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      08-03-2011, 03:15 PM   #1
Second Lieutenant
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Drives: 2011 M3 E93
Join Date: Dec 2010
Location: San Francisco, CA

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Question Electronics to detect M mode enabled/disabled?

How would one go about hooking into the car's electronics to detect when the M button is enabled or disabled?

Basically I want to open my exhaust cutouts whenever M mode is turned on. I have the electronics experience to rig up a microcontroller and relay to trigger the cutouts, but I don't know how to detect when M mode is enabled.

Maybe some signal on the CAN bus? I have no idea.

Avoiding anything warrenty-voiding would be nice.

Appreciate 0
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