A glitch with the occupant classification system on certain Range Rovers has prompted Land Rover and the National Highway Traffic Safety Administration to issue a recall for 61,793 vehicles.

The apparent problem is that the OCS may not be able to distinguish between a small adult and a child sitting in the front passenger seat, and could turn off the airbag when it should be on.

The issue affects the 2013-15 Range Rover (specifically those manufactured between Aug. 23, 2012, and Feb. 5, 2015) and 2014-15 Range Rover Sport (built from June 16, 2013, to Feb. 5, 2015). To fix the issue, dealers will have to simply update the OCS software.

In a separate campaign, Land Rover is also calling in a 2015 Range Rover Sport and a 2015 LR4. That's right, just one of each, both equipped with the 3.0-liter supercharged V6 whose connecting rod bolts may have been improperly torqued. In those two cases, the entire engine is being replaced.