2006 Jeep Grand Cherokee Q&A
2006 Jeep Grand Cherokee Question: 4WD SERVICE LIGHT
A fault has been detected by the computer that monitors the 4WD system, and your looking at normally 1 hour of diagnosis time to figure out what is wrong. When the diagnosis is completed, only then can an estimate for the repair be given. - Bret Bodas
Software updates are available to address erroneous illumination of the "Service 4WD System" warning light and other issues (e.g. shifting, performance).
where is the 4wd switch and how do you service or disconnect
my service 4wd system light is on and i'm worried that its something serious