Recently my steering wheel controls have been all messed up.  Like if I push the volume down, it goes up.  Or if I push volume up, it changes tracks.  I have never had an issue with this.  This just started last week.  I have tried restarting the NEX a couple times and it is still messed up.  Anyone have this issue?   

I have a newly installed 8200nex as well and the controls are all working OK on my Toyo FJ Cruiser.

Doesn't help I know, but I was worried it might not work as the last radio I had in there was an X940BT from four years back.

Maybe have the installer *assuming it's not you check the cabling, etc.

Anyone else have this issue?  

SDTicker, is it perhaps because you updated the firmware? Perhaps Pioneer updated the keylayout files which means you either have to downgrade firmware, update your idatalink, or change/edit your keylayout file.