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Service bulletin B121716

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 id10146710
Published by NHTSA2018-11-05
Manufacturer's numberB121716
Manufacturer's date2017-06-01
NHTSA componentPOWER TRAIN

NHTSA's summary

M2 - DRIVETRAIN MALFUNCTION CCM IS DISPLAYED. Drivetrain Malfunction Check Control Message is displayed Engine power is reduced Faults stored in DME fault memory: o 0x120208 - Charging pressure control plausibility: pressure too high o 0x120408 - Charging pressure control: Switching off Turbocharging pressure control is erroneously switched off due to an overly sensitive diagnostic threshold in the 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

Transmission and driveline

Vehicles listed
BMW M22016, 2017

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
B3409212021-11-08. Service bulletin. A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operationwhen braking from low speed.
B3303182019-02-25. Service bulletin. KNOCKING NOISE OR VIBRATION/DRONING NOISE FROM THE REAR AXLE. A hard knocking noise is heard from the rear axle area during load reversals. The tuning of the rear suspension mount for the differential.
BMWAUG06162018-11-05. Service bulletin. The delivery stop has been lifted for certain affected M vehicles produced from May 12, 2016 through July 4, 2016. While the delivery stop has been lifted, customers must sign a disclosure prior to delivery acknowledging the premature wearing of the rear axle differential. A copy of the disclosure form is attached and must be maintained in the customer?s deal jacket. Body of Disclosure:In the course of ongoing quality analysis, BMW has discovered that the disc in the rear-axle differential in the vehicle reference above wears out prematurely, causing loud noises. The remedy parts for the repair are not yet available. BMW of North America (?BMW NA?) will notify you when parts are available and advise you to schedule an appointment with your local BMW dealer to have the repair performed free of charge to you. To ensure that we have your most up-to-date contact information, please complete the information below. If you change your address before you receive the notice from BMW NA, please register your vehicle and update your contact information at http://www.bmwusa.com/myBMW.
BMWAUG05162018-11-05. Service bulletin. The delivery stop has been lifted for certain affected M vehicles produced from May 12, 2016 through July 4, 2016. While the delivery stop has been lifted, customers must sign a disclosure prior to delivery acknowledging the premature wearing of the rear axle differential. A copy of the disclosure form is attached and must be maintained in the customer?s deal jacket. Body of Disclosure:In the course of ongoing quality analysis, BMW has discovered that the disc in the rear-axle differential in the vehicle reference above wears out prematurely, causing loud noises. The remedy parts for the repair are not yet available. BMW of North America (?BMW NA?) will notify you when parts are available and advise you to schedule an appointment with your local BMW dealer to have the repair performed free of charge to you. To ensure that we have your most up-to-date contact information, please complete the information below. If you change your address before you receive the notice from BMW NA, please register your vehicle and update your contact information at http://www.bmwusa.com/myBMW.
B3304162018-11-05. Service bulletin. "SERVICE ACTION: REPLACE REAR-AXLE DIFFERENTIAL This Service Information bulletin supersedes SI 33 04 16 dated August 2016 The vehicle delivery stop has been lifted.. The rear differential emits a loud noise. Manufacturing defect in the rear differential limited slip clutch pack. This may cause, in certain driving situations, excessive noise from the rear differential. AFFECTED VEHICLES This Service Action involves certain M2 Coupe, M3 Sedan, M4 Coupe and Convertible, M5 and M6 (Gran Coupe, Convertible, and Coupe) produced from May 12, 2016 through July 4, 2016. Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in AIR, the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader. You may receive some vehicles from the ports affected by this campaign that show the campaign as still open."
B3304162018-11-05. Service bulletin. "SERVICE ACTION: REPLACE REAR-AXLE DIFFERENTIAL This Service Information bulletin supersedes SI 33 04 16 dated August 2016 The vehicle delivery stop has been lifted.. The rear differential emits a loud noise. Manufacturing defect in the rear differential limited slip clutch pack. This may cause, in certain driving situations, excessive noise from the rear differential. AFFECTED VEHICLES This Service Action involves certain M2 Coupe, M3 Sedan, M4 Coupe and Convertible, M5 and M6 (Gran Coupe, Convertible, and Coupe) produced from May 12, 2016 through July 4, 2016. Vehicles which require this Service Action to be completed will show it as ""Open"" when checked either in AIR, the ""Service Menu"" of DCSnet (Dealer Communication System) or with the Key Reader. You may receive some vehicles from the ports affected by this campaign that show the campaign as still open."
B3103182018-10-09. Service bulletin. CRACKING NOISE FROM FRONT OF VEHICLE WHILE TURNING OR PARKING: Cracking noises heard from the area of the front axle when rotating the steering while stationary or at low speed.
B3101122018-07-16. Service bulletin. CRACKING NOISES FROM THE FRONT AXLE AREA WHILE TURNING THE WHEELS, WHEN STATIONARY OR PARKING: Cracking noises are heard from the front axle area while maneuvering at low speeds (e.g., parking lot maneuvers) or when turning the steering wheel while stationary.