{"nhtsa_id":10227141,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-12-05","date":"2022-11-10","document_id":"LI20.10-P-075374","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault code U019F with XENTRY diagnosis. Verify the following connections are clean and tight. Correct any problems and retest pump actuation: -12V plug at M75/11 -48V plug at M75/11 -48V connector X192/4 -Connections at 48V fuse box F153/2 -Sockets 1,2, and 5 at connector 2 of MRG1 control unit -M75/11 circuit 41 ground If actuation and above connections are OK, but resistance between M75/11 and engine block is less than 2 ohms or heat shield touching coolant pump, proceed with below steps.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227141-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227141-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10227141","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["U019F"],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG CLS53","year_from":2019,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E53","year_from":2019,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E53 S","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLE53","year_from":2021,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GT53","year_from":2019,"year_to":2023,"match":"base","vehicle_ids":["2019_mercedes-benz_amg-gt","2020_mercedes-benz_amg-gt","2021_mercedes-benz_amg-gt","2022_mercedes-benz_amg-gt","2023_mercedes-benz_amg-gt"]}],"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":[]}