Mcgoo

Hi all after fixing the Mmi I was in the boot and I noticed there was no subwoofer and can’t see wiring for it either does anyone know if a 2013 sline plus should have 1 or not I have a setting on the Mmi for adjustment of it but nothing in the rear and if it is supposed to have 1 can anyone point me in the right direction for locating where the wire is supposed to run in the harness thanks

Thanks I watched this video before but it just threw me because I still have radio functionality and buttons still light up also but I’m still going to strip it out and check

Hi I’m a new to me owner of a 2013 q7 purchased today at a discounted rate as it has a few problems to sort but 1 of the main problems is the Mmi screen is just black not switching on at all still got radio working and buttons on centre console work so don’t think it could be water damage tried forced reset but still won’t come on has anyone had similar problem if so could you please point me in the right direction