Does it go to sleep? Mine does not. I can finally stop driving it as a daily driver and address the issue. The GMIII is going out for repairs. List of items that don't work: overhead lights, rear doors don't lock/unlock, hatch won't open, gate won't open, and now, the P light does not come on (but it's awake according to my Foxwell).

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'06 X5 3.0i - bought @143,123 miles (12/26/20)