All of the major assembly lines will be shut down across its four directly-run plants, and Toyota will be halting production in stages at other group companies as well.

According to the Nikkei Asian Review, most of the Toyota group in Japan will be effectively shut down through at least the end of this upcoming week, with a production loss of as many as 50,000 vehicles, including brands such as Prius, Lexus, and Land Cruiser.

"Decisions regarding recommencement of operations at plants in Japan will be made on the basis of availability of parts," the company said in its announcement.