Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Headlamp Leveling Control Module (HLCM) -- Discovery Sport/L550 >> Diagnostic Trouble Code Index DTC: Headlamp Leveling Control Module (HLCM) >> Description And Operation >> DTC B1D64-04: Left Headlamp Swivelling Motor - System internal failures >> Possible Causes