Ongoing issue with the information monitor freezing, particular to the navigation function. Shuts down and attempts to reboot repeatedly. Mb attempted a fix re software, however, issue continues. Shutting off the engine, leaving parked for an hour or two does not correct the system. May occur shortly after backing out of the garage or shortly after beginning to drive. Overnight parking seems to correct the immediate issue. During this time, only other function that operates is the radio; cannot use voice commands, telephone bluetooth, etc. Have alerted mb dealer in san antonio with copy to mb usa, however, no responses. Google search has indicated various models may have experienced similar issues over several years, however, no indications of corrective action. Prudent to also carry a gps alternative such as a map, garmin or other brand in the event of failure while on a trip. This occurred in late November 2019 and again January 2020.

- San Antonio, TX, USA