I also am having the same issue of "No Map Data" after speaking to FCA Canada, my local dealer, and reading online forums, I cannot find a fix that works. My head unit has been replaced, while under warranty already. Same issue appeared after the warranty of 2 years for the replacement head unit. Surprise, Neither Dodge nor the local dealer will take responsibly.
Has anyone actually found a fix for this other than having to spend thousands of dollars for a refurbished head unit? Its a software issue, and Dodge should stand behind its products.
Dodge - please support your customers by issuing a recall for this error.