S430 access authorization
 

Hi All,
I have S430 2002 and recently I can't unlock the car. If I use the mechanical key to oppen the door then the key cann't be rotated
from position 0 to position 1,2 and start. I believe it is a access authorization problem. No one of my remote key works.
Battery is OK. If I press any of the remote key buttons I can hear some noise comming out from instrumentation module.
I have used the star system to diagnose the EIS module. If some one has a star diagnostic knowledge I can provide all the data.
There is no fault codes or events stored. Is there any other module that contribute to access authorization (not drive authorization) exept EIS? Thank you.