Hello & Welcome,
Sorry I didn't see your question earlier.
The "No Detailed Maps Found That Support Routing" message may appear on your device for the following reasons:
To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.
Enabling maps on the GPS device:
Retrieving your unlock codes:
Creating an unlock code file for PC:
Creating an unlock code file for Mac:
*nuvi x70 owners with transatlantic mapping will need to follow the Creating an unlock code file instructions above for their U.S. mapping and then create another unlock file for their European maps:
If you continue to receive the "No Detailed Maps Found That Support Routing" message after completing these steps please contact Garmin Support.
Please let me know what you find or if you have more questions.
Take Care, Greg A.
Did you "Tap" the screen multiple times (vs. press & hold) to see if the message would go away?
Do you have the USB cable for connecting with your computer?