Failing navigation unit may display disc error on screen on Nissan Murano

Problem Description and Possible Solution
A navigation unit that is failing can intermittently display a disc error on the screen.
Problem Data
RepairPal Verified
Average mileage: 103,166 (89,000–126,500)
3 model years affected: 2003, 2004, 2006
6 people reported this problem
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Navigation system does not work. It displays disc error on screen. Dealer told me that it would be $250 - $500 to replace.