Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index: Touchscreen DTC: Touch Screen (TS) -- LR4/L319 >> Diagnostic Trouble Code Index: Touchscreen DTC: Touch Screen (TS) >> Description And Operation >> DTC B1D21-13: Remote Control Switch - Circuit open >> Possible Causes