{"nhtsa_id":11021821,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-08-13","date":"2025-08-05","document_id":"LI54.18-P-079535","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Complaint Vehicle does not start, can also not be driven electrically. The following fault messages are displayed in the instrument cluster: Red fault message \"HV battery\" with the addition \"Towing not possible\" Vehicle start not possible in yellow Cause Plug X292x1 / X296x1 not engaged correctly or plug defective. Remedy Requirement: Before carrying out test work, it must be ensured that the person performing the work has successfully completed the required qualification for work on the high-voltage system. Test: Check plug X292x1 / X296x1 as follows: Please first take a photo of the plug X292x1 / X296x1 before carrying out further checks. If a gap can be seen between the outer housing and plug housing of the plug X292x1 / X296x1, the plug X292x1 / X296x1 is not engaged correctly, see \"Plug assembly\" Annex. Please open a TIPS case and attach a photo of plug X292x1 / X296x1. Disconnect the plug X292x1 / X296x1 and try to shift the outer housing with the interlock plug above forward in a disconnected state. If this is not possible, the plug X292x1 / X296x1 is OK, see video \"Check plug X292x1_X296x1_OK state\" in Annex. If this check confirms that the outer housing can be shifted forward despite the disconnected plug X292x1 / X296x1, the plug X292x1 / X296x1 including wiring harness is not OK (please attach video) and must be replaced. Please attach a photo of the label to the TIPS case, see Annex \"Position of label\" Assembly: If the outer housing cannot be shifted forward after the check above, then the plug X292x1 / X296x1 can be installed properly as per the \"Plug assembly\" instructions, see Annex. Important note: If the plug was installed correctly, no gap between the outer housing and plug housing must be visible, see picture 5 from \"Plug assembly\" instructions Annex. There is no additional engaging for the outer housing. In addition, the plug X292x1 / X296x1 must be fixed in place with a cable tie, see \"Gap / cable tie note\" picture in the Annex.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021821-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021821-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11021821","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG C63 S E","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GT63","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_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":[]}