Home >> Land Rover >> 2014 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) >> Description And Operation >> DTC B1179-04: Integrated GSM/GPRS Unit - System internal failures >> Possible Causes