Need help with a few questions

Airwalk

I just got my Nismo this past saturday and it's awesome. I noticed that when I was accelerating hard with some slippage the VDC light would blink, like it should. So I wanted to do a run with it off so I pushed the VDC button on the left of the wheel and i did'nt see or hear any confirmation that the VDC was off. I held it down for 10 seconds, 5, 3 all kinds of combinations and it stayed on. Has anyone else ran into this problem, and if so what did you do to fix or is this where I put it in the shop. Second if you look at the pic with the steering wheel you'll notice that i have bluetooth controls on the wheel but I have no ideal how to link it to my system because it's not the Bose unit?!? I have a owners manual coming in the mail so i'm flying blind. Lastly does the rear defroster work slow because I watched it this morn and it seemed like it took about twenty minutes to see some melting on the back windows and the side rearviews. Any help will be appreciated and thans to all who respond in advance, here's some pics of my baby!

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