I used to get the reboot/battery icon quite a bit when I first installed my empeg. It happened randomly, and there was no specific thing I could do to reproduce it. I decide that the car's stock wiring just wasn't up to the task (after some advice from some helpful people here on the bbs), and wired the empeg's constant straight to the battery. I used 12AWG and put an automotive in line fuse holder close to the battery end. I Haven't had a problem since.

If your trouble were due to some electrical problem in your Jeep, then I would expect other things to start behaving oddly, as well. But if everything else is fine, then you can either try to track down the problem, or just bypass it and choose not to care.