(Reuters) -Stellantis ( STLA ) is recalling 332,000 Alfa Romeo, Jeep, and Fiat vehicles in the United States over a concern with faulty seat belt sensors, the U.S. National Highway Traffic Safety Administration said on Wednesday.

"A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying as intended," the U.S. auto safety regulator said.

Buckle sensors are used to detect if the seatbelt is properly engaged.

Dealers will repair the connection for free, according to the NHTSA.

The recall includes certain 2017-2024 Alfa Romeo Giulia, and 2018-2025 Alfa Romeo Stelvio, along with 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E models.

Stellantis ( STLA ), formed by the merger of Fiat Chrysler and PSA Group, is one of the world's largest automakers.