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Service bulletin B120618

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)
TypeService bulletin
NHTSA id10135025
Published by NHTSA2018-04-23
Manufacturer's numberB120618
Manufacturer's date2018-02-01
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

DME FAULT CODE CDC203: Various control units contain faults indicating missing messages from the battery management electronics

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, 12-volt battery

Vehicles listed
BMW 1 SERIES M2013
BMW 320I2013, 2014, 2015, 2016, 2017
BMW 328D2014, 2015, 2016, 2017
BMW 328I2012, 2013, 2014, 2015, 2016
BMW 330E2017
BMW 330I2017
BMW 335I2012, 2013, 2014, 2015
BMW 340I2016, 2017
BMW 530I2017
BMW 540I2017
BMW 740LI2016 to 2018
BMW 750LI2016 to 2018
BMW F800 R2016, 2017
BMW M760LI2017 to 2018
BMW R1200 R2015
BMW R1200 R2017, 2018
BMW S1000 R2018
BMW X52014, 2015, 2016, 2017
BMW X5 M2018

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

Other bulletins for the same vehicles and component
B6124202021-08-09. Service bulletin. Some of the vehicles listed above which were initially identified as requiring Recall Campaign 20V-601 - HIGH VOLTAGE BATTERY to be performed and completed are now no longer included in this Recall.
B6127202021-02-22. Service bulletin. CHECKING THE JUMP START POINT COVER AND REWORKING IF NECESSARY: It is possible that the jump start terminal point cover was not installed, or not properly installed on the affected vehicles.
B6101212021-02-22. Service bulletin. BATTERY DOES NOT CHARGE WITH EXTERNAL CHARGER AND CLOSED HOOD: After the vehicle has been charged using a 12 V charger with the hood closed during a long stationary period, the 48 V battery may be totally discharged, and possible replacement is needed.
B6514192019-10-21. Service bulletin. HEAD UNIT NBT EVO (HU-H2) PROGRAMMING ABORT: The CID screen may light up blue. When this occurs A battery reset is not successful in restoring head unit operation Software error in the Bootloader file (BTLD) of the head unit.
B6106192019-06-24. Service bulletin. HIGH VOLTAGE DIAGNOSTIC SPECIALIST TRAINING AND EQUIPMENT STRATEGY. INFORMATION The ST1821 High Voltage Diagnostic Specialist Certification (HVS) is the next step in the E-mobility service strategy for BMW technicians.
B6104192019-05-20. Service bulletin. VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED This Service Information bulletin replaces SI B61 04 19 dated March 2019.
B6104192019-05-20. Service bulletin. VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED This Service Information bulletin replaces SI B61 04 19 dated March 2019.
MC646068142019-04-22. Service bulletin. Which charger should be used to charge the Li-ion HP and/or M batteries.
B6104192019-04-22. Service bulletin. THE VEHICLE DOES NOT START BATTERY TOTALLY DISCHARGED. The customer's vehicle does not start due to a totally discharged battery.
B6130142018-12-10. Service bulletin. "BMW Maintenance Program: 12-Volt Battery Replacement Measure. INFORMATION This bulletin outlines a customer satisfaction measure that has been designed exclusively for the BMW vehicles listed above. It involves the replacement of the 12-volt battery as a preventive maintenance measure. This 12-volt battery replacement measure is: Effective for repairs dated on or after January 1, 2015. Applicable to vehicles that are still covered by the BMW Maintenance Program. This program is valid for 4 years or 50,000 miles, whichever occurs first. The calculation is based on the current date of repair. It is ""applicable"" when the 12volt battery was not replaced within the last 12 months. You can then perform the battery replacement as outlined below. Please check the warranty claim history for the specific vehicle in the DCSnet Warranty Vehicle Inquiry to confirm the battery was not already replaced within the previous 12 months."