A fault has been detected by the 4WD ECU and you need to diagnose the problem to find the cause. It could be anything from a leaking vacuum hose to the control unit and cost varies.
Whether it is going to cause more problems or not depends on the cause. It could result in the 4WD not working.
Is the central differential light blinking as well?
Friday, December 17th, 2010 AT 11:09 PM