Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: BLINDSPOT Monitoring Control Module - Left/Right (BMCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: BLINDSPOT Monitoring Control Module - Left / Right (BMCM) >> Description And Operation >> DTC B12DA-01: Blind Spot Warning Indicator - General electrical failure >> Possible Causes