I thought I had this figured out by reading all of the various sources of info. on this site and others, but I still have some questions about which CD changers are compatible with my vehicle. Hopefullt someone out there can point me in the right direction...
I have a 1992 525it that is prewired for a CD changer.
My radio will display BMW and PIONEER when the prog and (-) buttons are pressed together. Various snippets are included below, which I got from various sources. (Thanks to all for the previous info., I did not keep track of who supplied waht info..)
I gather that the following is true -
I can use the dealer supplied Pioneer ($350 + $40 brackets) or Alpine ($399 + $40 bracket) CD changers as a direct plug in to the 14 PIN Din plug already in the side cargo bolster.
I can use an aftermarket Pioneer CDX-M30 ($279) with a BMW/PIO adapter cable($55). (adapts 14 pin round DIN to the 6 x 7 square plug on the back of the CDX-M30) ONLY if my radio displays the good codes below-
"GOOD" "BAD" "MAYBE"
BMWPIO PIONEER4 PIONEER
PIO2 Alpine 5
-Thanks for any help
if your wondering if it fits your 89 to 94 bmw radio hold down the negative mode
button and the program button at the same time and if it reads bmwpio, pio2,pio3, alpine2 or alpine 3 it will work.
If you have a mode button in the lower right
corner of the radio face, it will work. If you don't, you will need to press the PROG or MODE and (-) buttons to display the radio type, it should read PIO, or
ALP, or something similar.
Radio Model year/application changer adapter
- ------------ ---------------- --------------- ----------
KE91zbm (Pioneer 91-94 All CDX-M30 AAMP BMWPIO
PIO, PIO2,*not PIONEER4*)
Contact Pacific BMW glendale CA they have the best prices for mailorder. Push mode and function at same time to see if its a "PIO" or "ALP" display in screen
Many 1991-95 BMW factory radios are compatible with the Pioneer CDX-M30 6-disc changer. Here is the test that BMW owners should conduct to determine
if their factory stereo will work with the Pioneer changer. Press the program (PROG) and minus (-) buttons simultaneously, with the stereo on. If ALPINE,
ALPINE 2, PIO, or PIO2 shows on the display, the radio is compatible with the CDX-M30. The #541BMWPiO1 adapter is needed to connect the changer to
the factory stereo. However, if ALPINE 5, P102, or PIOFOUR shows on the display, the radio is not compatible with an aftermarket CD changer.
The stereo is either made by Pioneer or Alpine. Push the mode button and the prog button at the same time, and either ALP or PIO will display. The car is
prewired, so just plug and play. You can go to your local retailers after you know who makes it and look at their selection.If you want the BMW name on the slide
plate Pacific BMW in Glendale CA has the cheapest prices via mail order. I purchased there after checking prices everywhere.
1991- Early 1994 BMW vehicles which have CD Changer Controller radios and are fitted with a 14-Pin data cable which is
terminated in the trunk are compatible with the Pioneer CDXM30 after market CD Changer when installed in conjunction with PIE
Part # BMW-PIO/M CD Changer Interface Convertor. One end of the BMW-PIO/M adaptor plugs into the 14-Pin OEM CD data
cable and the other end plugs into the Pioneer Changer's 2(sic) 6X7 chassis plug. Use of the changer's after market data cable is not
necessary and is superfluous.
OK I just got off the phone with BMW and we have to determine which head unit you currently have.
To do this you need have the radio on and press the "program" & "-" buttons at the same time. The display should read one of the following "ALP" (for Alpine) or
PIO (for Pioneer) If it reads "ALP" then this cd changer will work in your car.