WARNING: This page is about a different car, the 2017 Jeep Patriot and 2017 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of CHRYSLER GROUP, LLC
Disconnect the negative battery cable.
Disconnect the electrical connectors from ignition coils.
Courtesy of CHRYSLER GROUP, LLC
Remove the ignition coil mounting bolt.
Courtesy of CHRYSLER GROUP, LLC
Twist the ignition coil then pull straight up.
Courtesy of CHRYSLER GROUP, LLC
Remove the spark plug using a quality socket with a rubber or foam insert.