"Check Control Message ""Adaptive Headlights Failed"". The Check Control message ""Adaptive Headlights Failed"" is displayed in the Central Information Display (CID). All headlights are functioning properly. One or more of the following fault codes are stored in the FEM (Front Electronic Module): * 0x8041BA - Adaptive headlight (AHL): system defective * 0x8041F8 - Right headlight driver module (HDM): AHL error * 0x8041FB - Left headlight driver module (HDM): AHL error CAUSE Software error in the (HDM) Headlight Driver Module"