{"nhtsa_id":11034536,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-06","date":"2026-07-01","document_id":"LI54.30-P-080649","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; STRUCTURE:BODY","mfr_system":null,"summary":"Complaint General information on the operation of the PRE-SAFE® Impulse system: The PRE-SAFE® Side Impulse system is a preventive, i.e. pre-collision occupant protection system. The task of the system is to provide additional protection to vehicle occupants when there is a risk of a side impact. It is not a restraint system component in the conventional sense and does not contain an detonator. A potential side-impact situation is detected by radar sensors. If the system detects an existing likelihood of a side impact, a reversible air cushion in the outer seat side bolster is briefly inflated by opening a valve. The resulting pulse preemptively increases the distance between the door and the occupant in order to move the occupant out of the danger zone. If the system has been activated, the following message appears on the instrument cluster: PRE-SAFE® Side Impulse inoperative. See Operator's Manual. Note: After system activation, diagnostic entry B1B3713 or B1B3813 is marked as active and stored in the ORC223 (N2/5) control unit. Cause After activation of the “PRE-SAFE® Side Impulse” system, the function is no longer available. Remedy Please check the tight seating and possible damage of the radar sensors B29/11 or B29/12. Then replace the gas generator on the affected side (R12/65 or R12/66). After replacing the gas generator (R12/65 or R12/66), please perform commissioning and SCN coding of the radar sensors B29/11 or B29/12 to ensure they are up to date. Note: In principle, it is not necessary to replace the air cushion in the \"PRE-SAFE® Side Impulse\" system, as it is designed for multiple activations (up to 10). Exception: After deployment of the sidebag (e.g., following a crash), exchange (air cushion with gas generator) of the \"PRE-SAFE ® Impulse Side\" is required in all cases.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034536-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034536-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034536","components":[{"id":"structure-body","name":"Body and frame","parent":null},{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG C43","year_from":2023,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG C43 4MATIC","year_from":2023,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG C63 S E","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG C63 S E 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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":[]}