Detroit — Mazda Motor Corp. said Tuesday it will recall nearly 100,000 Mazda6 midsize cars because the tire pressure monitoring system may be faulty.

The Japanese automaker said the recall of the 2014-15 Mazda6 built from October 2012 to October 2014 is because if the pressure on four of the tires on a recalled vehicle gradually drop at the same time, the tire pressure monitoring system may not warn the driver of the drop in pressure. The system is required under U.S. law. Vehicles without a working monitoring system could be at risk of sudden tire failure, which could lead to a crash.

The system requires that the tire pressure monitoring system must illuminate a low tire pressure warning telltale within 20 minutes after the pressure in one or more of the vehicle's tires, up to a total of four tires, is equal to or less than either the pressure 25 percent below the vehicle manufacturer's recommended cold inflation pressure.

Mazda was notified by the National Highway Traffic Safety Administration in September of the possible problem. Mazda told NHTSA it would recall the vehicles on Oct. 17; but the safety agency didn’t post the recall publicly until Tuesday — more than a month later.

Dealers will reprogram the software of the system.

The automaker reported no injuries or crashes have resulted from the issue.

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