While the magnets were sourced from Japan and China, the resulting supply issue for Aisin was global, the person said. Similarly, the Toyota group's top components maker, Denso, has been affected by bottlenecks at second- and third-tier suppliers that caused delays with deliveries of its inverters, another person said. Inverters convert the battery's current and are used to control the motor. Faced with component shortages, Toyota may look to other suppliers besides Denso in India, and is considering making inverters in the country, two of the people told Reuters. Toyota didn't address Reuters' questions about specific suppliers. Aisin and Denso declined to comment. Reuters reported last year that Toyota was moving to convert most or all of its line-up to hybrid-only vehicles, which could put more pressure on suppliers.