My vehicle received an unexpected OTA software update over the night if 12-Feb-2025. That process completely drained and destroyed the 12v battery. This resulted in the software download and installation not completing as intended. Since that time I have related the 12v battery, and the vehicle can drive, but essential all of its electrical components such as HVAC, cameras, and all software controls are non-functional and inaccessible. A service center has been unable to fix the problem and tell me it must be corrected with future OTA updates, but I have no means to identify, let alone contact those responsible for those updates.