U.S. safety regulators opened an investigation into two 2013 Nissan Motor Co. models, the Nissan Pathfinder and Infiniti JX35, after consumers complained that the transmission cooler line connection failed, a filing showed.

An investigation may lead to a recall, which would affect an estimated 110,000 vehicles, said the filing dated Aug. 29 on the National Highway Traffic Safety Administration’s Web site.

Nissan owners told the NHTSA that the failures caused a sudden loss of power from the transmission due to the loss of the transmission fluid.

Nissan spokesman Steve Yaeger said that the company was working with the NHTSA to address the agency’s concerns. A repair procedure has been developed for the vehicles that experienced the problem, Yaeger said.

The filing did not say whether there had been any injuries or crashes because of this problem.

NHTSA typically begins a preliminary evaluation when consumer complaints or manufacturer service bulletins suggest there may be a harmful defect. Once that evaluation is complete, the agency either begins an engineering analysis or closes the inquiry. Based on the outcome of the engineering analysis, a vehicle may be recalled or the inquiry may be closed with no further action.