Service bulletin B840415

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	10147786
Published by NHTSA	2018-11-13
Manufacturer's number	B840415
Manufacturer's date	2015-10-01
NHTSA component	ELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

"The illumination (back lighting) for the E-Call (Emergency/SOS call) button in the FZD (sunroof module) overhead console does not work. This picture shows the E-Call button illumination (back lighting) not working. Note: Pressing the E-Call button will start an SOS call, even though the back lighting is not working.This picture shows E-Call illumination (back lighting) working. AFFECTED VEHICLES This Service Action involves the F34 (3 Series Gran Turismo) and F36 (4 Series Gran Coupe) models, produced from 7/27/2015 to 7/30/2015. Please perform it the next time this vehicle comes to your workshop. 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. Missing wiring harness for the illumination of the E-Call button."

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 328I	2015, 2016
BMW 335I	2015, 2016
BMW 428I	2015, 2016
BMW 435I	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
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
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.
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SIB011918	2022-07-18. 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 Nitrogen Oxide (NOx) Sensor(s) to: 10 years/120,000 miles as determined by the vehicle original in-service date.
SIB651312	2022-07-05. Service bulletin. The Headunit High (HU-H), also called NBT, began replacing the Car Information Computer (CIC) on certain MY2013 vehicles with option 609 (as of 7/2012 production). This uses map North America NEXT. The Headunit High 2 (HU-H2), also called NBT-EVO, superseded the NBT HU and was introduced in 3/2014. This uses map North America EVO. The Headunit High 4 (HU-H4, also called MGU21) superseded the MGU starting with certain MY2021 vehicles with option code 6U3 Live Cockpit Professional. This uses map North America JOY. The ENTRY Media/Navigation (HU-B) is the low line business version of the navigation system and was introduced in 3/2014. This uses map North America ROUTE. The ENTRY NAV EVO (HU-B2) replaced Entry Media/Navigation as the low-line business version and was introduced in certain MY2018 vehicles. This uses map North America WAY.