just bought a well maintained 1984 bmw 325e, on a sweet deal. only problem has been the inability to play radio/stereo because seller did not have code, and after a drained battery incident, never recovered use of radio/stereo himself.
i have pulled the radio, model CM5905, given SN# to BMW dealership who got the code, which i have. the instructions the
dealership gave me (the original manual is missing first two chapters, covering said subject) was to enter code from radio settings (1,2,3,4,5), not on right side of radio where date/time/travel,... settings require a code as well to function.
even after leaving car in ignition switch 2 for and hour (as per BMW), i still get on single 'beep" upon entering code, but
still no function with radio/stereo. any ideas? before i just pull the original radio/stereo and have to buy a new one?