UPDATED March 8 2018: There is an official procedure here http://accessories.volvocars.com/en-us/XC90(16-)/Accessories/Document/VCC-507728/2016
Now my 2016 D5 Momentum has 2 usb ports (both work).
What you need:
-USB hub (31407038)
-plastic panel (31377892)
Then follow this instruction, http://accessories.volvocars.com/en-no/XC90(16-)/InstallationInstruction/Document/VCC-506407-1/2018
Both ports can charge and send data to SENSUS, but no luck with Android Auto!
Now my 2016 D5 Momentum has 2 usb ports (both work).
What you need:
-USB hub (31407038)
-plastic panel (31377892)
Then follow this instruction, http://accessories.volvocars.com/en-no/XC90(16-)/InstallationInstruction/Document/VCC-506407-1/2018
Both ports can charge and send data to SENSUS, but no luck with Android Auto!

