Service bulletins for the 2018 BMW M4
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.
135 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Fuel system are shown. Show all
| B170121 | 2022-06-21. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. The quick disconnect coupling on the cylinder head coolant vent line could break at the cylinder head. This would lead to loss of coolant from the engine. |
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| B130315 | 2018-12-10. Service bulletin. FUEL SYSTEM, GASOLINE; EQUIPMENT. SI B13 03 15 February 2016 Fuel Systems Technical Service This Service Information bulletin supersedes SI B13 03 15 dated March 2015 and replaces SI B13 04 13 dated March 2014. SUBJECT N20, N26, N55, N63TU, S63TU and S55 Engines: Bosch Injector ETK Part Number Error. The current version of the ETK incorporates multiple part number errors for the Bosch type injectors. Ordering the injectors by VIN number or manual identification in ETK may result in an incorrect part number. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.