Mercury Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question
Ok, do you know if the dealer ran a self diagnostics check on the Nav unit and the results
And if possible, I need the last 8 of the vin number to pull testing for this unit to walk you thru any testing needed.
Ok, there are no self diagnostics that can be done without a scan tool. And I do not have the schematics for it. Besed upon the symptoms, I suspect that the Nav unit itself is defective, but cannot confirm it. I will opt out and see if another expert can help you