Home › Jaguar › 2017 › XJR L › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code (DTC) Index DTC: TELEMATIC Control Module (TCU) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Telematic Control Module (TCU) › Description And Operation › TELEMATIC Control Module (TCU) › U3000-49 Control Module - Internal electronic failure › Possible Causes