Home › Land Rover › 2014 › LR4 Base, AWD › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Multi-Function Display (MFD) -- LR4/L319 › Diagnostic Trouble Code Index DTC: Multi-Function Display (MFD) › Description And Operation › DTC B10BD-13: Multifunctional Switch - Circuit open › Possible Causes