Our 2011 Greyhawk has the same issues and more. After 1 1/2 years had the M 1 replaced with the M4. First trip with it last week. My first impression was good-at least the GPS booted properly. But enroute to Pigeon Forge from Dayton, every time the brakes were applied, the rear camera would come on, VERY loud before reverting back to GPS. That worked a few times, then pulling into a rest stop, the rear camera came on, went out, but the right camera would not come on with the blinker. Had to reset the box which meant starting over from scratch. Other things, using the touch screen would, at times, cause the seat belt warning on the instrument cluster to light/chime briefly and also disconnect the cruise. Right now with the coach parked, the camera volume is stuck on!!
MYBroken Jeep, what kind of Pioneer unit did you get? Is it completely compatible with the wiring?