I have a Kia 2025 Prestige PHEV and am puzzled by an icon on the dash which I can't identify in either manual. This is a silhouette of the car for the low tire pressure. But instead of tires with pressures there are changing bars of purple. I cannot understand this icon or why the bars change and wonder if any other owner can explain it and what it does. It is in a prominent position over the four settings for drive modes, so I assume it must be important. Many thanks.