4wd won't disengage
I had a similar problem with my 06 sport. The 4wd light stayed on with 4wd disengaged. Seems I pushed the locking differential button on the dash while cleaning the car and this causes the 4wd light to stay on.
avic-z1
In regard to the Pioneer Navigation system questions..
Many can be answered on the avic411.com site.
Still reading my owners manual..200+ pages..
