"The 'M' has a "DIAGNOSTIC MODE" that is not documented.Follow these steps to enter [at your own risk] into the diagnostic mode.
- Start Engine [required if you want to see all available diagnostic options]
- Turn OFF the Audio system
- While pushing the SETTING button, rotate the radio's VOLUME control either clockwise or counter-clockwise 30+ clicks.
- You will then be put into the diagnostic mode.
- Use the BACK button to get to previous screens.
NOTE:
Holding down the SETTING button and rotating the volume knob a 2nd time will put the diagnostic mode into a more "detailed" state offering more options.
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Diagnostic Mode - CELL PHONE VOLUME
One potential use of the diagnostic mode is to improve the sound quality of your cell phone.
- The diagnostic mode has an option "Handsfree Volume Adjustment".
- The default setting for this option is "MED".
- Setting the volume to "HIGH" may improve the sound quality of your bluetooth compatible cell phone.
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Diagnostic Mode - BACKUP CAMERA
The Diagnostic Mode has an option to adjust the BACKUP CAMERA.
- While cruising in your 'M', you can enter the Diagnostic Mode [see above] and go to the "Backup Camera" adjustment screen. When you are in this menu, the Backup Camera turns on.
NOTE: FOr obvious reasons, this is not recommended while driving.
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