{"nhtsa_id":10249537,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-02-02","date":"2024-01-12","document_id":"LI80.50-P-077350","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE","mfr_system":null,"summary":"Complaint Customer complains about anti-theft alarm system triggering without obvious cause when the vehicle is parked and/or when entering the vehicle. All MFA2 and 167 derivates with code 882 may be affected. This is caused by a sporadic loss of communication to the anti-theft alarm system [N26/6]. In many instances there are one or more FCs U110D87, U001988, U016787 stored in the control units anti-theft alarm system [N26/6] and/or signal acquisition and actuation module [N10] / [N10/6]. The alarm system memory may contain several alarm sources. Please process all following points in succession: 1. Check - Power supply of the overhead control panel [N70] - Ground points of the overhead control panel [N70] • Model series 118, 177, 247: W78 • Model series 167: W15/2 • Model series 243: W78/2 - LIN lines between overhead control panel [N70] and alarm siren [H3/1] - CAN lines between overhead control panel [N70] and signal acquisition and actuation module [N10] or [N10/6] 2. Open TIPS case - Open a TIPS case for vehicles: • As of manufacturing date 01.02.2022, except production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa • As of manufacturing date 01.08.2022 and production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa - Attach photo of overhead control panel label (see example images) - Add control unit log of anti-theft alarm system [N26/6] 3. Remedy for vehicles prior to manufacturing date 01.02.2022 (except production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa) or 01.08.2022 (production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa) - If the problem cannot be reproduced, the overhead control panel [N70] (anti-theft alarm system [N26/6] is integrated) must be replaced.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10249537-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10249537-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10249537","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":["U0019","U0167","U110D"],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"A 220","year_from":2019,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG 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4MATIC","year_from":2022,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLS 600","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLS450","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLS580","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"MAYBACH GLS600","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"GLS 600","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"GLS 600 4MATIC","year_from":2022,"year_to":2023,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}