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Seeking help with wonky electrical issues - 997.2 Coupe

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I recently acquired a 997.2 Coupe 6-spd (2009) and it has two weird electrical-related issues that I'd love to get some color on:

1. The prior owner replaced the stock steering wheel with the Porsche Alcantara sport steering wheel, but the horn no longer works when the center is pressed. Is there any way I can diagnose the issue with a Foxwell OBD-2 scanner or a PIWIS laptop (someone in my local Porsche club has one)? I was told it just needed to be "coded" but I don't know the procedure. It could be a relay/clockspring issue, though I'm not sure.


2. The side mirror controls are completely inverted (turning the knob to the left controls the right mirror and vice versa and moving up pushes the mirrors down, left goes right, etc). Is this an easy fix?


Thanks in advance!


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1 hour ago, Maxfield said:

Thanks for the insight! My friend with a PIWIS couldn't find the horn/wheel part in the system. Do you know the coding procedure by any chance?


Working from memory here as it has been a while, but it should be under "coding adaptations" and then under "steering col switch" where you change the value to "installed".  Loren might want to jump in here, but certain car configurations like yours also require replacing the actual steering control module as well, which also must then be coded to the car....................

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