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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

Bulletins, newest first
B3303182019-01-07. Service bulletin. SUSPENSION. KNOCKING NOISE OR VIBRATION/DRONING NOISE FROM THE REAR AXLE. 1 A hard knocking noise is heard from the rear axle area during load reversals. 2 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.
B6210162018-12-10. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL. HeadUp Display does not Show Full Street Names. INFORMATION Design of the HUD has limited display area. (It can only show a certain number of text characters). NOTE: Parts replacement or programming the vehicle will not recitify the situation!
B8403142018-12-10. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT. Bluetooth Connection Failures. There are various connectivity failures with the following devices: Apple iPhones Samsung S6 and the S6 Edge. Connectivity failure examples are: Call disconnection - Call is transferred back to the handset. In some instances the call is then transferred back to the vehicle. Contact List incomplete General connection failures Apple iOS software (issue started with iOS 8.3 continues with iOS 9.x and its variants) Samsung S6 and S6 Edge device firmware.
B6609162018-12-10. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL; EQUIPMENT; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. """Collision Warning Failed"" or ""Pedestrian Warning Failed"" CCM Display. While driving, a Check Control Message (CCM) is displayed advising of the following: Front collision warning failed Pedestrian detection failed The following fault code is stored in the KAFAS (Camera-based Driver Assistance System): 0X800AC4 - Camera calibration failed The KAFAS camera is not properly mounted and secured to the mounting bracket on the windshield; And/ or: The mounting bracket glued to the windshield is not installed correctly. The pictures below show both incorrect and correct installation. This picture shows the KAFAS camera installed in the bracket. Notice the spacing highlighted by the ""green lines"""
B5123152018-12-10. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH; STRUCTURE:BODY:DOOR. SI B51 23 15 Body Equipment May 2016 Technical Service The Driver's Side Front/Rear Door Can No Longer Be Opened from the Outside This Service Information bulletin supersedes SI B51 23 15 dated September 2015.. A driver's-side door cannot be opened by the outside door handle. This concern can also affect the driver's side rear door on the F34 and F36. The Bowden cable has become detached.
B5112162018-12-10. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR; VISIBILITY:REARVIEW MIRRORS/DEVICES; VISIBILITY. Passenger Side Mirror Dimming Feature Operational Change. INFORMATION The automatically dimming exterior mirror function on the passenger's side has been deleted from the Option Code 430 as noted above. The automatic dimming function will continue to be operational on the driver's side mirror and rear view mirror.
B6206162018-12-10. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Instrument Cluster Resets during Active Navigation. The instrument cluster (MID KOMBI) fails sporadically (all gauges falling briefly to zero, flashing of all indicator lights) and resets. Reset occurs during active route guidance and predictably when passing certain geographical positions. Software error in navigation head unit
B8403142018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SI B84 03 14 February 2016 Communication Systems Technical Service This Service Information bulletin supersedes SI B84 03 14 dated October 2014. SUBJECT Bluetooth Connection Failures. There are various connectivity failures with the following devices: Apple iPhones Samsung S6 and the S6 Edge. Connectivity failure examples are: Call disconnection - Call is transferred back to the handset. In some instances the call is then transferred back to the vehicle. Contact List incomplete General connection failures CAUSE Apple iOS software (issue started with iOS 8.3 continues with iOS 9.x and its variants) Samsung S6 and S6 Edge device firmware CORRECTOPM None available at this time. We are currently working with the device manufacturer on a solution.
B6502162018-12-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. SUBJECT Audio System Speaker Testing. For audio system speaker testing there is a NED (Non Electrical Diagnosis) Test Plan available. CAUSE We previously recommended use of the Audio Test CD (ATC) from BMW. This CD has been discontinued.
B1303152018-12-10. 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.
B8408152018-12-10. Service bulletin. ELECTRICAL SYSTEM. "?SUBJECT During the QC1 the BMW Assist Test Call Fails . After the transport mode is deleted (during the QC1), a BMW Assist (SOS) test call is made by pressing the SOS/ E-Call button. However, the call only connects via voice (no data is transmitted). The operator indicates that a crash call has been sent. ATM fault code ""B7F348 - Provisioning without signature OTA"" is stored. The provisioning of the ATM (Advanced Telematics Module) has failed."
