What are some of the Audi Q7 no sound problem?

From time to time, You may find that Your AudiQ7's head unit will not output sound. There are a number of reasons for this, and they range in severity; to help diagnose, You'll need to know a few things. Is a single speaker affected, or are all speakers affected Is it only on a certain mode (ie, auxiliary, USB, bluetooth, radio) or do You have no sound regardless of Your input If only a single speaker is failing, it's pretty safe to say that the speaker or its wiring has failed. If all speakers fail to output sound regardless of input, then You're likely looking at an issue with the amplifier or the head unit itself. If it's only in a certain mode, You may have issues with the auxiliary port, the antenna, the CD player, or the hardware for whatever mode is affected.