Home › Jaguar › 2018 › XF S, RWD › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Gateway Module (GWM) -- XF/X260 › Diagnostic Trouble Code Index DTC: Gateway Module (GWM) › Description And Operation › Gateway Module (GWM) › DTC B11DB-49: Battery Monitoring Module A - Internal electronic failure › Possible Causes