Service bulletin B121016

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	10151254
Published by NHTSA	2018-12-10
Manufacturer's number	B121016
Manufacturer's date	2016-04-01
NHTSA component	ENGINE AND ENGINE COOLING

NHTSA's summary

"N63T Drivetrain Malfunction Message after Driving for Several Hours. F01, F02, F07 Target integration level: F001-16-07-501 or higher ""Drivetrain Malfunction"" message displayed with reduced engine power. Erroneous misfire faults may be stored for cylinders 3 and 6. The situation is most likely to occur after driving for several hours at constant highway speeds with light throttle (low load and low engine speed). Cycling ignition off and back on again clears the ""Drivetrain Malfunction"" warning DME software (plausibility check error)"

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

Engine

Vehicles listed
BMW 525D XDRIVE	2014
BMW 550I	2013, 2014
BMW 550I GRAN TURISMO	2010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
BMW 650I	2012, 2013, 2014
BMW 750I	2009, 2010, 2011, 2012, 2013, 2014
BMW 750LI	2009, 2010, 2011, 2012, 2013, 2014

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

Recalls for the same vehicles and component
18V248000	2018-04-18. ENGINE AND ENGINE COOLING:ENGINE; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

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
B010122	2026-02-02. Service bulletin. N63TU1 CLASS ACTION SETTLEMENT SVC CAMPAIGN: OIL CONSUMPTION DIAGNOSIS/REPAIR
B065924	2024-09-02. Other. Radiator Return
B160623	2024-01-03. Service bulletin. Engine will crank but not start. There is no communication with the integrated fuel module (TFE) whendiagnosing with ISTA. The following two fault codes will be stored in the DME: 032B43 - Low fuel pressure system, electric fuel pump: pressure value too low CDA594 - Message (- 0x33E) missing, receiver DME, transmitter TFE
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.
SIM010717	2022-07-05. Service bulletin. The engine?s intake charge-air duct limited warranty extension to 10 years/120,000 miles applies to ?eligible USspecification
B111614	2022-05-16. Service bulletin. This bulletin outlines the procedure for checking the engine timing chains for wear, and should be completed in conjunction with SI B11 06 14, "N63 Customer Care Package." The N63CCP and N63 Engine Check the Timing Chain are NOT mandatory Technical Campaigns or Recalls. They should be completed only based on parts availability, workshop capacity, and the customer's schedule.
B012218	2020-08-31. Service bulletin. N63 CLASS ACTION SETTLEMENT - BATTERY SERVICE BENEFIT - RETROFITS/ REPLACEMENTS: This Service Information bulletin applies to: Class vehicles in operation on the road (Applicable N63 engine model vehicles); by Class members (Class Vehicle owners on the date this settlement became effective), And it provides diagnostic/repairs instructions, as well as, Warranty Information for performed remedies.
B010518	2020-03-16. Service bulletin. LIMITED WARRANTY EXTENSIONTO 10 YEARS/120000 MILES: This Service Information Bulletin replaces SI B01 05 18 dated July 2019. Engine starts poorly (hard starting) rough idle and misfires. The Service Engine Soon (MIL) lamp is on.
B012918	2019-11-18. Service bulletin. N63 ENGINE VEHICLES: CLASS ACTION SETTLEMENT FOR ENGINE OILCONSUMPTION/BATTER. What's New: The short-term extension window of one (1) year/12,000 miles from date of the settlement has expired.
B012118	2019-11-18. Service bulletin. N63: OIL CONSUMPTION CLASS ACTION SETTLEMENT DIAGNOSIS/REPAIRS (VERSION 12.0). What's New: Engine Timing Chain Guide Pre-Inspection (with Valve Stem Seal Repair) instruction added Updated N63 Replacement Engine Assembly/Part statement added Warranty Information section updated, including the current coverage and attachments.