The detection of this problem occurred after internal quality control analyzes and reports of nonconformities in the manufacturing process, requiring a quick response from the company to avoid traffic incidents.
To mitigate risks to owners, the company structured an emergency action plan that involves both physical interventions at dealerships and the remote sending of data packages to the operating systems of affected cars, ensuring broad and efficient coverage of the notified fleet.
Technical details about the wiring harness defect
The root of the technical problem that motivated this mass recall lies in the assembly of the high voltage battery wiring harness. Relatórios technicians presented by the automaker indicate that there is a possibility that the component was positioned inappropriately during manufacturing, which could cause premature wear or excessive compression of the cables throughout the car’s useful life. Esta condition of continuous mechanical stress on the wiring creates a favorable scenario for the degradation of thermal and electrical insulation, exposing the system to critical failures during daily driving.
The direct consequence of this structural deterioration is a significant increase in the risk of internal short circuits. Caso If an electrical fault occurs while the vehicle is moving, the energy management system may enter protective mode, resulting in a sudden loss of driving force. In extreme situations, overheating caused by a short circuit in the wiring harness has the potential to initiate a thermal runaway process, increasing the risk of fire in the lower compartment of the chassis, where the energy cells are housed and protected.
Software update and physical repair procedures
To resolve the technical nonconformity, the manufacturer developed a repair strategy divided into two complementary stages. The first phase consists of releasing a software update via the internet, known as Over-The-Air, specifically targeted at the high voltage battery control module.
This new data package is designed to improve the vehicle’s thermal and electrical monitoring algorithms. With the update, the system now identifies abnormal voltage variations more quickly, issuing audible and visual alerts on the instrument panel before the physical wear of the harness reaches a critical operating point.
The second stage of the procedure requires the physical presence of vehicles in authorized workshops within the dealership network. Especialistas will perform a visual and tactile inspection of the wiring harness to assess the integrity of the material and the level of accumulated mechanical stress.
If any damage or wear to the insulation is detected, the component will be replaced in full, at no additional cost to the owners. Esta dual approach aims to ensure immediate safety through software and definitive resolution through specialized mechanical intervention.
Production history of units affected by the call
The batch of vehicles included in this safety campaign was produced in a very specific time frame, comprising units assembled between the months of January 2021 and September 2023. The Qin Plus DM-i model represents a fundamental portion of the manufacturer’s registration volume, appearing as one of the most popular plug-in hybrid sedans on the Asian market due to its energy efficiency. Accurate batch identification was only possible thanks to parts traceability systems implemented in factories, which allow chassis numbers to be cross-referenced with electrical component supply records. The precision in this survey prevents owners of vehicles outside the risk zone from being summoned unnecessarily, optimizing the service flow in workshops and ensuring that technical resources are directed exclusively to cars that actually present the vulnerability on the assembly line.
The manufacturer’s commercial performance in the Asian market
A recall operation of this magnitude comes at a time of high commercial performance for the automaker. Relatórios recent market reports indicate that the company has consolidated its leadership position in the new energy vehicle segment, surpassing the mark of 441 thousand automobiles sold in a single month of operation.
The significant sales volume is driven by an aggressive pricing strategy and the diversification of the product portfolio. The sedan lineup, which includes the affected model, has played a central role in attracting consumers looking to transition from traditional combustion engines to more efficient and cleaner propulsion systems.
Competitiveness in the automotive market requires manufacturers to maintain a fast pace of technological innovations and launches. However, the exponential increase in production volume also places additional pressures on supply chains and quality assurance protocols on high-speed assembly lines.
Monitoring protocols in the electrified car industry
The global transition to electric mobility has required automakers to develop new safety standards, especially with regard to the management of high-energy density batteries. Diferente of combustion vehicles, where the risks are mostly associated with the storage of liquid fuels, electric and plug-in hybrid cars depend on complex cabling networks and control modules operating under constant high voltage.
To mitigate risks of catastrophic failures, the industry has invested heavily in artificial intelligence and machine learning applied to onboard diagnostic systems. Essas technologies allow the vehicle to constantly monitor the health of power cells, cable temperatures and insulation integrity, anticipating mechanical or electrical problems before they result in unexpected stops or thermal events on public roads, ensuring the physical integrity of occupants.
Logistics of service to notified owners
The service operation for almost 90 thousand vehicles requires strong logistical coordination on the part of the after-sales network. The manufacturer started sending formal notifications to registered owners through registered letters, SMS messages, phone calls and direct alerts on the brand’s official smartphone app. Authorized dealers were instructed to reinforce spare parts stocks and extend workshop opening hours to accommodate the extra flow of appointments, with the aim of minimizing inconvenience for customers who depend on cars for their daily and professional journeys.
Government oversight of automotive quality
Supervision of vehicle safety campaigns in Ásia is rigorously conducted by state authorities, which require detailed reports on the causes of failures and the effectiveness of corrective measures. The formal registration of this procedure with regulatory bodies ensures that the manufacturer meets the legal deadlines for communicating to consumers and for carrying out repairs on the entire affected fleet.
This level of demand ensures that all companies operating in the world’s largest automotive market strictly follow national road safety standards. Transparency in conducting recalls is assessed by industry analysts as a determining factor in maintaining consumer confidence amid the rapid technological evolution of electrified vehicles and the introduction of new propulsion components.
