One problem related to starter has been reported for the 2015 Jeep Patriot. The most recently reported issues are listed below.
Vehicle fails to start multiple times when the battery and starter are in good condition. Common fixes that are recommended are replacing the wcm or the relay box. Sometimes the vehicle will start after multiple times and leaving the key cranked for 20 seconds+, but this isn't always reliable. Brought it into the shop and they couldnt recreate the issue, so it was never resolved for my case.