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1. With the iDrive controller, go right, enter, then you can choose a list of contents to display on the right side of the screen. Arrow display is the first thing on the list.
2. It shows when you are approaching an exit ramping and appears on the right side of the screen (instead of Arrow display). The right side display will go back to whatever it was before (i.e. Arrow display) after you've taken the exit ramp.
3-5. I don't really use the traffic feature.
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