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Service bulletin B640521

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 id10200245
Published by NHTSA2021-08-09
Manufacturer's numberB640521
Manufacturer's date2021-06-01
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS; ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

A rattling noise is heard in the vehicle interior when the air conditioning is activated.

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, Equipment and accessories, Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
BMW 330E2021
BMW 330I2019, 2020, 2021
BMW M340I2020, 2021

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

Recalls for the same vehicles and component
20260402026-01-30. Engine
20255142025-09-25. Engine
24V5760002024-08-01. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
21V5980002021-08-02. ENGINE
20210782021-02-18. Visual System
19V7320002019-10-15. ENGINE
20194802019-10-01. Visual System

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
B0102242026-08-03. Warranty extension. The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
B0103242026-05-18. Warranty extension. The EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date.
B0630252025-05-02. Other. Coolant Pump Return
B0625252025-04-04. Other. Bearing Shell Return
B1105212024-12-31. Service campaign. The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off thecoolant pump and alternator.
B0103242024-09-29. Warranty extension. For this vehicle, the EVAP systems purge (vent) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in-service date. This coverage is subject to the same vehicle eligibility requirements, limitations, and exclusion criteria that apply to the BMW New Vehicle Limited Warranty.
B0103242024-05-31. Warranty extension. EVAP SYSTEM PURGE (VENT) VALVE EXT LTD WTY (ELW) 15/150
B1207212024-04-01. Service bulletin. Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter alternator / belt for 48V system (OSA_RIEMEN_RISS): Belt betweenCombustion engine and starter generator torn And/or one or more of the following other issues are also occurring: Noise in the area of the belt drive. Odor from the engine compartment. Smoke formation in the area of the belt drive. Drive belt damaged or prematurely worn. Torn drive belt.
B6607202024-03-02. Service bulletin. The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B6608202024-03-02. Service bulletin. The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance"- Check Control Message.