The statement confirms that Nair was investigated for "inappropriate behavior", but beyond that we don't have any information as to what caused Nair's termination.
Ford has not yet announced who will replace Raj Nair, but it seems unlikely that Ford management made this decision without having someone lined up to take that key role in the company's corporate structure.
Nair was named Ford's executive vice president and head of North America on June 1, 2017.
A company statement quoted Nair as regretting that he has not exhibited leadership behavior consistent with company principles.
In August, Ford agreed to pay up to US$10.125 million to settle an investigation into sex and race harassment at two plants in Chicago conducted by the US Equal Employment Opportunity Commission (EEOC).
Ford Motor Co. has ousted one of its top executives over allegations of inappropriate behavior. "Ford is deeply committed to providing and nurturing a safe and respectful culture and we expect our leaders to fully uphold these values".
Hackett, who joined Ford last May, warned employees at the end of a year ago that Ford had no tolerance for misconduct after The New York Times documented instances of sexual harassment at two plants in Chicago.
This comes as a shock, as Nair has been with the company since 1987, previously serving as the vice president of product development since 2015. Nair then expressed faith in the company's employees and wished them success in the future.
She told the Reuters news agency: "Investors and analysts have been unhappy with the seeming lack of a clear direction for Ford, especially in terms of future mobility services".
In extended trading on Wednesday, Ford shares were unchanged from their official close of US$10.60.