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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: Engine are shown. Show all

Bulletins, newest first
B1701212022-06-21. 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.
B6105202020-04-20. Service bulletin. ENGINE. CCM DISPLAYED "INCREASED BATTERY DRAIN" CAUSED BY CONTROLLER: This Service Information Bulletin (Revision 1) replaces SI B61 05 20 dated February 2020. Electrostatic discharge at standstill / start engine. Energy management" The results of the Energy Diagnosis test plan identifies the Controller as the root cause of the CCM. The Controller delays the vehicle going to sleep by up to 6 minutes. In some cases this will cause the CCM 415 to be displayed when starting the vehicle. Replacing the Controller in this case will not correct this situation.
B1110192019-09-23. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). CRANKCASE BEDPLATE DELIVERY STOP: CRANKCASE BEDPLATE. INFORMATION Reimbursement for this Delivery Stop/Repair Action will be via normal claim entry.
B1223192019-08-19. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; EQUIPMENT:ELECTRICAL. DIAGNOSTIC HINT: CATALYTIC CONVERTER INSPECTION AFTER LOSS OF CRANKSHAFT SIGNAL. In certain situations when the crankshaft position signal is lost while driving the malfunction indicator lamp (MIL) and an engine malfunction check control message (CCM #29) may be displayed. The engine may run roughly or with reduced power.
B1110192019-08-19. Service bulletin. ENGINE. DELIVERY STOP: CRANKCASE BEDPLATE. On affected vehicles the crankcase bedplate may not have been installed correctly.
B3301192019-02-25. Service bulletin. ENGINE; SUSPENSION:MULTIPLE AXLE. DRONING NOISE FROM THE REAR AXLE. A humming/droning noise is heard with vibration during partial to full engine load in higher gears. The tuning of the rear suspension mount for the differential.
B1222162019-01-07. Service bulletin. ENGINE AND ENGINE COOLING. WATER INJECTION SYSTEM WATER LEVEL TOO LOW. Check Control (CC) Message Water level too low, engine performance only available to a limited degree is displayed. A fault may be stored in the DME control unit: 0x124015 - Water injection system, working area: Pressure too low 0x124013 - Water injection system, reversible flow valve, plausibility: No pressure reduction. Corrosion in the water injection valve block.
B1223182018-10-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. S55 - CHECK CONTROL MESSAGE: DRIVE FAULTY: Check Control Message (CCM) ÒDrive faultyÓ is display for 5 seconds
B1222162018-04-23. Service bulletin. ENGINE. WATER INJECTION SYSTEM WATER LEVEL TOO LOW: Check Control (CC) Message Water level too low, engine performance only available to a limited degree is displayed.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.