Carlos, from your other thread we got confused if you are using aftermarket HU and/or amp.
You described your HU having a CD/DVD behind the screen which X5 never came with.
Are you sure you have the stock sound system?

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4.8is 2004 imola red
4.8is 2005 Black on Black - DINAN/2 sold
4.4 2004 X5
2003 330xi
2008 328xi - sold
4.4 2000 X5 - sold