Hi, I am new to the forum and recently purchased an 06 E350, however it did not have the Navigation Unit in the trunk, which I now want. Does anyone have this unit for sale? I already have the head unit/climate control in the dash, but when I press Navigation it says unavailable.

I am new to the Mercedes world but am pretty sure I need this unit in order to use the Navigation system (that was how my older TL's navigation system worked).

Thanks in advance!