Kia Cadenza no sound from speakers, radio, and GPS with hard start issue on Kia Cadenza

Some Kia Cadenza owners report experiencing issues with no sound coming from the speakers, radio, and GPS after a hard start. This problem may manifest as a complete lack of audio from all sources, including CD players, radio, navigation, satellite radio, and phone calls. Common symptoms include static or silence, which could stem from faulty speaker wiring, blown speakers, or malfunctions within the radio itself. Some owners find that performing a hard reset, either by disconnecting the negative cable or using a reset button, does not always resolve the issue. Additionally, a software update, such as the May '23 update, has been reported to restore functionality for those experiencing radio issues. To troubleshoot, owners are advised to check speaker wiring and connections, verify if any speakers are blown, and consider updating the vehicle's software or consulting a Kia service center for assistance.