Recently got an '07 MDX tech pkg and d HandsFree link won't work even after following all instructions in the owner's manual. No beep or response of any kind is heard after pressing & releasing d talk button on the steering wheel. Secondly,d Nav sys won't come on & keeps saying"DVD Disc reading error Contact your dealer."Finally all the gauges I.e Temp gauge,Tacho-,Speedometer & fuel gauge aint working.All the fuses & connections appear to be good. Please Can I be guided on how to overcome these issues.Thanks