CCR struts. Computer Command Ride. Driver-selectable between touring (soft) and Performance (firmer) handling. Electronic struts that can change damping rates.
When the CCR controller detects a fault in the system, it turns BOTH the touring and performance indicator lights on. These are just to the left of the shifter with the traction/performance shift buttons.
CCR struts are VERY expensive to replace, but it'* no big deal, we just have most people replace with conventional struts. This is a GOOD bargaining point though, if the CCR system has a fault.