Service bulletin B121219

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	10161550
Published by NHTSA	2019-06-24
Manufacturer's number	B121219
Manufacturer's date	2019-05-01
NHTSA component	POWER TRAIN; ELECTRICAL SYSTEM; STEERING

NHTSA's summary

The electrical machine electronics (EME) Printed Circuit Board (PCB) may not have been produced to specifications. In the event that the EME detects this condition it will shut down high-voltage electrical power. A shut down of high-voltage electrical power would result in a loss of propulsion increasing the risk of a crash. However the 12-volt electrical power remains functional to support power steering and braking.

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, Steering, Transmission and driveline

Vehicles listed
BMW I3	2014, 2015, 2016, 2017, 2018

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

Recalls for the same vehicles and component
2019190	2019-04-18. Electrical
19V310000	2019-04-17. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; HYBRID PROPULSION SYSTEM
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.
011024	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.
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.
TEC25	2022-08-01. Service bulletin. Tec25 Wishbone Return
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.
B012021	2021-12-27. Service bulletin. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle's Fuel Injectors to: 15 years/150,000 miles as determined by the vehicle's original in-service date.
B612016	2021-05-17. Service bulletin. The vehicle may exhibit any of the following at very low State of Charge (SOC) ? less than 8%: - Power loss or high voltage system shutdown while running range extender (REx). - Inconsistent performance of the REx. - High voltage system shutdown in vehicles without REx. - Excessively high range displayed in instrument cluster.
B321119	2021-04-26. Service bulletin. STEERING ASSISTANCE SPORADIC REDUCTION: The driver notices a reduction of steering assistance sporadically while in certain driving situations. Steering control is never lost when the reduction of assistance occurs.
B010321	2021-02-22. Service bulletin. I3 REX FRONT (UPSTREAM) OXYGEN SENSOR: If a vehicle listed above arrives with engine malfunction indicator (Check Engine) warning light on, performing a Vehicle Test.
B321119	2021-02-01. Service bulletin. ?SPORADIC REDUCTION OF STEERING ASSISTANCE: The driver notices a reduction of steering assistance sporadically while in certain driving situations. Steering control is never lost when the reduction of assistance occurs.