B6507092018-12-10. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Whistling Noise Coming from the Center Vent - A/C is Off . A very high pitched whistling or beeping noise is heard coming from the center vents. The flow of refrigerant through the expansion valve at certain temperature differentials.
B6201162018-12-10. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. "Vehicles which have had the Instrument Cluster (KOMBI) replaced may display incorrect CBS (Condition Based Service) data after programming. AFFECTED VEHICLES Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader. Incorrect SW calibration loaded after KOMBI replacement."
B5409072018-12-10. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM; EQUIPMENT. ?RETRACTABLE HARDTOP STATUS REQUEST SUPPLEMENT. INFORMATION Documents have been developed showing the known correct statuses for all hall sensors and micro switches used to operate the retractable hard top (RHT). This document is intended to act as a supplement to the diagnostic information available in ISTA. Comparing these statuses to the actual statuses of a vehicle with a functional problem may assist in narrowing down which sensor/switch is contributing to the functional problem. For E93, the status request may be found by connecting the car to ISTA and selecting: Control module functions/CTM Convertible top module/Diagnosis Requests ?Sensors/Switches For F33/F83, the statuses should be checked using the applicable test plan as instructed in attachment B54 09 07 F33 F83 RHT Status.pdf. For I15, the statuses should be checked using the applicable test plan as instructed in attachment B54 09 07 I15 Top Status.pd
B8406162018-12-03. Service bulletin. ELECTRICAL SYSTEM. ?BMW ONLINE NON-FUNCTIONAL: CHECK ICC-ID IN ACCOUNT. BMW Online/BMW ConnectedDrive not functional. Vehicle and service cockpit have different ICC-ID's (Integrated Circuit Card Identifier).
B8402142018-12-03. Service bulletin. ELECTRICAL SYSTEM. ?CONNECTEDDRIVE/BMW ASSIST SYSTEM DIAGNOSIS INFORMATION. ConnectedDrive/BMW Assist features are partially or completely inoperative. This Service Information bulletin is being published because vehicles are down for an extended period of time when researching system failures with ConnectedDrive or BMW Assist. This Service Information bulletin will assist you both in identifying the issue and providing technical support. CAUSE Not enough information is available for BMW NA engineers to assist the technician in diagnosing the root cause.
B7103182018-11-26. Service bulletin. EQUIPMENT:OTHER:LABELS; EQUIPMENT. REPLACE UNDER HOOD EMISSIONS LABEL This Service Information bulletin replaces SI B71 03 18 dated September 2017 What's New: ? The delivery stop has changed to a service action ? Label location picture updated. A service action has been issued (effective September 10, 2018) on Model Year 2019 BMW M4 Coupe vehicles that have been produced from July 3-31, 2018. The affected vehicles were equipped with an incorrect emissions label which must be replaced. Approximately 59 vehicles are affected by this service action. Affected vehicles show the campaign as "Open" when checked either in Warranty Vehicle Inquiry, AIR or ISPA Next and identified with the description: 0071520200 B710318 Service action: Replace Under Hood Emissions Label An incorrect 2018 emissions label was installed in the vehicle.
B6130172018-11-26. Service bulletin. ELECTRICAL SYSTEM. RAIN/LIGHT SENSOR (RLS): OIL LEAKAGE FROM GEL PAD. ??Oil leaking from the Rain/Light Sensor (RLS). Note: This oil serves as a separation medium between the RLS mounting gel pad and the windscreen. The oil ensures damage free disassembly in case of repair. CAUSE The oil that serves as the separation medium of the Rain/Light Sensor (RLS) gel pad and the windscreen leaks out. Expose the Rain/Light Sensor (RLS) and properly clean the area of all oily residue. Note: The separating oil usually leaks only once from the pad at the RLS. Due to the small oil quantity in the gel pad, additional oil leakage is not plausible. Leaking oil does not impair the function of the RLS.
