Answer:
Toyoda and the subcontractors.
Explanation:
According to UCC Article 2, both the manufacturer and the subcontractor are liable for any damage caused by any defects.
This situation happened (and continues to happen) with the Takata airbag recall, where several car manufacturers and Takata were liable for defective airbags. Takata already filed for bankruptcy, so the car manufacturers deal with the recalls themselves. Both of them are liable for the defective airbags even though Takata manufactured them.