Home >> Jaguar >> 2013 >> XJ Base, AWD >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Switch (TCS) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Switch (TCS) >> Description And Operation >> Transmission Control Switch (TCS) >> B1243-01 Winter Button Mode Indicator - General Electrical Failure >> Possible Causes