How to read rns 510 code?

[pluto2013]

I have the polo here.
Radio is working but need to replace something on the car and Battery needs to go out.

How can i read the radio code of the rns510 with radio inside car working

[Raimax]

I have the polo here.
Radio is working but need to replace something on the car and Battery needs to go out.

How can i read the radio code of the rns510 with radio inside car working


You do not need a code in your car. Code does not require