Why can't the car play music when connected to AUX?

2 Answers
VonVincent
07/25/25 5:20pm
When a car cannot play music through an AUX connection, it may be due to not using the original data cable, not switching to the correct format, or system errors. Here is some relevant information: AUX: The AUX interface (Auxiliary) refers to an audio input interface that can receive audio signals from electronic audio devices, including MP3 players (typically through a standard headphone jack), allowing the car's sound system to play music from these devices. Car Audio: Car audio (auto-audio) is a sound playback device installed to alleviate the boredom of drivers and passengers during travel. Initially, car AM radios were used, followed by AM/FM radios, cassette players, and later evolved to CD players and digital audio systems compatible with DCC and DAT formats.
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DiAbigail
08/11/25 10:09pm
I've driven all kinds of vehicles and encountered AUX playback issues many times. The core lies in the connection cable and settings. First, check if the cable is damaged or loose—older cables are prone to wear, so try replacing it with a new one, avoiding cheap options. On the audio system side, ensure it's switched to AUX mode by turning the mode knob or pressing the audio source button. On the phone, turn up the volume and disable mute or Bluetooth interference. If it still doesn’t work, the port might be dusty or oxidized—clean it gently with an alcohol swab and blow compressed air to remove debris. Test the device itself by connecting another phone or MP3 player to see if it works. Sometimes, it’s a car system glitch—restart the audio or disconnect the battery for a few minutes to reset. DIY fixes can resolve most issues, but if the port is damaged, visit a repair shop to avoid misdiagnosis and further trouble. Each step saves time and effort.
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