Toyota has resumed operations at production lines in Japan following suspension earlier this week after an explosion at an Aisin Seiki supplier facility that provides it with braking systems parts.

Reuters reported that Toyota said that it had already restarted some lines by late afternoon on Wednesday, and added that all lines affected by the supply shortage, including those at its Motomachi and Takaoka plants in Aichi Prefecture, would resume on Thursday.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The report said the explosion earlier this week was at a plant operated by Aisin Advics Co in Aichi Prefecture. The Aisin Seiki group company manufactures braking systems and is a major supplier to Toyota. Local media reports said that four people were sent to the hospital and one person was seriously injured by the blast.

This week's disruption follows similar recent disruptions to Toyota's supply chain caused by exceptional circumstances and highlights one disadvantage that comes with its lean manufacturing model: the supply chain can break.

Just Auto Excellence Awards - Nominations Closed

Nominations are now closed for the Just Auto Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Continental has secured the Window Displays Innovation Award in the 2025 Just Auto Excellence Awards for its Window Projection solution, transforming side windows into dynamic, data-rich canvases. Discover how this compact projection technology and intelligent software are reshaping in-car UX and opening fresh revenue streams for OEMs and mobility providers.

Discover the Impact