Re: Service 4WD System error
The first time this happened to me years ago, the Jeep dealer replaced the final drive control module itself. The issue was resolved and was back when the Jeep was under extended warranty. A few years later there was a recall for a final drive control module reprogramming. Dealer reprogrammed it and i started to get the service 4wd system message off and on a few months later. Just the other day i took the Jeep in for another recall to re-reprogram the final drive control module and get the ignition switch replaced and i have not had the service 4wd system error message since the latest reprogram. Hope this helps.
Mike, 29, have a 2006 Dark Khaki WK Limited 4.7L