Volvo S40 AUD module component protection

[toniz]

Hi guys,

Having a situation here.
Volvo 2006, AUD module blown (amp in boot).
Replaced with second hand unit, but now it plays for 30sec and cuts.
Diagnostic shows AUD not authorized.
Found 24c02 inside, swapped, but still the same.
Anyone has an idea?

Thanks in advance

[M1DJF]

you need to supply more info make and model of the unit

[toniz]

Out of the office alteady, but it is alpine made in china. Can post part numbers tomorow

[adam12112]

Audio network is secured. I do not know details(what you should swap) but maybe serial number is compared. Dealer can disable security and then audio network can accept units from other car or they can configure audio network with used unit.

[toniz]

It is a Volvo AUD.
part no. 3073253
Board made by Alpine.

Any help is greatly appreciated.

Thanks

[bgcomp80]

Go to the dealer and ask them nicely to disable MOST security .