{"nhtsa_id":11028732,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-11","date":"2026-02-11","document_id":"LI27.60-P-080169","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Complaint Complaints of a harsh 3to4 upshift Cause Lost torque adaptation values and negative fill times of clutch K27. Remedy Short-term measure: Note: All steps—including resetting the learned values and performing the stationary adaptation—must be completed to resolve the concern. 1. Perform IPR and follow the provided instructions. 2. Perform Special Function \"Resetting of learned values 'Deceleration Mode'\" (VGS > Special Procedures > Special procedure > Resetting learned values Deceleration mode) 3. Complete the standstill adaptation Long-term measure: A software resolution for software levels 22A.3 (n3g222aa03ub) and 22A.4 (n3g222aa04ub) is in development. - Check VGS control unit log or eeprom .txt file for \"Program Status\" If the vehicle software level is not 22A.3 or 22A.4: A software resolution will not be created for these vehicles, please follow the short term solution to alleviate the concern. Once the software is released, an update on availability will be added in IPR and in this LI document.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028732-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028732-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028732","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"S 580","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S 580","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S 580 4MATIC","year_from":2022,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"S 580","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"S 580 4MATIC","year_from":2022,"year_to":2025,"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":[]}