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Are you saying the car sees the bike carrier as an obstacle and generates warning sounds? If that’s the case, you can disable Park Assist chimes or use Trailer Mode (but that has other implications). If not that, what’s the problem?
Your best option is to disable Park Assist chimes using Controls > Safety > Park Assist Chimes. I’m not sure how the car would “recognize” a bike carrier. Maybe the problem will go away when Tesla eventually disables the ultrasonic sensors in your car. You could also try a different bike carrier that sits higher and doesn’t block the sensors.