Coding will be stored in your HU / sat nav.
Never heard of this before.
I do not think its to do with the ipod retrofit kit / module.
Possibly, they don't know the coding or your car has odd HU.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play
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