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Service bulletin B341019

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 id10170577
Published by NHTSA2020-01-21
Manufacturer's numberB341019
Manufacturer's date2019-12-01
NHTSA componentSERVICE BRAKES

NHTSA's summary

HELPFUL INFORMATION FOR CUSTOMER DISCUSSIONS REGARDING MOTORSPORT VEHICLE BRAKES: Note for customer deleted: If the noise does not disappear despite the attempts to regenerate the brake a repair is required.

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

Brakes

Vehicles listed
BMW M22016, 2017, 2018, 2019, 2020
BMW M32015, 2016, 2017, 2018
BMW M42015, 2016, 2017, 2018, 2019, 2020
BMW M52013, 2014, 2015, 2016
BMW M52018, 2019, 2020
BMW M62013, 2014, 2015, 2016, 2017, 2018
BMW M82020
BMW M8 GRAN COUPE2020
BMW X32020
BMW X42020
BMW X52015, 2016, 2017
BMW X52020
BMW X5 M2018
BMW X62020
BMW X6 M2015 to 2019

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

Recalls for the same vehicles and component
20214792021-08-03. Brakes
20210612021-02-10. Brakes
21V0620002021-02-10. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC; SERVICE BRAKES, HYDRAULIC

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
B0647252025-10-10. Other. Protection Plate Return
B6617192025-05-02. Service bulletin. The vehicle applies the brakes on its own when reversing onto an inclined roadway or driveway. This appliesonly to the situation where the Active PDC option is activated via the iDrive.
B3409212025-01-23. Service bulletin. A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed.
B3407142023-11-01. Service bulletin. Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-
B3402232023-06-26. Service bulletin. Brake squeak may occur with cold brakes and driving slowly or reversing
SIB5106232023-05-15. Service bulletin. The hazard light (aka emergency flasher) button gets stuck in the ON or OFF position when actuated.
B3409212023-03-20. Service bulletin. A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed.
SIB1702202022-10-17. Service bulletin. Symptom 1: There are traces of coolant leaking under the vehicle, or there is significant pressure released along with coolant loss when opening the low temperature cooling system reservoir (engine cold). The following fault code may also be stored in the DME: 20A201 - Charge air cooling system: Coolant pump protective function activated due to dry running Symptom 2*: The air conditioning may have low cooling output with the following fault stored in the IHKA: 80120A - Compressor: Shut down due to overpressure in refrigerant system. Symptom 2 is an additional symptom related to Symptom 1. Diagnose the IHKA fault with ISTA test plans if it is the only fault stored (if no DME faults are stored related to coolant loss, this bulletin repair does not apply).
SIM0106172022-07-05. Service bulletin. Visual Inspection of Brake discs/Rotors for new car deliveries
B3301202022-05-31. Service bulletin. There is a shudder or jerking feeling coming from the rear of the vehicle at low speeds and low engine loads while turning. Incorrect actuating pressure in the M-differential clutch plates.