Why is there a buzzing current sound when playing music on the car navigation system?
3 Answers
Introduction to the causes of buzzing current sound when playing music on the car navigation system: Generally, the issue arises due to poor grounding of the navigation system, which introduces external interference into the navigation circuit. If the noise originates from the wiring connections, it is necessary to enhance the shielding of the audio lines, including replacing the speaker wires. Additionally, the routing of the wires should avoid interference sources; otherwise, noticeable current noise may persist. It is recommended to visit a 4S shop for professional repair. Methods for maintaining the car navigation system: 1. Follow the correct shutdown sequence after use: first close the page, then turn off the device, and finally unplug the power. 2. Charging time: For the first three uses after purchase, it is best to charge the navigation device for at least 10 hours to maximize the battery's storage capacity. 3. Start the car before plugging in the cigarette lighter power: After navigation, unplug the cigarette lighter and reconnect it only after the next engine start. This helps protect the machine's battery and extend its lifespan. 4. Avoid contact with sharp objects on the navigation screen: Also, prevent strong impacts. Be cautious when placing items near the device.
I've also experienced that annoying buzzing sound when playing music through the navigation system in my car, which sounds like electrical interference. There are generally several reasons for this. The most common is electrical interference - for example, the ignition system can generate interference waves that affect the navigation circuit, especially in older car models or vehicles with aftermarket installations. Another possibility is poor connections, where the wiring between the navigation system and audio system becomes loose or oxidized, or if the connectors get dirty. It could also be due to device incompatibility - if the navigation system is of poor quality or incompatible with the speakers, unstable current during playback can cause noise. From my personal experience dealing with this several times, the solutions are: first check all connectors are securely plugged in, then try using high-quality audio cables (sometimes just changing the cable solves the problem), and if that doesn't work, have an auto repair shop test the circuits to prevent long-term damage to the equipment.
I often tinker with my car and add accessories, so I've seen plenty of cases where the navigation or music playback produces strange noises. Most of the time, it's a wiring issue—like poor contact in the Bluetooth module or USB port causing a buzzing sound. Another common culprit is poor grounding, where an unstable chassis ground wire causes stray current and produces noise. Modified cars are especially prone to this, such as when a subwoofer isn’t installed properly, leading to current feedback affecting the navigation. My advice: first, unplug and reconnect all connections. If the noise persists, check the grounding wire—usually attached to the negative terminal of the battery—and tighten the connection. Also, try turning off non-essential electrical devices like fans or heaters to see if the interference stops. Address it early—don’t wait until the audio system fails to regret it.
