I have the stock OEM nav in my 08' MR. Sometimes when I hit the + volume on the steering wheel it lowers the volume, and sometimes when I hit the - volume or song change it goes to handsfree phone mode

it works MOST of the time, but sometimes like glitches out. Is this like a common thing and do I need to update some kinda software or something?

 

It seems to be a common issue. I have the same issue with my 2010 MR. Navi was also replaced and didn't fix the issue although not as often now.

 

Wow, never heard of that. Gotta love Mitsubishi electronics!

 

Can't comment on the X because I don't have that option. But my 04 325ci (previous car) use to do the same every so often. My sister's 05 endeavor also. I think its just a glitch.