code for radio

[lotta]

I have a '94 540i. I got it about 9 months ago. I left a light on in the car for a couple of days and had to get a jump start to get the car started. Everything worked ok except for the radio/cd player. The display shows "code" and will not work. I looked in my owners manual and it doesn't help. Any ideas on how to fix this? Is there a code that I should enter? Where do I get it? PLEASE HELP!!!

[Antiburn]

You can get it at your dealer. You enter it by hitting the preset radio stations.