I recently have had to replace the battery in our 535i and am in need of the radio code. Only problem is the radio was swapped out with a used unit by the previous owner and thus we have no code number. How can one obtain or decifer this code number?
Is there any way to program the radio so we could use the original factory code?
My guess is that the codes are hard coded to prevent theft and reprogramming.
Any info or help is greatly appreciated.