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Service bulletin B540320

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 id10186220
Published by NHTSA2021-02-01
Manufacturer's numberB540320
Manufacturer's date2020-12-01
NHTSA componentEQUIPMENT; VISIBILITY

NHTSA's summary

SUNROOF NOT INITIALIZED: The sunroof will not operate and has the following fault codes stored: 030215 - SHD: invalid characteristic curve, no standardization exists and 030220 - SHD: System not standardized and 030295 - invalid characteristic curve, no standardization exists and 0302A0 - Service history: System not standardized. During operation, the sunroof may have lost initialization due to extended activation of the switch.

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

Equipment and accessories, Glass, wipers and mirrors

Vehicles listed
BMW X32018, 2019, 2020, 2021
BMW X42019, 2020, 2021
BMW X52019, 2020, 2021
BMW X62020, 2021
BMW X72019, 2020, 2021

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

Recalls for the same vehicles and component
22V2670002022-04-20. VISIBILITY:SUN/MOON ROOF ASSEMBLY
20210782021-02-18. Visual System
20V5140002020-08-27. EQUIPMENT:OTHER:LABELS; TIRES
20194802019-10-01. Visual System
18V9180002018-12-19. EQUIPMENT:OTHER:LABELS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B6304182025-07-28. Service bulletin. One or more of the LED daytime running lights are dim or discolored.
B6127232024-04-01. Service bulletin. The original Conditioned Based Service (CBS) Key data point closed with 23-07 soft ware, all CBS systems are now collectively under analysis.
B5115202024-04-01. Service bulletin. Deactivated: Currently investigating other components that maybe playing a factors besides what is mentioned in the SIB. Topic is under investigation.
B6404222024-03-02. Service bulletin. 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.
B5108192024-02-01. Service bulletin. The basic conditions for initializing the power windows are not met.
B6105242024-02-01. Service bulletin. The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 â“ âHU-H: Resetâ will be stored in the HU-H3.
B5413192024-02-01. Service bulletin. The roller sunshade (aka sun protection or sunblind) of the front panoramic sunroof is bunching up during operation or may hang down and appear loose.
B6534232023-12-06. Service bulletin. Customers may state that the alarm system (DWA) is not active after locking their unoccupied vehicle. Depending on the vehicle’s equipment and settings, no acoustic or optical confirmation (folding the mirrors/blinking confirmation) is noticeable. Additionally, the red anti-theft alarm LED in the interior mirror does not briefly flash every 2 seconds, indicating the alarm is armed.
B6615232023-12-06. Service bulletin. Emergency Stop Assistant is activated. Thisicon will appear in the CID when this function is activated.
B6127232023-12-06. Service bulletin. When using the Key Reader to retrieve CBS information from the customer key, no current vehicle data is available, or the data does not match the maintenance schedule.