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Message: <blockquote data-quote="ORVietVet" data-source="post: 26025" data-attributes="member: 9438">The Jeep has a Pentastar engine too. It has the push button start. You did not say whether yours has the start/stop set up or not, so I assume you do not. If you did, they sometimes, like this Cherokee, have a secondary battery under the passenger seat that is a lot like a motorcycle battery.I looked and RA says yours calls for an AGM battery. Her Cherokee called for the AGM battery and the ex did not put one in and with the TIPM system, the AGM is needed, as per Chrysler. Her new battery, by the ex, worked for a short time and then there was problems. When she told me her ex just installed a new battery, I checked the application to make sure it had the right series and then I discovered the application called for an AGM. Then I found out about TIPM problems without AGM batteries. I then installed an AGM battery and she was fine for a while and then her ongoing TIPM problems reared it's ugly head. Recently replaced the start/stop relay, when the vehicle would not crank at all. I also found too much starter draw and recommended a new starter and she did that too. She has been good for a while but a reoccurring problem has been a RED Lightening Bolt flashing on with a backwards paratheses on each side, at the dash. Comes and goes. It is all about the Electronic Throttle Control but diagnostic steps keeps pointing to the intermittent TIPM problem.</blockquote>