# Service bulletin B640921

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.

- Type: Service bulletin
- NHTSA id: 10225122
- Published by NHTSA: 2022\-10\-31
- Manufacturer's number: B640921
- Manufacturer's date: 2022\-09\-01
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

## NHTSA's 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 \(EKMV\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225122-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225122-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine

## Vehicles listed

- 2020 BMW 330E
- 2021 to 2023 BMW 330E
- 2020 to 2022 BMW 330I
- 2020 to 2023 BMW M340I
- 2020 to 2023 BMW X5

## Recalls for the same vehicles and component

- [2026331](/recalls/tc/2026331.md), 2026-07-08: Engine
- [2026040](/recalls/tc/2026040.md), 2026-01-30: Engine
- [26V056000](/recalls/nhtsa/26V056000.md), 2026-01-30: ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [2025514](/recalls/tc/2025514.md), 2025-09-25: Engine
- [25V644000](/recalls/nhtsa/25V644000.md), 2025-09-25: ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [2025499](/recalls/tc/2025499.md), 2025-09-23: Electrical
- [25V636000](/recalls/nhtsa/25V636000.md), 2025-09-23: ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
- [2024444](/recalls/tc/2024444.md), 2024-08-01: Electrical
- [24V576000](/recalls/nhtsa/24V576000.md), 2024-08-01: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [23V584000](/recalls/nhtsa/23V584000.md), 2023-08-16: ELECTRICAL SYSTEM:SOFTWARE; SEAT BELTS

## Other bulletins for the same vehicles and component

- [B110723](/bulletins/11036377.md), 2026-08-26, Emissions: ENGINE. The return springs on the exhaust camshaft followers \(switchable rocker arm\) may break.
- [B110426](/bulletins/11035500.md), 2026-08-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
- [B011524](/bulletins/11035499.md), 2026-08-03, Warranty extension: ENGINE. The NVLD modules limited warranty for defects in materials and/or workmanship has been extended to 15 years / 150,000 miles as determined from the vehicles original in\-service / first delivery date.
- [B010324](/bulletins/11035497.md), 2026-08-03, Warranty extension: ENGINE. 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.
- [B840226](/bulletins/11035408.md), 2026-07-31, Service campaign: ELECTRICAL SYSTEM. Once the Telematics Module \(TCB2\) enters sleep mode, a BMW Data Services trigger for Remote Services\(remote engine start, lock/unlock/climate conditioning\) will not be able to reactivate the TCB2. Due to this issue, Remote Services will not function in the vehicle when parked and locked.
- [B120326](/bulletins/11035396.md), 2026-07-31, Emissions: ENGINE. Due to an implementation error in various OBD diagnostics in the vehicle's control units, in very rare cases itmay happen that stored fault memory codes \(DTCs\) and the MIL \(warning light\) are not automaticallydeleted even though the underlying malfunction has already been rectified. This does not comply with the statutory OBD specifications.
- [B120626](/bulletins/11034450.md), 2026-07-03, Service campaign: ELECTRICAL SYSTEM. In these vehicles with an S68 engine, an incorrect diagnosis of the Valvetronic \(VVT\) may occur. Undercertain operating conditions, the software may detect a short\-circuit in the valve control system even thoughthere is no fault. When the above\-mentioned fault occurs, the red Check Control warning light ‘Drive system fault’ illuminates.This can result in the intake valves closing gradually, which may lead to misfires while the engine is running.
- [B120626](/bulletins/11033035.md), 2026-06-01, Service campaign: ENGINE. DELIVERY STOP: VARIABLE VALVE TIMING
- [B652025](/bulletins/11032744.md), 2026-05-18, Service bulletin: ELECTRICAL SYSTEM. After replacing the Multifunctional Display \(MFD\), the Central Information Display \(CID\) is black. The backlight of the CID is illuminated, and touch function does register an audible sound.
- [B010324](/bulletins/11032731.md), 2026-05-18, Warranty extension: ENGINE. 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.

JSON: [/v1/bulletins/10225122](/v1/bulletins/10225122)

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