Hi i can`t access the Sirius mode although i follow the instructions (from the owner`s manual )to the letter. I got all other modes by pushing the mode button as instructed. iItried a reset and i was able to access the Sirius mode (just this once )but the it would not respond to following instructions, with the tune button. Therefore i am unable to obtain the ESN . Except for this problem this unit works just fine. But i want to access to the Sirius system. Any suggestions ? Jacsim