How to use OEM Microphone for Apple CarPlay/Android Auto?
For now, our BMW Android screen support to use OEM microphone for CarPlay/Android Auto, this will enhance the sound quality of phone calls. Compare to use Android screen 's built-in MIC, or aftermarket external MIC, the original car Microphone with much better sound quality. But, there are two questions:
1) How to use it? Below is the wire-diagram and setup.
Step 1: Please select the "external microphone"and factory microphone option in the settings (factory password : 070305).
Step 2: Please remove the protective hose from the MIC IN connector on the ISO harness and connect it to the MIC IN on the USB harness.
2) Does all models support this new function? NO.
(1) The model with 8.8 inch screen, it NOT support OEM MIC.
B503K For BMW 1/2/3/4 Series(2018) EVO
B202K For BMW 2 Series F22/F45 MPV(2013-2016)NBT
B502K For BMW 2 Series F45 MPV(2018)EVO
B233K For BMW 3 Series (2009-2012)CIC, For BMW5 Series (2009-2010)CIC
B210K For BMW 5 Series E60 E90(2005-2010)CCC
B207K For BMW 7 Series E65/E66 (2005-2009)
B253K For BMW X3/X4 F25/26(2011-2012) CIC
B223 For BMW X3/X4 F25/26(2013-2017)NBT
(2) Special models as below, NOT support OEM MIC.
B283DK For BMW X3 E83 (2004-2010) (with original screen) (10.25'')
B283DK-2 For BMW Z4 E85/E86 (with OEM screen) (10.25'')
B224K For BMW Z4 E89(2009-2018) CIC (10.25'')