The latest settlement, on top of a $16.4 million fine Toyota paid earlier in a related investigation, brings the total penalties levied on the company to $48.8 million. It caps a difficult year for the world's No. 1 automaker, which recalled more than 11 million vehicles globally since the fall of 2009 as it scrambled to protect its reputation for safety and reliability.
Toyota will be making the payment without admitting to any violation of U.S. laws.
The Associated Press contributed to this story.