Re: 2007 Self Shifting Into 4WLow & 4WNeutral
It sounds strange for the dealer to mention transmission problems, while its the T-case which is shifting to 4Lo and Neutral.Eventhough the problem could be mechanical inside the T-case, it could also be a problem with the Final Drive Control Module (FDCM). As a test, i would ask the mechanic to disconnect and stow the T-case control motor connector and drive for a while and see if it doesn´t go to 4Lo nor Neutral. You can get a message " service 4 WD", but just ignore it with the t-case control motor disconnected. If it doesn´t go to 4Lo anymore, then most probably the problem is with the FDCM, wiring or the T-case switch.
Ofcourse driving like this is a bit tricky, because suddenly shifting to 4Lo when on speed, will cause a large drag and engine overspeeding.