BMW Repair: bmw 520i 1998, bmw 520i 1998, flat battery


Question
hi few days ago i had a flat battery, so after jamplinking i got it to work and note that there is a sound like a fan working behind the air condition panel after even taking the key out which cause the battery to go flat and when i take the air condition fuse out the sound will disappear,, i have no idea what is going on ,can you help me plz? and also do i need to have a code for my radio or not there is nothing about it in manual thank you ,

Answer
Not sure what the motor is, unless it is the blower motor.  Not sure why it would continue to work when the car is off.

I can answer the code part.  There is usually a separate manual just for the radio in BMW's and it will have the code in it.  If it doesn't you will have to call dealer and they will be able to give it to you once you answer some questions and prove the car is yours.  Hope that helps.  Sorry I couldn't answer the blower problem.