Have Jeep Questions? Ask a Jeep Repair Expert for Answers
Hello and welcome to just answer. There are many control modules/computers in your Patriot. Any one of these modules can stay awake and not power down. Sometimes a module will "wake up" other control modules. That is the cause of the battery drain. The procedure to find out which module it is will be to connect an ammeter in series between the negative battery cable and the negative battery post. Or you can use a 12 volt incandescent test light connected in series. Then you will need to start removing fuses one at a time or start disconnecting the control modules until the ammeter reads below 40 milliamps, or the test light turns off or gets really dim. Is this something you want to do or have a shop or dealer do this?