I have a 2017 X5. I love the adaptive cruise control. When it is first turned on the display shows 4 bars for the gap distance to any car it detects in front. You can manipulate this from 1 to 4 bars setting the distance between you and the car in front of you. Recently, the gap bars disappear, ACC still works, but I am unable to alter the gap distance. If I turn ACC off for a little bit then the bars usually reappear, but will the again disappear. Anyone else see this and have a resolution?