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Service bulletins for the 2018 BMW 540i

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.

286 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
B6515232023-06-26. Service bulletin. ELECTRICAL SYSTEM. After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
B6101232023-06-26. Service bulletin. ELECTRICAL SYSTEM. Due to a software error, the vehicle sporadically does not achieve sleep mode. As a result, the 12-volt battery becomes discharged and may cause a no-start condition.
B5146162023-06-26. Service bulletin. STRUCTURE:BODY:TAILGATE. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
SIB6608232023-05-15. Service bulletin. ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR. Issues with the various functions of the camera-based driver assistance systems (KAFAS system) can possibly lead to following customer complaints: KAFAS camera system deactivates itself, due to system restrictions that are not clear to the customer KAFAS camera system cannot be activated due to system restrictions that are not clear to the customer Road signs are sporadically not detected.
B8414222023-05-01. Service bulletin. LANE DEPARTURE:LANE KEEP:NAVIGATION SYSTEM/SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Customer is shown an incorrect GPS location in the vehicle (i.e., Nav Map, coordinates).
B8408222023-05-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE (VoLTE) function. For this purpose, the SIM card must perform an IMS registration in the mobile communication network. Due to a production error, the telematics control units were delivered without an IMS configuration. The Connected Drive voice services (Concierge Call, BMW Assistance, and emergency call voice) can no longer be used regionally in the US in vehicle with telematics control units ATM-1 and TCB-4G. Voice control of the vehicle and all other telephone (paired mobile devices) functions are not affected. Emergency call location data is unaffected.
B6516232023-05-01. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Customer states there is no audio playback (telephony, navigation, radio) and system sounds (PDC, turn indicators, acoustic signals) may also have failed.
B6304182023-05-01. Service bulletin. EXTERIOR LIGHTING. One or more of the LED daytime running lights are dim or discolored.
B6101232023-05-01. Service bulletin. ELECTRICAL SYSTEM. Due to a software error, the vehicle sporadically does not achieve sleep mode. As a result, the 12-volt battery becomes discharged and may cause a no-start condition.
B3204202023-05-01. Service bulletin. STEERING. A groaning type noise is heard during the height adjustment.
B2604222023-05-01. Service bulletin. ENGINE AND ENGINE COOLING. There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32 F (0 C) or lower.
B2402232023-05-01. Service bulletin. POWER TRAIN. BMW AG has issued a Delivery Stop: Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.
B2604222023-03-20. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32 F (0 C) or lower. The noise goes away as the vehicle/driveline reaches operating temperature.
B8414222023-01-30. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Customer is shown an incorrect GPS location in the vehicle (i.e., Nav Map, coordinates).
B6133222023-01-30. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Due to a software error, Remote Software Upgrade (RSU) and Remote Support are currently not possible. Additionally, the Integrated Owner's Handbook cannot be displayed.
B6129222023-01-30. Service bulletin. STEERING. The saved steering column positions, vertical and horizontal, are not stored long term.
B2604222023-01-30. Service bulletin. ENGINE AND ENGINE COOLING. There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32F (0C) or lower.
B2402222023-01-30. Service bulletin. STRUCTURE. A cracking, metallic noise from under the center of the vehicle.
B1706172023-01-30. Service bulletin. ENGINE AND ENGINE COOLING. Coolant leaking from the engine compartment. Traces of coolant leaking from the expansion tank of the low temperature cooling system.
B5405212023-01-03. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. The sunroof will not operate in either direction. There are NO faults stored related to the sunroof. If the vehicle has any faults stored related to the sunroof, this bulletin does not apply.
B6519222022-12-12. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. The customer complains that the radio stations change by themselves.
B6504142022-12-12. Service bulletin. LANE DEPARTURE; UNKNOWN OR OTHER; AIR BAGS; SEATS:BARRIERS; BACK OVER PREVENTION. According to the customer, the airbag warning light was on, but it may not be illuminated when the vehicle arrives in the workshop. 1. ACSM fault code "930A60 - Seat occupancy detection, front passenger; malfunction" is stored. The fault may or may not currently be present. Or 2. ACSM fault code "930A1C - Front passenger seat occupancy detection transmitting fault(moisture)" is stored. The fault may or may not currently be present.
B6203222022-12-12. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. After programming, the customer may complain that the Sport Mode display is not fully displayed in the instrument cluster. Instead of a red background in sport mode, the background is displayed in blue (like ECO PRO mode).
B6112222022-12-12. Service bulletin. VISIBILITY. After opening the vehicle with the radio remote control and changing the profile, the exterior mirror settings are lost.
SIB6509222022-10-17. Service bulletin. EQUIPMENT:ELECTRICAL. The sound output intermittently drops out entirely. This can be reproduced with all audio sources as well as telephone and voice output.

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