10.25 inch Android head unit no sound problem

[SpookX5]

Hi all,

I installed a Chinese 10.25 inch Android 4GB 64GB headunit in my 2000 E53 X5 this weekend:
The fit is OK and everything works except two things: No sound at all, it will not find any radio stations.

I searched around but could not find much on how to fix this.

https://www.aliexpress.com/item/3300...2a474c4dn6ZbZU


My X has a non DSP amp, it was running the 7'' navigation screen with 6CD changer which was probably installed after it left the factory as the screen was not bolted down at all. I have removed the CD changer and Navigation DVD unit in the back. Everything worked like it should.


Untill now I tried the following things to try and get sound out of it:
Unplugged steering wheel interface and plug it back in, no result
Checked if fibre cable has a good connection, all good
Checked all plugs in the back and made sure they are good, all good

They I checked the listing and found this:


It seems like my car is missing one pin:





Could this be my problem? What does it connect to?

Sometimes I hear two quick beeps coming from the speakers but no warning on the dash, could this be a low voltage warning or something else? Any other chimes seem to have disappeared.

I have bought the Resler interface with OBC license and it works great, I just bought the DSP license too but will have to wait for them to activate it. Maybe this will cure my no sound issue.

NON DSP Amp


Fibre cables, one is left disconnected because I removed the CD Changer


Picture of the head unit, looks very good


Any input will be appreciated!