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Service bulletins for the 2020 BMW Z4

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.

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

By type

By component

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
B0902182020-09-14. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. NEW ECU VALIDATION NEEDED AFTER REPLACING CERTAIN CONTROL MODULES: With introduction of the new Headunit HU-H3 (MGU Media Graphics Unit), there is a new protection mechanism against tampering. If one or more of the following components needs to be replaced, the secure connection between them must be re-established: MGU TCB Telematic Communication Box (ATM-02) RSE Rear Seat Entertainment and/or KOMBISP18 instrument cluster Prior to re-establishing this connection, an electronic certificate must be created in the BMW backend for importing into the Vehicle. After the replacement of one of the mentioned Modules, the Control Module needs a valid certificate for it to communicate with the other Modules.
B6512202020-08-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. BMW CONNECTEDDRIVE APPS ARE NO LONGER AVAILABLE AFTER PROGRAMMING: After programming vehicle with "20-03" software, BMW ConnecedDrive apps are no longer available in the head unit. Software in the Head Unit High (HU-H3).
B6507092020-08-31. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. NAVIGATION SYSTEM - REPORTING MISSING OR INCORRECT ROADMAP DATA: Do not replace parts and do not program the vehicle. Roads can change by up to 15% every year. To ensure the best navigation experience, we do everything in our power to create the best maps. Your reports help us to detect changes in your area and keep future versions of our maps as accurate as possible. Therefore, a road map error or missing data must be reported directly to the map supplier.
B6611202020-06-15. Service bulletin. ELECTRICAL SYSTEM. REVERSING ASSISTANT LIMITATIONS: The Reversing Assistant function is not operating to customer expectations. Some possible customer concerns are: Vehicle does not avoid objects in its path tires or wheels contact the curb reversing Assistant only works for a short distance.
B6609202020-06-15. Service bulletin. ELECTRICAL SYSTEM. SURROUND VIEW WRONG VEHICLE DISPLAYED AFTER PROGRAMMING: After programming the wrong vehicle model is displayed in the Central Information Display (CID) when the Surround View is activated.
B5113182020-06-15. Service bulletin. VISIBILITY; ELECTRICAL SYSTEM; POWER TRAIN. LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE: Any or all of these conditions may be present: A. The exterior rearview mirror glass is discolored or cracked B. The power windows and folding mirrors may not operate C. One or more of the following LIN bus faults are stored in the BDC (Body Domain Controller): D90C03 LIN bus master B: short circuit - BDC D90C04 LIN bus master B: No communication - BDC D90C05 LIN bus master B: Communication failed - BDC D90D07 Operating facility switch block (LIN): Missing LIN slave D90D0A exterior rearview mirror left (LIN bus): Absent LIN slave - BDC D90D0D exterior rearview mirror right (LIN bus): Absent LIN slave - BDC 804246 exterior rearview mirror left (LIN bus): Heating or electrochrome: faulty - BDC 804256 exterior rearview mirror right (LIN bus): Heating or electrochrome: faulty - BDC 804265 exterior mirror left or right: Excess temperature - BDC 804260 exterior mirror left or right: Overvoltage - BDC 804261 exterior mirror left or right: Undervoltage - BDC Faulty exterior rearview mirror electronics have created a short on the LIN bus damaging the mirror glass and causing functional errors in power window and exterior mirror operation.
B8402202020-05-18. Service bulletin. ELECTRICAL SYSTEM. REMOTE 3D VIEW NOT AVAILABLE: Remote 3D View cannot be launched In the BMW ConnectedDrive App. Software error in the Advanced Telematics Module 2 (ATM2).
B8401202020-05-18. Service bulletin. ELECTRICAL SYSTEM. BMW CONNECTEDDRIVE SERVICES ARE NOT AVAILABLE: The BMW ConnectedDrive services are not available for an extended period. This may include: Calls in the BMW Assistance app (Concierge Service) Vehicle data and status in the BMW ConnectedDrive app Remote services Remote 3D View Real Time Traffic Information (RTTI) Weather News Software error in Advanced Telematics Module 2 (ATM2).
B6113202020-05-18. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. SERVICE ACTION - CHECKING THE DUAL STORAGE SYSTEM AND REPLACE IF NECESSARY: In the event of an accident the two-battery Dual Storage System (DSS) is disconnected from the electrical system via an internal relay. In some cases the relay is stuck closed and a fault is set. In these circumstances: A crash shutdown of the DSS does not occur The power distribution box is supplied with power until the DSS is fully discharged
