Check Control - Big red Triangle with !

[Blue20]

While driving today, The Check Control symbol (big red Triangle with an ! inside) popped up on the instrument display. I went to Vehicle Status and it said all system okay. The ! warning then went away on its own.

I called concierge, but they said they can't see any vehicle warning real time.

Any idea how I may check what happened?

 

[GodFollower]

The dealership will be able to pull up check control history for you on their diagnostic software. As for you finding it yourself, once it is gone there is no way to restore the warning.