smalharbi

i have an IS300 2007 model it looks the same as IS250 but the engine is stronger so basically its between the 250 and 350 the problem that i have is the navigation sometime says unable to read data. check if map DVD is correct. after that i got another screen after it works it just stopped working and says unable to read DVD correctly Check if the DVD is damaged or dirty. can anyone tell me how to fix this problem and how can i change the DVD where to put it thanks a lot