Download Received a automobile in your store as a result of the wi-fi headphones donâ€™t work with the RES, although they work just tremendous with the AM/FM radio, XM radio, or the in-dash disc changer? The digital audio lead, the digital audio sublead, or both may very well be the culprit. The audio for the wireless headphones is supplied by these results in the rear controller and screen, which contains infrared sensors that transmit the digital audio sign to the headphones. If both the lead or the sublead isnâ€™t securely plugged in at every end, or the lead or the sublead itself is unhealthy, you can wind up with this problem. To verify for and fix this drawback, hereâ€™s what you have to do: 1. Check with pages 23-112 and 23-113 of the â€™07-08 MDX S/M, and enter the self-diagnostic function. (On-line, enter keyword HEADPHONES and choose Wireless headphones don’t work . . . from the list.) 2. From the Analysis Menu on the overhead screen, select 1. CONNECT. Verify the DIGITAL OUT status. â€¢ Should you see NG in a crimson box, go to step 3.