GPS system does not know where it is. The unit appears to be Mercedes OEM equipment, matching the appearance of the units I find in advertising photos and on Amazon. There was no navigation CD with the car when I bought it in Apr 2016. I got what claims to be a 2006 Mercedes navigation CD through the internet. It worked until Jan 2017, first insisting that the car is parked in the middle of Lake Michigan while I live near Minneapolis, MN, and showing a correct instruction from there to my destinations in Minnesota and the Dakotas. Now I only get a white screen.

The factory service manual tells me that I need to insert the navigation CD into a unit in the trunk on a sedan, but says nothing about wagons, removing the CD or leaving it in for operation. The manual has great detail about operating the system from the driver's seat, but nothing further about the hardware. I don't find a CD reader hidden in the rear of my wagon. Since my car has a 6 disk CD changer in the dash, and a one disk CD player slot on the entertainment unit I have been inserting the navigation CD into the single slot.

Am I using the correct CD player slot to load the navigation disk? Do the CD's expire? Must the CD be in the unit drive to work, or does the unit download the data to memory allowing the CD to be removed? How do I reset the audio/navigation system to clear bad settings or data? Am I on the right track, or is it just broke?

JFS

Comments

Profile picture for user MBFanatic
You insert the navigation disk in the single slot in the HU. Just like you are. The CD changer is just for CDs. If the unit was working fine but now it is no longer working my guess would be that one or more of the GPS receving antenas are not working. Have you had any work done to the car or any major accident?
Profile picture for user attorneyjfs

Thank you for responding.

Yes, work has been done on alignment, drive-train and new tires. Nothing under the dash. No accidents.

How do I go about testing the antenna?

Profile picture for user MBFanatic
GPS antennas are usually by the bumpers. I would go to the dealership and get a layout of the GPS antennas for your car. Then check any that you think may have been affected by the work done.

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