Service bulletin B840315

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10147271
Published by NHTSA	2018-11-05
Manufacturer's number	B840315
Manufacturer's date	2015-09-01
NHTSA component	ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

"HU-B: Bluetooth Connection Fails Sporadically. The Bluetooth system works intermittently. One or more of the following scenarios may occur: Bluetooth pairing is not possible - display shows ""Please wait"" Unable to select the check box to activate Bluetooth Device does not reconnect to the vehicle after a key cycle Audio interference noise is heard listening to iPod etc. When trying to access the user manual, the display shows ""Please wait"" Incorrect software installed in the HU-B (Headunit Basic)."

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories

Vehicles listed
BMW 228I	2014, 2015, 2016
BMW 320I	2014, 2015, 2016
BMW 328D	2014, 2015, 2016
BMW 328I	2014, 2015, 2016
BMW 330E	2016
BMW 335I	2014, 2015, 2016
BMW 340I	2016
BMW 428I	2014, 2015, 2016
BMW 435I	2014, 2015, 2016
BMW ACTIVE HYBRID 3	2014, 2015
BMW M235I	2014, 2015, 2016
BMW X3	2014, 2015, 2016
BMW X4	2015, 2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2026332	2026-07-08. Electrical
26V441000	2026-07-08. ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
24V608000	2024-08-13. ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP
2015343	2015-07-30. Electrical

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B011124	2024-12-31. Warranty extension. the High-Voltage (HV) Battery Assembly Cell Modules Temperature Sensors (Internal NTC repair kit-specific) limited warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles as determined from the original in-service/first delivery date.
B510819	2024-02-01. Service bulletin. The basic conditions for initializing the power windows are not met.
B611305	2024-02-01. Service bulletin. The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.
B651523	2023-06-26. Service bulletin. After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
B840822	2023-05-01. Service bulletin. 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.
B630917	2023-05-01. Service bulletin. Exterior rear lights do not work.
B662419	2022-10-31. Service bulletin. Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.
B610120	2022-10-31. Service bulletin. Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12-volt power socket plug. Alternatively, it will only operate when constant downward hand pressure is maintained.
SIB011219	2022-10-17. Service bulletin. Component-Specific Limited Warranty Extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Radiator Grille Upper and Lower Active Air Flaps to: 15 years/150,000 miles as determined by the vehicle's original in-service date. 1. Air flap control (link) active, upper (G12, G30 and G32) 2. Air flap control (drive), active, upper 3. Air flaps, upper (assembly) 4. Air flaps, lower (assembly) For eligible MY 2017 BMW 530i (B460) vehicles that are currently registered in the State of California (CA) or a State that has fully adopted the State of California PZEV/SULEV regulation (CT, ME, MD, MA, NJ, NY, RI, and VT), the standard emission-related coverage for the Radiator Front Grille Air Vent Flaps is15 years/150,000 miles. This component-specific limited warranty extension applies to defects in materials or workmanship.' This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. A check control message or MIL (Malfunction Indicator Lamp) may be illuminated with faults stored related to the upper and/or lower active air flap(s). Potential causes include: Faulty upper air flap link (G12, G30, G32) Faulty upper air flap actuator (G01, G02, G12, G30, G32) Faulty upper flap assembly (G01, G02, G12, G30, G32) Faulty lower air flap assembly (G01, G02, G12, G30, G32) Software error in the DME affecting the upper flap (G01, G02 only) Or: Upon visual inspection, the passenger side upper active air flaps are either stuck open or closed, and they will not move and there are no faults stored for the active air flaps (With no check control message or check engine light or displaying)
SIB010921	2022-10-17. Service bulletin. Component-Specific Limited Warranty Extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Leak Diagnosis Module with hose assembly (NVLD, shown) to: 15 years/150,000 miles as determined by the vehicle's original in-service date. For eligible MY 2017 BMW 530i Sedan and xDrive (B460) vehicles that are currently registered in the State of California (CA) or a State that has fully adopted the State of California PZEV/SULEV regulation (CT, ME, MD, MA, NJ, NY, RI, and VT), the standard component-related coverage for the NVLD is 15 years/150,000 miles. This component-specific limited warranty extension applies to defects in materials or workmanship. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusions that apply to the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks. Over time, the Leak Diagnosis Module (NVLD) (with connected hose) component material may fail, this can create a fine leak to develop in the Evaporative Emission Control System (EVAP). Should this occur, corresponding fault codes will be stored in the DME memory and the MIL (Malfunction Indicator Lamp) will illuminate.