Below are the instructions I copied from the manual:
Important: The On-board Handbook must be loaded into the CD/DVD drive Link.
Installing the On-board Handbook
Press the function selector button marked CAR.
Press the control button for Handbook. The source selection will appear on the MMI display.
Turn the rotary pushbutton to CD/DVD and press to confirm.
Turn the rotary pushbutton to Start download and press the rotary pushbutton. The update progress will appear on the MMI display.
To complete the installation, turn the rotary pushbutton to OK and press to confirm.
Starting the On-board Handbook
Press the function selector button marked CAR.
Press the control button for Handbook. The On-board Handbook will automatically load in the language that is set under the option Menu language in the MMI Link.