WenmarOpen by Wenmar Pro

Service bulletin B640321

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 id10200243
Published by NHTSA2021-08-09
Manufacturer's numberB640321
Manufacturer's date2021-06-01
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; STRUCTURE:INTERIOR PANELS:DASHBOARD

NHTSA's summary

After replacing the microfilter during a previous service, the customer notices that the ventilation system airflow rate is noticeably less. This leads to perceived lower cooling power. The customer may also notice that external odors enter the vehicle.

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

Body and frame, Equipment and accessories

Vehicles listed
BMW 330E2021
BMW 330I2019, 2020, 2021
BMW M340I2020, 2021
BMW X32018, 2019, 2020, 2021
BMW X42019, 2020, 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
20246092024-10-15. Structure
24V7640002024-10-15. STRUCTURE
20244102024-07-17. Structure
24V5340002024-07-17. STRUCTURE
19V7550002019-10-23. STRUCTURE:BODY:TRUNK LID
20181172018-03-07. Structure
18V1540002018-03-07. STRUCTURE:BODY

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
B010226DCS2026-08-28. Other. BMW Notice of the Court’s Final Approval for Shark-Fin Antenna Settlement (X3, X4, X5, X6, X7)
B0102262026-08-27. Service bulletin. Rear Roof Antenna Shark Fin Cover Sealing Issue
B0102262026-06-01. Warranty extension. SHARK FIN ROOF ANTENNA SEALING SETTLEMENT Extended Warranty
B0103252026-03-13. Warranty extension. The Radiator Grilles Lower Active Air Flap Assembly 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.
B4107252025-08-24. Service bulletin. While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area (highlighted in orange) on either the right or left side.
B5112232025-07-28. Warranty extension. After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front bottom active air flap is obstructed or blocked.
B0108252025-05-31. Warranty extension. A vehicle listed above may arrive with a Check Control Message (CCM), and/or malfunction indicator lamp(MIL) illuminated. After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front bottomactive air flap is obstructed or blocked. Thoroughly inspect the front bottom air flap, when applicable, remove any contamination that is found caught inand between the bottom air flaps (aka “blinds”) and/or the housing.
B5130192025-05-02. Service bulletin. A groaning noise is present from the door frame of any door, most commonly when driving over rough roadsor during body flex. This situation may be worse in vehicles which are regularly waxed in th e area of the door jamb.
B0103252025-04-18. Warranty extension. The Radiator Grilles Lower Active Air Flap Assembly 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.
B0107252025-04-18. Warranty extension. The Radiator Grilles Lower Active Air Flap Assembly 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.