Haha normski , u should of seen the state of the car when i brought it , it was a mess , previous owner was obviously not much of a pround lexus owner! Ok so here's the situation,
I did as chris suggested and grabbed a cd lens cleaner from a mate of mine , popped it in the cd romran it a couple of times gave the maps cd another good clean popped it back in and my navigation is now WORKING again !!! Am proper chuffed ! A massive thanx to chris for the suggestion , u are a star and thanx to everyone else who's helped me with some great advice , u guys are awesome! ;)