20 Most Recent Navman Mio M400 Car GPS Receiver Questions & Answers


Dead battery?, they last about 2-3 years.

Navman Mio M400... | Answered on Sep 13, 2016


after a time without use dechargeable batteries seem not to charge for some reason, apparently this is so on certain rechargeable types more than others.

Check the charger if that is ok replace the batteries...should work ok hopefully

Navman Mio M400... | Answered on Jul 04, 2015


you must go online and update your software for your voice command

Navman Mio M400... | Answered on Feb 09, 2015


You need to go to their website and update the firmware.

Navman Mio M400... | Answered on Aug 28, 2012

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