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.
Fig 1: PIA Bolt, Engine Block Heater Element & PIA Bolt
Courtesy of CHRYSLER GROUP, LLC
Raise and support the vehicle.
Remove the power cord from the block heater (1).
Remove the bolt (2) on the block heater (1). Remove the block heater assembly (1).