rear seat headphone controls will not work on 2008 Volvo XC90

the controllers on the post that lets rear seat passagers change stations or control the cd will not work

Asked by for the 2008 Volvo XC90
You'll need to have a Volvo repair shop look at this, assuming you have all the setting adjusted correctly. I would double check with the owners manual just to be sure, here is one online for free: