my son have 2005 volvo xc90 T6
he install aftermarket radio and unplug the battery to installation, after that the car not
have driver power window,sunroof
a/c and the dash have air bag
service when before everything
working fine,have some idea what’s going in on?
I bring two
shop but not have any clue about volvo,please if can help me at
appreciate, thank you

A: Xc90 has fiber optics and once original radio is removed signal is broken and it won’t function as it should, I recommend going back to the factory radio because it is too expensive to having it converted to fit aftermarket radio