Vehicle Platform: Nexon-EV ,Nexon-MCE ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.4 Date: 16-09-2020 Author: TCM COC Page: 60 of 121 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. B2800 - 57:- Internet connection error - invalid / incomplete software component Overview: ISO Code B2800 – 57 Internet connection error - invalid / incomplete software component Customer Symptom Telematics ECU features will not be working Fault Effects (On Vehicle) Remote , Vehicle security, Alerts and other telematics features will not be working Fault Detection Condition Relevant functional DTCs present in TCU .DTC is set in case of internet connection error with TCU. Normal Operating Condition TCU have proper internet connection in normal condition. Probable Trouble Area Faulty TCU Internal Component failure Component for Internet access reports errors on start Healing Condition 1. Verify DTC ageing-Clear in case of ageing 2. Verify any other communication related DTCs present 3. Verify TCU DTCs and check for any related DTCs 4. Follow TCU trouble shooting guideline to clear the relevant functional DTCs 5. Check for internal component failure 6. Check for Internet access reports errors on start 7. Reflash TCU 8. If problem persists after above steps (from 1 to 7) then follow TCU
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