Sensor, Intelligent Battery (IBS): Description: Description
WARNING: This page is about a different car, the 2012 Dodge Charger. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of CHRYSLER GROUP, LLC
The Intelligent Battery Sensor (IBS) is mounted directly on the 12 VDC battery's negative post. The battery post clamp nut is a captive nut and the stud will break if the nut is removed.