Why does (Service 4 wheel Drive system) keep coming up on the warning panel and stopping me putting it into 4 wheel drive low?
Here is a paragraph I found on line: You will have to have it checked with a scan tool. ADDITIONAL INFO: This is a known problem with newer model Jeeps. It MIGHT mean this is an issue or it may not. I have had this problem with my 2006 WK (Commander) 5.7L and my 4WD still functioned properly. Unfortunately your only viable option is to take it to a 5 STAR Dealer and have it diagnosed, since this is a specialized system and most independent shops do not have the StarSCAN tool to service it. Chrysler DOES know about this problem and issued a Technical Service Bulletin on the subject.Please keep in mind that while Chrysler DOES know there is a problem, they are not required to fix it at no charge if it is not within a warranty period. This particular problem is NOT a recall.
Here is another solution I found. You may want to try this one first. I got the fix for this problem from another site. The actuator in front diff gets corroded from not being put in 4low enough so it stays stuck in. Also shortly after the N23 recall was done. Take the #25 fuse (e-diff) out in fuse box under the hood closest to the firewall. The "Service 4wheel Drive System" come on the dash steady. Drive around for abit then put fuse back in with engine running. Shut off engine then restart. My problem was fixed and it goes in and out of 4low now.
Search Jeep Grand Cherokee Questions
Jeep Grand Cherokee Experts