Ford Motor ousted one of its most senior officials on Wednesday over what it called “inappropriate behavior,” adding to the turmoil at a company already struggling to lift its profits and plot a new strategic course.

The official, Raj Nair, had been an executive vice president and the head of Ford’s North American operations since June. He had previously served as Ford’s chief technology officer during his three-decade career with the automaker.

“We made this decision after a thorough review and careful consideration,” Ford’s chief executive, Jim Hackett, said in a statement released by the company. “Ford is deeply committed to providing and nurturing a safe and respectful culture, and we expect our leaders to fully uphold these values.”

In recent months, there has been a wave of dismissals and resignations of powerful corporate officials after revelations about workplace misconduct, including sexual harassment. Mr. Nair’s departure from Ford is one of the most prominent ousters outside the media and entertainment industries.