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Service bulletin B540417

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 id10175280
Published by NHTSA2020-05-18
Manufacturer's numberB540417
Manufacturer's date2020-04-01
NHTSA componentVISIBILITY; STRUCTURE

NHTSA's summary

CREAKING OR RATTLING NOISE FROM SUNROOF AREA: Creaking and/or rattling noise from the sunroof area especially when driving on uneven road surfaces. This can already take place as of low speeds. Incorrect torque applied to the mounting screws during production allowing flexing/movement around the sunroof cassette/glass unit. And/or Improperly installed (loose) threaded bushings in the roof panel.

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, Glass, wipers and mirrors

Vehicles listed
BMW 740E2017, 2018, 2019
BMW 740I2017, 2018, 2019, 2020
BMW 740LI2016 to 2017
BMW 745E2020
BMW 750I2018, 2019
BMW 750LI2016 to 2019
BMW B7 ALPINA2018 to 2020
BMW M760I2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
InVeh-InApp-Comm2026-02-25. Over-the-air update. It was found that a radio IHKA control panel without a CD slide compartment has been installed due to a logistics error in production. A CD cannot be inserted and the radio IHKA control panel should therefore be replaced.
B6304182025-07-28. Service bulletin. One or more of the LED daytime running lights are dim or discolored.
B6603252025-04-03. Service bulletin. A check control message is displayed, indicating that the parking assistance systems have limitedfunctionality due to errors detected within PDC sensors. The warning indicates parking assistance featureshave limited functionality while the errors continue to be detected. Following faults may be stored 8031BA Ultrasonic Sensor Rear Side Left Software Error 8031CO Ultrasonic Sensor Rear outer left Software Error 8031AE Ultrasonic Sensor Rear Outer Right Software Error 8031A8 Ultrasonic Sensor Rear Side Right Software Error 8031B4 Ultrasonic Sensor Rear Middle Right Software Error 8031C6 Ultrasonic Sensor Rear Middle Left Software Error 8031CD Ultrasonic Sensor Voltage Supply Sensors Back: Short Circuit 8031CC Ultrasonic Sensor Voltage Supply Front: Short Circuit 8031CA Ultrasonic Sensors Front Extraneous Noise
B5108192024-02-01. Service bulletin. The basic conditions for initializing the power windows are not met.
B6128232023-12-06. Service bulletin. A thumping sound is heard when the window reaches the closing end stop.
B5405212023-09-25. Service bulletin. ?The sunroof will not operate in either direction.
B6408212023-07-24. Service bulletin. The air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38 F to 60 F +) without changing any climate control settings.
B5146162023-06-26. Service bulletin. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
SIB5102232023-05-22. Service bulletin. POPPING SOUND AT THE TOP OF THE C-PILLAR
B2402222023-01-30. Service bulletin. A cracking, metallic noise from under the center of the vehicle.