{"nhtsa_id":10207196,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-02-04","date":"2022-01-06","document_id":"LI46.80-P-072750","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Complaint The fault code C112502 is logged (as current or stored) in the rear axle control unit (N68/4). Cause The fault code is caused by communication with the ESP control unit: 1. After carrying out a quick test or performing a diagnosis on the ESP control unit (N30/3): This fault code occurs in the ESP control unit (N30/3) as a result of the diagnosis performed with XENTRY Diagnosis. At the point of diagnosis, the ESP control unit (N30/3) sends the value \"ERROR\" on the FlexRay. The rear axle steering control unit (N68/4) is not able to process this value and logs the fault code C112502. 2. As a result of a fault code logged in the ESP control unit (N30/3): As a result of the fault code logged in the ESP control unit (N30/3), the ESP control unit (N30/3) sends the value \"ERROR\" on the FlexRay and the rear axle steering (N68/4) switches to the safe mode provided for this purpose. Remedy Re. cause 1: If fault code C112502 does not occur until after a quick test or after a diagnosis performed directly in the ESP control unit (N30/3), the fault code can be ignored and deleted directly in the rear axle steering control unit (N68/4). If the fault code is current, perform an ignition off/on so that the fault code is only registered as stored. Re. cause 2: If fault code C112502 is already present when the first quick test is carried out, check and process the fault code(s) in the ESP control unit (N30/3). Here too, the fault code can be ignored and deleted directly in the rear axle steering control unit (N68/4).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10207196-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10207196-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10207196","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["C1125"],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG EQS 53","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"C 300","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"EQS 450","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"EQS 580","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S 500 4MATIC","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S 580 4MATIC","year_from":2022,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"S 680 4MATIC","year_from":2022,"year_to":2022,"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":[]}