# Service bulletin B540819

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: 10170581
- Published by NHTSA: 2020\-01\-21
- Manufacturer's number: B540819
- Manufacturer's date: 2019\-12\-01
- NHTSA component: VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY

## NHTSA's summary

SUNROOF REVERSES WHEN CLOSING: The sunroof reverses direction \(anti\-traps\) just as the sunroof glass meets the wind deflector. The sunroof may not properly initialize as a result.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10170581-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10170581-9999.pdf)

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

## Components

Glass, wipers and mirrors, Sunroof

## Vehicles listed

- 2019 to 2020 BMW 330I
- 2018 to 2019 BMW 640I
- 2020 BMW 640I
- 2020 BMW M340I

## Other bulletins for the same vehicles and component

- [B541519](/bulletins/10170583.md), 2020-01-21, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY; VISIBILITY; STRUCTURE. GROANING NOISE FROM SUNROOF: A groaning noise is present from the sunroof glass panel while driving over rough road surfaces or during body flex. The noise may also be present while the sunroof is opening into the vented position. Interference between the sunroof glass panel perimeter seal and the vehicle roof.
- [B540619](/bulletins/10165260.md), 2019-09-23, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY. SUNROOF REVERSES WHEN CLOSING FROM TILT POSITION. The sunroof may reverse \(anti\-trap activates\) when attempting to close from the vented position. This may only occur at high temperatures despite no obstruction being present. Sensitive anti\-trap parameters.
- [B540718](/bulletins/10154854.md), 2019-03-18, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY. PANORAMIC SUNROOF DOES NOT OPEN OR CLOSE. The panoramic sunroof will not open or close. The sunroof may only tilt with no other functions available. There are no faults stored for the panoramic sunroof. A software error in the Roof Function Center \(FZD\).
- [B540718](/bulletins/10153641.md), 2019-02-25, Service bulletin: VISIBILITY:SUN/MOON ROOF ASSEMBLY. PANORAMIC SUNROOF DOES NOT OPEN OR CLOSE. The panoramic sunroof will not open or close. The sunroof may only tilt with no other functions available. There are no faults stored for the panoramic sunroof. A software error in the Roof Function Center \(FZD\).

JSON: [/v1/bulletins/10170581](/v1/bulletins/10170581)

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