WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT OPEN
(R53) DRIVER SEAT BELT TENSIONER LINE 2 CIRCUIT OPEN