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Service bulletins for the 2014 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.

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

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

Bulletins, newest first
6117142018-11-13. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. "Intelligent Battery Sensor Diagnosis Hints. The vehicle enters the workshop with one or more of the following complaints: * Check Control Message related to battery discharge * No-start condition * Consumer power reduction (reduced blower speed, heated seats operation, etc.) * The following fault codes may be stored in the DME a. 2E8B - Intelligent battery sensor, signal b. 2E8C - Intelligent battery sensor, function c. 2E8D - Intelligent battery sensor, signal transmission d. 2E8E - Intelligent battery sensor, communication CAUSE A faulty battery or IBS sensor (not both) The power management system and IBS in the vehicle cannot determine if the battery needs to be replaced. This is normal operation for all E-Series vehicles because they do not have the Advanced IBS sensor that the F-Series vehicles do. An external battery tester (Midtronics EXP-1000) must be used to determine if the battery needs to be replaced. Energy Diagnosis will not prompt for a battery replacement unless the battery is ""aged."" When energy diagnosis identifies the battery as ""aged,"" it means the amount of energy discharge over the course of the life of the battery has reached its maximum (worn out). In most cases, energy diagnosis states that the battery is OK. This is typically an indication of the current State of Charge (SoC), not the State of Health (SoH). The SoC is defined as the current amount of energy left in the battery (displayed as a percentage). The SoH is defined as an evaluation of the condition of the battery over a period of time (displayed as a percentage). For more information about batteries, refer to Training Manual ST051, ""07 Battery Basics."""
8401142018-11-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL. ConnectedDrive/BMW Assist System Information and Availability. ConnectedDrive features are partially or completely inoperative. Examples of some of these features are listed below: * BMW Assist Inoperative ? SOS call ? Roadside Assistance call * My BMW Remote App * BMW Online - Google local search * Concierge CAUSE The Electronic Subscriber Agreement (ESA) is inactive. * No active contract for ConnectedDrive features Offboard Availabilty (Backend) system issues * The external network was/is inoperative. * No data is sent to the vehicle.
6525132018-11-13. Service bulletin. ELECTRICAL SYSTEM. "ConnectedDrive/BMW ASSIST Features Are Inoperative. ConnectedDrive features are partially or completely inoperative. * No traffic information (RTTI / ARTTI) * BMW ASSIST ""My Info"" service doesn't work. CAUSE The Electronic Subscriber Agreement (ESA) is inactive. * No active contract for ConnectedDrive features Offboard Availability (Backend) system issues * The external network was/is inoperative. * No data is sent to the vehicle."
1204152018-11-13. Service bulletin. ELECTRICAL SYSTEM; ENGINE. SUBJECT DME Internal and Valvetronic Faults Set at Cold Ambient Temperatures. The Service Engine Soon light (MIL) can be illuminated with the erroneous internal and Valvetronic faults stored in the DME. The MIL will only come on if the fault has been detected on two (or more) consecutive drive cycles. The following fault codes may be stored in the DME: E Seriesz 36AE - DME, internal fault, Valvetronic: Current implausible One or more of the following secondary faults may also be stored: z 2DE2 - Valvetronic, actuation, voltage phase: Line disconnection z 2DE3 - Valvetronic, actuation, volt phase: Line disconnection z 2DE4 - Valvetronic, actuation, volt phase: Line disconnection F Seriesz 1F0905 - DME, internal fault, Valvetronic: Current implausible One or more of the following secondary faults may also be stored: z 135B10 - Valvetronic, actuation, voltage phase: Line disconnection z 135B11 - Valvetronic, actuation, volt phase: Line disconnection z 135B12 - Valvetronic, actuation, volt phase: Line disconnection Engine performance and driving characteristics are not affected. DME software diagnostic sensitivity.
B8402152018-11-05. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. Cannot Update Bluetooth Software (KISU Data). The vehicle does not accept the KISU (Customer Initiated Software Update) software update.
B6115152018-11-05. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. CAS Module Fails Programming with CoAPI Error 2082. During vehicle programming, the CAS (Car Access System) module fails to program with CoAPI error 2082 displayed. Refer to the attachment, which lists the affected CAS serial numbers. The following part numbers are affected: 61 35 9 287 534 61 35 9 226 238 61 35 9 227 053 61 35 9 287 535
B0120162018-11-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. FOOTWELL MODULE: LIMITED WARRANTY EXTENSION TO 8 YEARS/125,000 MILES. When performing ISTA/D diagnosis and/or a programming procedure (software update) on an affected vehicle, the Footwell Module (FRM) could fail. There is a compatibility issue with certain combinations of vehicle software (Plant Integration ILevel) and the Footwell Module hardware installed in the vehicle.
B6525162018-11-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. USB CABLE: BATTERY DISCHARGE/AUDIO FAILURE/RADIO RECEPTION. No sound from the radio, telephone, gong signal and or PDC. Poor radio reception and failure of the telematics systems. Possible Check Control system message: o Battery discharge when engine off. o Caution, no acoustic warning signals. Non BMW approved (third-party supplier) USB cable plugged into the USB port.
B8408162018-11-05. Service bulletin. ELECTRICAL SYSTEM. The underlying 2G technology for the GSM (Global System Mobile communication) COMBOX will no longer be supported by the cellular network providers after December 31, 2016. This COMBOX and the BMW Assist services that use its functionality will therefore no longer function after that date. The BMW Assist functionalities that are affected includes the following: SOS/E-Call including Automatic crash notification Concierge Service Remote Service Teleservices The vehicle's exisiting Bluetooth(r) wireless functionality is NOT affected.
B8403162018-11-05. Service bulletin. ELECTRICAL SYSTEM. SERVICE ACTION: GSM COMBOX DEACTIVATION / DISCONTINUATION WITH 4 YEAR ASSIST SERVICE. What's New: ? Model: Option code removed to prevent confusion about affected vehicles ? Situation: Information added about Bluetooth functionality that is not affect by this Service Action ? Correction: Information added about lease returns, loaner, CPO and used vehicles that are not eligible for the 3 customer options ? Information: Removed scenario regarding new/unsold Z4s & X1s ? Procedure: Added info about COMBOX retrofit that it does not affect Bluetooth functionality ? Warranty: Added info that the correct flat rate labor operation that corresponds to the option the customer selected is claimed and removed information about Z4s & X1s . The underlying 2G technology for the GSM (Global System Mobile communication) COMBOX will no longer be supported by the cellular network providers after December 31, 2016. This COMBOX and the BMW Assist services that use its functionality will therefore no longer function after that date. The BMW Assist functionalities that are affected includes the following: SOS/E-Call including Automatic crash notification Concierge Service Remote Service Teleservices The vehicle's exisiting Bluetooth(r) wireless functionality is NOT affected.
B8402142018-05-14. Service bulletin. ELECTRICAL SYSTEM. ConnectedDrive/BMW Assist System Diagnosis Information
SIB-84-03-142014-09-03. Service bulletin. COMMUNICATION; ELECTRICAL SYSTEM:SOFTWARE. BMW: WHEN USING IPHONE, VARIOUS CONNECTIVITY FAILURES OCCUR, SUCH AS DISCONNECTION OF CALL, LIST OF CONTACTS INCOMPLETE, DUE TO THE VARIANTS AND SOFTWARE USED. MODEL 2008-2014.

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