Editor's note: A previous version of this report incorrectly said Kyung Soo Lee was interim U.S. head of Hyundai Motor America before taking the post permanently. It has been updated.
A little over a year after taking the helm, Hyundai Motor America CEO Kyung Soo Lee has left the position to return to South Korea as an adviser for the company.
Hyundai did not name a replacement and did not elaborate on when the position will be filled, spokesman Yong Sohn in Seoul said Monday.
Sohn said it was "part of a regular groupwide personnel change."
Lee, who goes by "Kenny," took the lead of Hyundai's operations in the U.S. in September 2017. He filled a post formerly held by Dave Zuchowski, who was fired in December 2016 for failing to meet internal sales targets. Jerry Flannery was the interim head before Lee took the position.
Lee's departure comes as Hyundai confronts mounting pressure to address reports about noncollision engine fires in some of its vehicles.
The Center for Auto Safety has urged Hyundai and its Kia sibling brand to recall almost 3 million crossovers and sedans for potential fires that could erupt while people are driving. Meanwhile, Congress has invited on the regional CEOs of Hyundai and Kia to appear Nov. 14 before the Senate Commerce Committee, the same panel that grilled Mary Barra over faulty ignition switches just weeks into her tenure as General Motors CEO.
Last week, the global CEOs of both companies pledged their cooperation with regulators in addressing concerns but said it was still undecided whether their U.S. representatives would go before lawmakers in Washington.