2013 LX570 with Mark Levinson and USB to iPhone is not working. Definitely not the phone or cable (tried different ones). It just connects then disconnects for a few seconds and then grays out. Or it will play and then get loud static and stop working. Most likely the USB/Aux module has gone bad? Does anyone have a replacement part No.? Is it the same one on the Landcruiser? Also, any instructions on changing this out? Trying to avoid the dealer.

Thanks