B6509152018-11-05. Service bulletin. EQUIPMENT. SI B65 09 15 November 2016 Audio, Navigation, Monitors, Alarms,SRS Technical Service NBT Head Unit High (HU-H) Resets Intermittently or Permanently. The Head Unit-High (HU-H) resets intermittently or permanently. 1. The display is inoperative and there is no audio output 2. Automatic system start-up after a couple of seconds Fault Code E1C440 set No Fault Codes set Software error in the Head Unit High (HU-H)
B6504142018-11-05. Service bulletin. AIR BAGS. "AIRBAG WARNING LIGHT: ACSM FC 930A60 OR 930A1C SEAT OCCUPANCY DETECTION. According to the customer, the airbag warning light was on, but it may not be on 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. The front passenger seat occupancy mat consists of a seat occupancy mat with a capacitive sensor system. This means a front passenger is detected by measuring the resistance of the human body. The fault is set when moisture is detected on the mat itself."
B6136172018-11-05. Service bulletin. ELECTRICAL SYSTEM. "BATTERY DISCHARGE CCM (CHECK CONTROL MESSAGE) DISPLAYED: COMFORT ACCESS DISABLED. One or more of the following conditions are present: * CCM ""Battery. Discharge in standstill."", or similar, is displayed. * Comfort Access and contactless tailgate opening are not working. * Vehicle can still be unlocked with radio remote control (ID transmitter). Fault conditions are cleared upon engine restart. FEM (Front Electronics Module) software error Unauthorized (radio remote control out of range) access to vehicle has been attempted at least seven times with Comfort Access or Smart Opener (contactless tailgate opening) when the vehicle was locked. As a result of these unauthorized access attempts, the following conditions were set: * CCM ""Battery. Discharge in standstill."", or similar, is displayed * Terminal 30F (switched battery terminal when fault occurs) was deactivated, preventing Comfort Access and contactless tailgate opening."
B3406152018-11-05. Service bulletin. SERVICE BRAKES. Grinding Noise from Rear Brakes. Pebbles, road grit, or other foreign materials can get caught in between the brake protection (backing) plate and the brake disc(s), this may cause a disturbing noise in the rear axle area while driving.
B8402142018-11-05. Service bulletin. EQUIPMENT. ConnectedDrive/BMW Assist System Diagnosis Information This Service Information bulletin replaces SI B84 02 14 dated July 2014 What's New: Model - Removed models which no longer support BMW Assist functionality and added new models. Procedure - Add step requesting print out of ConnectedDrive Service Cockpit page Information - Add SI for ConnectedDrive Service Cockpit; updated the hyperlinks and email address for CD support team; deleted scenario for old CDMA unit which are no longer supported. ConnectedDrive/BMW Assist features are partially or completely inoperative. This Service Information bulletin is being published because vehicles are down for an extended period of time when researching system failures with ConnectedDrive or BMW Assist. This Service Information bulletin will assist you both in identifying the issue and providing technical support. CAUSE Not enough information is available for BMW NA engineers to assist the technician in diagnosing the root cause.
B6406132018-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. A/C Cooling: Intermittent Reduction of Air Flow What is new The date in repair procedure and warranty section has been changed for vehicles produced to September 30, 2013 and from October 1, 2013.. Customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than 30 minutes. INFORMATION Possibility of reproducing this situation is improved by the following conditions: High outside ambient temperature High humidity Note: It is very difficult to duplicate this issue. The fault may be reproduced under the following conditions: Air-conditioning system switched on Driving Experience switch NOT set to Eco Pro Slower fan speeds Temperature setting below 68F (20C) Trip duration at least 30 minutes Outside temperature above 68F (20C) NOTE: After parking the vehicle or switching off the air-conditioning system for at least 20 minutes, the symptom disappears (ice melts off evaporator and puddles under the car from the A/C drains). Evaporator starts to freeze up due to the position of the evaporator temperature sensor.

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