Toyota and Daihatsu have announced a temporary suspension of shipments for several models, impacting the Toyota Models List, following the discovery of procedural irregularities in Daihatsu’s safety testing. This decision comes after an independent investigation revealed misconduct concerning certification processes, raising concerns about vehicle safety and regulatory compliance. The suspension affects models currently in production and those previously discontinued, encompassing a wide range of vehicles, including some sold under the Toyota brand.
Background on Daihatsu Investigation and Findings
Daihatsu, a subsidiary of Toyota, commissioned an Independent Third-Party Committee to investigate reported procedural irregularities. The committee’s findings, delivered in December 2023, uncovered significant issues. Beyond previously reported irregularities concerning door linings (April) and side collision tests (May), the investigation identified 174 new cases of misconduct across 25 test categories. These newly discovered issues impact a total of 64 vehicle models and 3 engine types, including vehicles currently in production, under development, and those no longer being manufactured. Critically, 22 of these affected models, along with one engine type, are sold by Toyota.
Scope of Irregularities and Toyota’s Response
The breadth of the irregularities is extensive, spanning numerous testing categories and a significant number of models. In response to these findings, Daihatsu made the decisive move to temporarily halt shipments of all Daihatsu-developed models currently in production, both within Japan and in overseas markets. Toyota, as a direct consequence, has also initiated a temporary suspension of shipments for the Toyota models impacted by these irregularities. This coordinated action underscores the severity of the situation and the commitment of both companies to address the identified issues proactively.
Specific Model Concerns and Airbag Control Unit Issue
During the latter stages of the investigation, a particularly concerning detail emerged regarding airbag testing. It was found that a different airbag control unit (ECU) – not the one intended for mass production – was utilized in airbag tests for several models. These models include:
- Daihatsu Move / SUBARU Stella
- Daihatsu Cast / Toyota Pixis Joy
- Daihatsu Gran Max / Toyota Town Ace / Mazda Bongo
While technical verification confirmed that the airbag performance still met occupant protection standards, a potential non-compliance issue was identified in the side collision test for the Daihatsu Cast and Toyota Pixis Joy. Specifically, the “Safety Performance Standard for Occupant Evacuation (Unlocking)” may not have been met. Although there are no reported accidents linked to this specific issue at this time, thorough technical verification and cause investigation are underway to implement necessary corrective measures swiftly. This specific issue highlights potential risks within the Toyota Pixis models list and the Daihatsu Cast.
Reassurance on Other Performance Standards and Certification
For other identified irregularities, Daihatsu has affirmed that the performance standards mandated by regulations are indeed met. Furthermore, the validity of the verification results and the overall process has been independently corroborated by TUV Rheinland Japan (TRJ), a recognized third-party technical service organization. This external validation provides some level of assurance regarding the performance of affected vehicles in areas beyond the identified irregularities.
Toyota’s Commitment to Reform and Daihatsu Revitalization
Toyota acknowledges the gravity of the situation, recognizing that Daihatsu’s lapse in certification processes has undermined the fundamental principles of an automobile manufacturer. Since 2013, Toyota has increased its reliance on OEM models from other companies, particularly in the compact vehicle segment. Toyota expresses regret that this development might have placed undue pressure on Daihatsu and that they were unaware of the challenges within Daihatsu’s certification operations.
Moving forward, Daihatsu has committed to full transparency with regulatory authorities and will take appropriate actions under their guidance. A comprehensive investigation into potential similar cases is also underway to prioritize customer safety above all else. Toyota has pledged its full cooperation in this investigation and, crucially, will provide extensive support for Daihatsu’s revitalization. This revitalization effort is envisioned as a fundamental reform, requiring a deep review of management, business operations, organizational structure, human resource development, and employee awareness. Toyota aims to support Daihatsu in returning to its foundational role as a “compact mobility company” and regaining the trust of all stakeholders.
