Tesla Motors Club

Anyone with an aftermarket subwoofer and amp have any issues with their 12v battery? I got a warning message about the 12v battery and that service is required. I took it to the service center and later told me that the battery is not covered under warranty due to the aftermarket subwoofer. They first told me that the battery was being over charged (bullshit meter activated) and then added that the vehicle is detecting excessive energy draw. Excessive energy draw makes sense since an external source is taking away energy but what doesn't make sense is the failure of the 12v battery when the DC to DC converter should be supplying constant power just like an alternator in an ICE car.

Anyways, anyone have an issue with this? Also, don't add any aftermarket anything unless you want your warranty to expire.