We are having a bunch of electrical issues with my wife's 2008MDX (no NAV), they all appeared in one day after she came back from a CO state inspection station:
1. Central door locking is not working from neither key fobs nor electric lock buttons on any door. Basically key fobs do not do anything, but the LED come on when I press any of the buttons.
The car can not be locked/unlocked unless I use manual lock switch on each door.
2. Seat/mirrors/steering column positions are all erased from memory and do not get restored by any action (fob or pressing mem1/2 buttons) even after setting new positions.
3. Radio and CD work, but they do not display anything on the radio screen.
However, if I turn on A/C then the radio screen shows all the regular climate control info such as temp/mode etc, so the radio display is not dead.
4. Clock display is blank, I can only see backlighting on it.
The battery is brand new and charged to 100% 12.9V
I found this very informative thread and will try to follow it, I just wish I had manual handy (I know I bought it but can't find it now
. Unfortunately it only partially covers my car's symptoms.