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it would be nice if you just replace it and then you have the additional equipment.
In the Volkswagen Group, it was even common for some optional extras to be installed but not activated.
On my Tiguan I activated the cornering light via the software and without any problems.
But seat heating without appropriate seats is bad, the cables will probably even be lying down, so tomgembus could certainly even connect all switches. Only the control unit will be missing and so you can't unlock anything that isn't there.
Greetings Armin
nice.. thanks for the answer Armin767 ..