Peter Altmaier told Germany's ARD television the EU faced a difficult situation.
"We must therefore try to get to a fair solution in negotiations between the Europeans and Americans," he said.
Although the EU has called for a permanent exemption from the tariffs, arguing the one-month extension is causing uncertainty among businesses, there are differences in emphasis among member states.
Germany wants a broad agreement to lower tariffs across a broad spectrum of products, especially in manufacturing.
It insists, however, that it can only discuss this if it has assurances that the EU will be permanently excluded from unilateral tariff increases.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)