Audi A7 Audio System Goes Dead, Complete Sound Loss

Having dealt with a similar audio connectivity issue on my 2013 Audi A6, I understand the frustration of radio silence in your vehicle. Based on some experience with car audio systems, I can share what worked in my case. After troubleshooting basic checks like fuses and head unit resets, I took it to a workshop where they diagnosed a defective bass speaker that was causing the entire sound system to shut down. The repair involved replacing the faulty speaker component, which resolved the sound distortion and restored full audio functionality. The total repair cost was 280 Euro. Before suggesting specific solutions for your A7, it would help to know: Have you noticed any crackling sounds before the audio stopped completely? Does the system show Bluetooth connectivity despite no sound output? Are there any error messages on the MMI display? Have you recently had any electrical work done on the car? Car speakers can fail for various reasons, and Audi models from this generation sometimes share similar audio system architectures. The symptoms you describe match my experience, but proper diagnosis is essential for an accurate fix.

Latest service was at 174000 KM, just 3 months ago. Checked both suggestions: The fuses are all intact and a system reset did not help. Yesterday at startup there was a slight crackling from the car speakers before complete silence. No error messages showing up on the MMI display, and yes, the Bluetooth still connects normally despite no sound. The volume control slider moves but nothing happens. Perhaps relevant: The auxiliary input stopped working about a week before the complete audio failure. No electrical work has been done recently. What was the diagnostic fee at your workshop? And did they have to remove interior panels to access the speakers?

Thanks for those details, they actually match my experience quite closely. The crackling sound followed by complete silence from the car speakers is exactly what happened in my case, and the auxiliary input failing first was also an early warning sign I noticed. The diagnostic fee at the workshop was 95 Euro, which they later included in the total repair cost. They did need to remove some interior panels to access the sound system components, mainly around the rear deck where the subwoofer is located. The labor added about 2 hours to the job. The fact that your USB audio and auxiliary input failed before the complete shutdown strongly suggests a similar issue to what I experienced, likely a failing amplifier or main speaker causing a system-wide protection shutdown. The volume control responding without producing sound is another typical symptom of this. For your A7, the repair process should be nearly identical to my A6 since they share the same audio system architecture. The total repair time was about 4 hours, including diagnostics and testing. If you decide to get it repaired, I would recommend having them check the amplifier connections while they are accessing the system, preventive maintenance here can avoid future issues. A full system diagnostic would give you the exact cause, but based on these matching symptoms, you are likely looking at a similar repair cost range of 250-300 Euro.

Given the detailed information, especially about the diagnostic fee and repair process, this is very helpful. The crackling sound I heard matches exactly what you experienced, so I am more confident now about what to expect. I will schedule a workshop visit this week. The 95 Euro diagnostic fee seems reasonable, and knowing they might need around 4 hours for the full repair helps me plan accordingly. The total estimated cost of 250-300 Euro is within what I expected after the sound distortion started. One last question before I book the appointment: did your Bluetooth sound quality return to normal immediately after the repair, or did the system need time to recalibrate? Just want to know what to expect once it is fixed.