B8402142020-04-27. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. CONNECTEDDRIVE/BMW ASSIST SYSTEM DIAGNOSIS INFORMATION: This Service Information Bulletin (Revision 7) replaces SI B84 02 14 dated May 2019. 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. 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.
B6631192020-04-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; POWER TRAIN:MANUAL TRANSMISSION:SHIFT PATTERN INDICATOR. REARVIEW CAMERA: SPORADICALLY NO IMAGE IS DISPLAYED: This Service Information Bulletin (Revision 2) replaces SI B66 31 19 dated February 2020. When reverse gear is selected or the rear view camera is activated sporadically no image is displayed on the Central Information Display (CID). If the ignition is cycled off and back on the function is restored. Software error between the head unit and the rear-view camera.
B6603202020-04-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. DIAGNOSTIC HINT: DRIVING ASSISTANCE SUPPORT REDUCED CHECK CONTROL MESSAGE DISP: Driving Assistance support reduced Check Control Message (CCM) is displayed sporadically. All or some of the system functions maybe inoperative.
B6508202020-04-20. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. DISPLAYS SPORADICALLY REACT VERY SLOWLY WHEN SCROLLING IN THE AUDIO MENU: Sporadically the reaction time of the display in the instrument cluster the head-up display or in the CID (Central Information Display) is very long. This can occur when browsing/scrolling through lists in the audio menu switching radio stations or albums. Software in the Head Unit High (HU-H3).
B6108202020-04-20. Service bulletin. ELECTRICAL SYSTEM; PARKING BRAKE; BACK OVER PREVENTION. ALARM ACTIVATES WHEN OPENING THE TRUNK: When the trunk is opened using the trunk lid mounted switch the vehicle alarm will intermittently activate. Opening the trunk using the remote control button does not cause this issue to happen. CAUSE Anti-theft alarm system software.
B6631192020-03-16. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. REARVIEW CAMERA. SPORADICALLY NO IMAGE IS DISPLAYED: This Service Information Bulletin (Revision 1) replaces SI B66 31 19 dated October 2019. When reverse gear is selected or the rear view camera is activated sporadically no image is displayed on the Central Information Display (CID). If the ignition is cycled off and back on the function is restored. Software error between the head unit and the rear-view camera.
B6101202020-03-16. Service bulletin. ELECTRICAL SYSTEM. ACCESSORIES DO NOT POWER ON: Customer is not able to power accessories using the 12 volt power socket. Design change to reduce short circuits and blown fuses.
B8402202020-02-18. Service bulletin. ELECTRICAL SYSTEM. REMOTE 3D VIEW NOT AVAILABLE: Remote 3D View cannot be launched In the BMW ConnectedDrive App. Software error in the Advanced Telematics Module 2 (ATM2).
B8401202020-02-18. Service bulletin. ELECTRICAL SYSTEM. BMW CONNECTEDDRIVE SERVICES ARE NOT AVAILABLE: The BMW ConnectedDrive services are not available for an extended period. This may include: Calls in the BMW Assistance app (Concierge Service) Vehicle data and status in the BMW ConnectedDrive app Remote services Remote 3D View Real Time Traffic Information (RTTI) Weather News Software error in Advanced Telematics Module 2 (ATM2).
B6601202020-02-18. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. ACTIVE PARK DISTANCE CONTROL: SETTING MENU NO LONGER AVAILABLE AFTER PROGRAMMING. The activation setting for Active Park Distance Control (aPDC) is no longer available after programming. In this case the customer can no longer activate or deactivate the function. Note: The setting (activated or de-activated) which was selected prior to programming the vehicle will be retained. Software error in the head unit HU-H3 occurring with vehicle Integration Level (I-Level) S18A-19-11-500 to S18A-19-11-540.
B6209192020-01-21. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. INSTRUMENT CLUSTER REMAINS DARK AFTER STARTING THE VEHICLE: Instrument cluster remains dark after starting the vehicle. After a restart normal functionality is restored. Software error in the KOMBI (Instrument Cluster).
B1203192020-01-21. Service bulletin. ELECTRICAL SYSTEM. ENGINE DOES NOT START BELOW FREEZING TEMPERATURES: Engine designation correction Parts availability Warranty. The engine will not start at temperatures below freezing. The starter does not turn and engage.

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