Grandland X Audio System Failure

That sounds frustrating. I had a similar problem with my old Renault Megane, although not exactly the same. My whole system worked, but sometimes some speakers were silent. Have you checked the fuses? Could be a simple fix.

Thanks, I did check the fuses, and they seem fine. Anything else the Renault Megane issue might suggest?

Well, it turned out to be a defective bass speaker. It created a short circuit and shut down the whole audio system to avoid major problems. I'd suggest taking it to a good workshop with diagnostic tools. They'll pinpoint it quickly.

Appreciate the advice! Took it to a local garage, and they confirmed it. The bass speaker was indeed the problem. Cost me 280€, but at least I have my music back. Thanks again!