if your Jeep is like my wife's, it has an RFID tag in the key keeps people from copying it and stealing your ride. it sounds to me like this theft deterrent feature in your Jeep glitched and removing the power for an extended period of time may have allowed the computer to fully reboot and correct the error. if it was me, I'd only use the Jeep for short trips around your home for a week or so and see how it does, if it doesn't come up again, you're probably home free. if it happens again, have it towed to your mechanic to have him check it out. but don't disconnect the battery again as that clears the computer memory and your mechanic cant ID a problem. Good luck!
Have an 06 Laredo, bought it about a month ago, has 45,000 miles.Has been performing flawless until Easter morning, got in vehicle turned key and it acted like the battery was dead. Tried to jump off with our other car would not start, acted the same,would stop cranking and then stop like battery was dead.Put a voltmeter on battery checked 12.29 volts, had my wife try to start it again keeping the voltmeter on battery, dropped to 11.80 volts,battery must be good. Tried starting it again and all the sudden the horn starts blowing,will not stop,disconnected battery cable. Reconnected battery cable, vehicle started right up, ran for about 45 seconds,horn began blowing again and would not stop,disconnected battery cable again.Had places to go so left the battery cable off. When I got home reconnected battery cable,has been fine ever since. I do notice that the air bag light stays on for a while but will eventually go off. Wife is scared to drive Please give your input. Thanks