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Service bulletin 121514

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 id10148217
Published by NHTSA2018-11-13
Manufacturer's number121514
Manufacturer's date2014-08-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE; ENGINE

NHTSA's summary

N55 with Double-Clutch Transmission: Idle Fluctuates when Stopped. A customer may complain that after coming to a stop, the engine speed intermittently fluctuates from about 500 RPM to 1,100 RPM. This situation can be more noticeable when the air conditioner is on. Unfavorable DME software.

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, Engine, Transmission and driveline, Automatic transmission, Software

Vehicles listed
BMW 135I2011, 2012, 2013
BMW 135I US2011 (the catalog's model; the bulletin names a series or trim of it)

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
8403132018-11-26. Service bulletin. "Roadside Assistance and BMW Online Services Inoperative After Programming. Roadside Assistance and BMW Online services are inoperative after programming the vehicle with ISTA/P 2.48 or higher. The symptoms are as follows: * BMW Online - No network available when selected * Roadside Assistance - When selected, a message stating "Service not enabled or contract expired" is displayed. Also, "Start service" is grayed out and cannot be selected. CAUSE Software error in the CIC (Car Information Computer)"
8404122018-11-13. Service bulletin. iPhone 6, 6 Plus, 5, 5S, 5C, 4S, 4, and 3GS with iOS 8.x Information. INFORMATION There is one major difference in functionality since iOS 8.0 was released. Scenario: z The customer leaves the vehicle and turns his or her phone off. z He or she turns the phone back on. z He or she enters the vehicle, but does not unlock the phone and start driving. Result: z The phone reconnects to the Bluetooth system (normal). z However, it does not transfer the contact list (not normal). z The contact list in the iDrive will be empty. z The call list in the Kombi will display only phone numbers, but no names. z The hands-free system works for accepting calls and conversing on calls started on the phone. Solution: z Prior to the customer entering the vehicle they must unlock the phone (passkey) With the release of Apple's new iPhone 6, 6 Plus and iOS 8.x software, there have been many questions regarding the new phone and software. The information in the attachment to this Service Information will help answer these questions. A printed copy can be given to the customer if needed. The attachment provides information on the differences between the new iPhone 6, 6 Plus and the previous versions, along with Apple software improvements in the following areas: 1. Visual comparison 2. Connectivity 3. Functionality Refer to the PDF file in the "Attachment" section of this bulletin for complete details. Information on the iPhone 6 is also available via the following: z www.bmwusa.com/bluetooth website NOTE: This SI will be updated as new information is received.
8402142018-11-13. Service bulletin. ConnectedDrive/BMW Assist System Diagnosis Information. ConnectedDrive/BMW Assist features are partially or completely inoperative. This Service Information bulletin is being published because vehicles are down for an extended period of time when researching system failures with ConnectedDrive or BMW Assist. This Service Information bulletin will assist you both in identifying the issue and providing technical support. CAUSE Not enough information is available for BMW NA engineers to assist the technician in diagnosing the root cause.
B6115152018-11-05. Service bulletin. CAS Module Fails Programming with CoAPI Error 2082. During vehicle programming, the CAS (Car Access System) module fails to program with CoAPI error 2082 displayed. Refer to the attachment, which lists the affected CAS serial numbers. The following part numbers are affected: 61 35 9 287 534 61 35 9 226 238 61 35 9 227 053 61 35 9 287 535
SIB-12-01-112011-08-10. Service bulletin. BMW: THE SERVICE ENGINE SOON LIGHT IS ON WHILE DRIVING. THIS IS A PROGRAMMING ISSUE. *RM UPDATED 1/4/12. *PE UPDATED 4/24/12. *PE