Hello,

Few weeks ago the display stopped working, after few days everything worked as before. After that every odd day it the display worked again.. last week it stopped working. I tried to restart it, but it didn't help.

I attached two photos. Do you know where's the problem?

 

Hi.
As you may be aware the mmi, phone, radio, amp, CD player and control panel are all linked in the MOST ring (fibre optic ring). When one if these units fails, it pulls the whole fibre optic loop down and causes faults like you are experiencing.
You need to have the fault memories scanned and if possible a "loop break diagnosis" test via a tester, to confirm a faulty unit.

 

First thing I would check would be the bluetooth module under the carpet on the drivers side. That was what caused mine to go out. You can check the fiber ring without a tester. This is what i did. I unplugged each device one at a time inserted the key and the light would flash for a few seconds. Dont look into it just hold your hand under it. If it doesnt flash go the the component before it and check there.

 

I don't have bluetooth module. Btw I forgot to mention a cleaner company cleaned the carpet in the car. Is the water cause problems like this?

Where is that ring?