Hi there, I am Michelle, and i am a licensed electronics professional, i see you are asking about Toyota Hilux Navigator, i think i can help you. I have an overall 9 years of experience in this area and have helped hundreds of customers in fixing there problems.
is the disk scratch less.
did you try any other disk?
is it not reading any other disk like an audio disk
click on the blue link
please ignore last two lines posted its posted accidently