{"nhtsa_id":11018626,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-29","date":"2025-05-22","document_id":"LI82.85-P-079271","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message \"SOS - Service not activated\" is displayed in the instrument cluster. Cause The message \"SOS - Service not activated\" tells the customer that \"over-the-air\" registration of the vehicle with the Mercedes Intelligent Cloud is not possible. On a gray import vehicle, this is due to the fact that the SIM card installed in the HERMES communications module cannot dial into the mobile phone network in the importing country. Remedy The only way of avoiding the message in the instrument cluster is to deactivate the HERMES module using the 09o deactivation process after obtaining the customer's consent. After deactivation, the HERMES control unit (N112/9) has the operating status \"Inoperative\". The message \"SOS not ready\" appears in the audio/COMAND display (A40/8) and may also appear in the instrument cluster. This display message tells the customer that the emergency call function is not available. In addition, the workshop must attach a label (2 x part number A9078172900 required) to the cover of the emergency call button in the overhead control panel and to the emergency call button itself. Replacing the hardware of the HERMES communication module is not effective.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018626-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018626-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018626","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES BENZ","model":"G500","year_from":2002,"year_to":2008,"match":null,"vehicle_ids":[]},{"make":"MERCEDES BENZ","model":"G55","year_from":2003,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"MERCEDES BENZ","model":"G550","year_from":2009,"year_to":2009,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"A 220","year_from":2019,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG A35","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG 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