DETROIT — Last year, 53 million vehicles, car seats, tires and equipment were recalled, according to the National Highway Traffic Safety Administration.

But a portion of those defects, and those reported this year and earlier, likely won’t get fixed. That means vehicles with potentially dangerous problems might remain on the roads, putting lives in danger. A 2017 Detroit Free Press story put the number of unrepaired vehicles under recall at 30%.

NHTSA, however, is launching a tool, a smartphone app, that could put a dent in the number of unrepaired vehicles and make it easier to find out whether there’s a recall on your car and what to do about it. Once you download the SaferCar app and enter your vehicle identification number, or VIN, or information about equipment or car seats, you can get notifications, the agency said in a news release. The app was available Thursday morning