I bought a second hand 2010 GLK and would like to know what kind of Navigation/iPod/BlueTooth system that it was installed with. According to the previous owner, his vehicle did have those options and MB dealership installed for $3k(?). See pics attached.

a) What kind of system is this?

b) Will the Navigation CD update work on this? (My navigation has been stuck on "initializing" for the longest time

c) How do you "reboot" this system. All of a sudden, volume from iPod is not working (moved iPod to a different car and works). For the life of me, I can find a disconnect port or on/off button.