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Service bulletins for the 2020 BMW M340i

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.

251 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Brakes are shown. Show all

Bulletins, newest first
B3407142023-11-01. Service bulletin. SERVICE BRAKES, HYDRAULIC. Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-
B3601222022-05-16. Service bulletin. SERVICE BRAKES, HYDRAULIC; WHEELS; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. After replacing tires and successfully programming the Tire Pressure Monitoring System (TPMS) using the RDC tool to transfer the QR code information on the sidewall, the "back-end" support systems need time to update the new tire information.
SIB3408212021-12-13. Service bulletin. SERVICE BRAKES, HYDRAULIC. The yellow CCM, ID code 42, lights up when starting the vehicle. ID code 00042: Brake system. It is possible to continue driving. Additional notes: Avoid abrupt braking as far as possible. Drive at a moderate speed. Have it checked by your nearest Service Center.
B3410202020-11-23. Service bulletin. SERVICE BRAKES. TICKING NOISE FROM DRIVERS FOOTWELL DURING LIGHT BRAKING WHILE COASTING: A ticking sound can be heard from the drivers footwell while coasting with the engine OFF. The noise occurs when the pedal is slightly pressed with minimum force without the brake light being activated.
B3410202020-11-16. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES; ENGINE. TICKING NOISE FROM DRIVERS FOOTWELL DURING LIGHT BRAKING WHILE COASTING: A ticking sound can be heard from the drivers footwell while coasting with the engine OFF. The noise occurs when the pedal is slightly pressed with minimum force without the brake light being activated.
B3405172020-08-31. Service bulletin. SERVICE BRAKES, HYDRAULIC; WHEELS. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: Ticking noise coming from front wheel while cornering without brakes applied, noticeable at low speeds. The vehicle must be moving.
B3403202020-07-27. Service bulletin. ENGINE AND ENGINE COOLING; SERVICE BRAKES, HYDRAULIC. PREMATURE WEAR OF THE REAR AXLE BRAKE PADS WITH STANDARD BRAKES: The CBS data and Check Control (CC) message shows the rear axle brake pads are worn, and the vehicle has less than 15,500 miles. Increased residual braking forces in the rear axle brake calipers caused by production-related deviations on the surface of the piston ring seal.
B3405172020-04-20. Service bulletin. BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC; WHEELS; POWER TRAIN. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: This Service Information Bulletin (Revision 3) replaces SI B34 05 17 dated September 2017. Ticking noise coming from front wheel while cornering without brakes applied noticeable at low speeds. The vehicle must be moving. See attached video V34 01 20 Note: For a similar noise heard when parking with the brakes applied refer to SIB 31 01 12. Microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs.
B6210192020-01-21. Service bulletin. SERVICE BRAKES. INCORRECT CONDITION BASED SERVICE DATA FOR BRAKE FLUID SERVICE. "Brake fluid service due since 12/2001" is displayed in the instrument cluster although the vehicle is only a maximum of 1 year old. Software error in the KOMBI (Instrument Cluster).

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.