2003 audi Bose/Sat nav problems

[adamsaudi]

Hey everyone, i'm Adam and have just bought an 2003 Audi A6 Avant 2.4 petrol CVH and it has the bose Audi,audio and satnav system. i noticed when the weather got above 18 degrees or so the head unit said there was no cd changer and would not play cds,it then sometimes plays when the temp has dropped but its so random and sending me mad!

can anyone help,i've changer the cd changer and that hasn't stopped it.