# Service bulletin B640422

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: 10225121
- Published by NHTSA: 2022\-10\-31
- Manufacturer's number: B640422
- Manufacturer's date: 2022\-09\-01
- NHTSA component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## NHTSA's summary

An interference noise \(groaning noise\) can be heard from within the heating and air\-conditioning unit in the center of the instrument panel.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225121-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10225121-9999.pdf)

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

## Components

Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2020 BMW 330E
- 2021 to 2023 BMW 330E
- 2020 to 2022 BMW 330I
- 2020 to 2023 BMW 430I
- 2022 to 2023 BMW I4
- 2021 to 2022 BMW M3
- 2020 to 2023 BMW M340I
- 2020 to 2022 BMW M4
- 2021 to 2023 BMW M440I
- 2020 to 2022 BMW X3
- 2020 to 2022 BMW X4
- 2020 to 2022 BMW Z4

## Recalls for the same vehicles and component

- [23V099000](/recalls/nhtsa/23V099000.md), 2023-02-17: ELECTRICAL SYSTEM:SOFTWARE; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
- [22V267000](/recalls/nhtsa/22V267000.md), 2022-04-20: VISIBILITY:SUN/MOON ROOF ASSEMBLY
- [2021078](/recalls/tc/2021078.md), 2021-02-18: Visual System
- [2019480](/recalls/tc/2019480.md), 2019-10-01: Visual System

## Other bulletins for the same vehicles and component

- [B630418](/bulletins/11020927.md), 2025-07-28, Service bulletin: VISIBILITY/WIPER. One or more of the LED daytime running lights are dim or discolored.
- [B630222](/bulletins/11017571.md), 2025-05-02, Service bulletin: VISIBILITY/WIPER. Excessive condensation in one or both headlights.
- [B640422](/bulletins/10250374.md), 2024-03-02, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. An interference noise \(groaning noise\) can be heard from within the heating and air\-conditioning unit in thecenter of the instrument panel. The groaning noise always occurs when either a ventilation flap, air stratification flap or the recirculated airflap moves to a different position. Due to the complex design of the heating and air\-conditioning unit, the kinematics causing it \(top or bottom,left or right\) may not be able to be precisely located. Depending on the vehicle model, the number of servomotors \(and the associated kinematics unit\) varies.Various models use either 2 or 3 servomotors.
- [B510819](/bulletins/10249437.md), 2024-02-01, Service bulletin: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM. The basic conditions for initializing the power windows are not met.
- [B540421](/bulletins/10244239.md), 2023-11-01, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE. This situation can result in two customer complaints: 1. Wind noise 2. Excess water entry
- [B610220](/bulletins/10242699.md), 2023-09-25, Service bulletin: VISIBILITY:WINDSHIELD; VISIBILITY:WINDSHIELD WIPER/WASHER; STRUCTURE. ?When driving over uneven pavement or cobblestones, a knocking noise is present from the passenger side front area \(A pillar\). Once the vehicle is driven on a flat, even surface; the noise is no longer present.
- [B540123](/bulletins/10242696.md), 2023-09-25, Service bulletin: STRUCTURE; VISIBILITY:SUN/MOON ROOF ASSEMBLY. ?Water leaking into the vehicle from the headliner/microphone area.
- [B511722](/bulletins/10238080.md), 2023-06-26, Service bulletin: VISIBILITY:REARVIEW MIRRORS/DEVICES; ELECTRICAL SYSTEM. Due to the semiconductor supply, the Local Interconnect Network module in either of the exterior mirrors was switched to another controller. That one provides an imprecise voltage measurement, which the main controller interprets as a fault.
- [B510923](/bulletins/10238078.md), 2023-06-26, Service bulletin: VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. Sudden failure of the power window\(s\).
- [B510823](/bulletins/10238077.md), 2023-06-26, Service bulletin: VISIBILITY. Upon opening or closing \(i.e., folding in or out\) the exterior mirror assembly, a creaking sound is heard from either the driver and/or passenger side.

JSON: [/v1/bulletins/10225121](/v1/bulletins/10225121)

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