Mercedes-Benz CL-Class 2013 Owners Manual - Manual (Page 179)

prompting you to insert the second DVD.
Follow the instructions on the display.
X
To allow the installation to run to the
end without canceling: take no further
action.
When the installation process is
successfully completed, you will see a
message to this effect.
X To confirm the message: press W.
COMAND ejects the DVD.
X Take the DVD out of the slot.
The installation is complete.
When the installation process is not
successfully completed, you will see a
message to this effect.
X To confirm the message: press W.
COMAND ejects the DVD.
X Take the DVD out of the slot.
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COMAND
Z