JUST BOUGHT 2000 MONTERO SPORT MY STERO SAYS OFF SO I PUT THE IGNITION IN ACC. &LEFT IT ON FOR 45 MINUTES SO I COULD PUNCH IN CODE NUMBER THAT I FOUND IN OWNERS MANUEL & IT CAME UP ERROR1 IS THERE A WAY TO OVERIDE THIS PROBLEM IT ALSO SAYS IN MANUEL IF YOU PRESS ON ,THE CODE SHOULD COME UP ON DISPLAY THAT DIDNT WORK EITHER PLEASE HELP