I have a Jeep Grand Cherokee 3.0L CRD 2005 Auto Quadratec (Mercedes Engine), I just completed replacing the seals and pistons in the rear brake callipers, during the work my battery became flat so when I'd finished the work I gave the battery a charge up, started the engine and drove off to test the brakes! everything was fine But when I tried to go into 4WD lo I got the "service 4WD system" message! I used the 4WD lo gear the day before (just a small 100 yards test going up my track) I wonder if it has something to do with the battery being flat or disconnected ?
Does anyone have any ideas???
I would be grateful for any suggestions.