BMW F07/F10/F11 Headlight Control Module 63117440878

BMW F07, F10, F11 (2010-2017 5-Series and 5-Series Gran Turismo) headlamp control module (OEM 63117440878) placed inside headlamp assembly; controls high/low beams, daytime running lamps, adaptive cornering, and automatic leveling. Installation difficulty: medium; labor about 1.5 hours; requires removing front bumper and headlight assembly. If one headlamp fails, flickers, auto-adjustment fails, or instrument cluster shows “Lighting system fault,” module internal circuitry or relay is damaged and replacement is needed.