Genuine sealed original Mercedes Test disk for COMAND 2.0 and COMAND 2.5 made by Bosch.

Bosch test CD to fully test the Navigation processor in COMAND 2.0 and COMAND 2.5. (CD based COMAND)CD is inserted in the CD drive after holding down a certain key sequence. Update takes about 40 mins,

Mercedes dealers will not supply these to end users.

NOT suitable for Japanese or North America COMAND 2.0 / COMAND 2.5 systems.