Technical Service Bulletin B640921 — 2021 BMW M340I
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | B640921 |
| Manufacturer | |
| Vehicle | 2021 BMW M340I |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
On these Plug-in Hybrid Electric Vehicles (PHEV), the air conditioning cycles from cold to warm air while driving or while at a standstill. A rattling noise may also be heard coming from the electrical coolant condenser (EKMV).
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2021 BMW M340I
B640521
STRUCTURE
B340122
POWER TRAIN:AUTOMATIC TRANSMISSION
B640321
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
B340621
ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
B340621
ELECTRICAL SYSTEM:SOFTWARE
B611120
STRUCTURE:BODY:DOOR
B540220
STRUCTURE:BODY:ROOF AND PILLARS
B612420
EQUIPMENT
B310120
EQUIPMENT ADAPTIVE/MOBILITY
B512520
STRUCTURE