Japan's newly appointed Economics Minister Nobuteru Ishihara walks into Japan's Prime Minister Shinzo Abe's official residence in Tokyo, Japan, January 28, 2016. REUTERS/Yuya Shino

TOKYO (Reuters) - Japanese Economy Minister Nobuteru Ishihara said on Friday he had no comment on tweets by U.S. President-elect Donald Trump about Toyota Motor Corp 7203.T before Trump takes office.

Trump threatened in a tweet to impose heavy taxes on the automaker if it builds its Corolla cars for the U.S. market at a plant in Mexico.