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Old 12-08-2019, 12:28 PM
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10.25 inch Android head unit no sound problem

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.


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.


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!
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Old 12-09-2019, 03:20 PM
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I've tried the DSP license with the IBus app but no luck, I should have known this wouldn't work because I do not have DSP but wanted to try it anyways.

I just found this:


Does any one know where to connect this ''apm wake up signal'' wire?
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Old 12-09-2019, 05:34 PM
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Join Date: Nov 2019
Location: Naaldwijk
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I just fixed this problem with no sound, it's very simple, just connect a switched 12v to the white wire that goes in the amp. It's the bigger plug on the amp (the only plug if you do not have a DSP apm)

Nummer 2 : Remote turn on

Best wire to plice into is a purple with white wire that is in that area.

Im so happy
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