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  #1  
Old 09-06-2014, 09:27 PM
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ECU issues

I bought my 2011 patriot in Nov of last year we'll i just jumped a friend for the first time not realizing that the battery had a cover over it well I thought the ECU was a battery connection so i pulled the little red handle and it killed the jeep. Got it going again but the check engine light is now on I had a coworker of mine scan it for me and it came up with no codes. I don't know much except for the basics (brakes, radiator, etc) so I'm at a loss any help would be greatly appreciated.
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  #2  
Old 09-07-2014, 09:48 AM
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Re: ECU issues

Welcome to the garage.
Not familiar with the Patriot, but i would first try a battery disconnect for some minutes and go from there. If the check engine light is still on after that, then there should be a fault code set. You could try the key dance to check for codes: ignition switch off/run three times and leave in run at the third time. Odometer should show DONE when all ok, or one or more fault code(s).
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Old 03-11-2015, 01:04 AM
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Re: ECU issues

Hi, I hAve a 2010 jeep patriot 4x4 and the ecu light came on....if I drive more then 30 mins and shut it off and wait about 15 mins it won't start..but if I leave the hood open and wait an hour or so. It will. Is this a heat sensor problem..please help if u can
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Old 03-11-2015, 08:02 PM
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Re: ECU issues

Check for a fault code set in the PCM with a scanner. Not sure if the keydance works on the Patriot, because it will show the fault on the odometer: ignition switch off/run three times and leave it in run at the third time. The odometer will show DONE when no faults stored, or a fault(s).
It most probably is the crank or cam sensor causing your problem.
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