"We have a great interest in Turkey's stability, also its economic stability. On the other hand, I think that Turkey is capable of making necessary decisions to restore stability," Maas said.
He made the remarks ahead of a visit by Turkish Treasury and Finance Minister Berat Albayrak to Berlin later on Friday.
Several media outlets reported early this month that the German government was examining ways to support Turkey's economic stability, amid worries at markets after currency falls and exchange rate fluctuations.
Maas said his visit to Turkey early this month was the beginning of a new process of improving ties between Berlin and Ankara, and stressed that high-level visits will continue in the coming days and weeks.
"It think it is much better if we engage with each other and talk to each other, instead of talking about each other," he said.
Turkish President Recep Tayyip Erdoğan is scheduled to pay a key visit to Germany on Sept. 28-29.
Germany's Economy Minister Peter Altmaier, a close ally of Chancellor Angela Merkel, will also travel to Turkey next month, with an 80-member business delegation of leading enterprises.
Political relations between Ankara and Berlin suffered several setbacks in the past two years, but both sides took steps in the recent months towards normalization of ties.
EU heavyweight Germany remains Turkey's main economic and trade partner. In 2017, the bilateral trade volume reached €37.6 billion ($43.6 billion).
