Service bulletin B511020

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)
Type	Service bulletin
NHTSA id	10174014
Published by NHTSA	2020-04-20
Manufacturer's number	B511020
Manufacturer's date	2020-04-01
NHTSA component	BACK OVER PREVENTION; VISIBILITY

NHTSA's summary

INTERFERENCE NOISE WHEN FOLDING THE OUTSIDE MIRRORS: Interference noises (creaking groaning clicking) may be present when folding the side view mirrors in or out. Excessive friction on the pivoting mechanism of the side view mirror hinge.

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

Driver assistance, Glass, wipers and mirrors, Backup camera

Vehicles listed
BMW 330I	2019, 2020
BMW M340I	2020
BMW Z4	2019, 2020

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

Recalls for the same vehicles and component
21V096000	2021-02-19. BACK OVER PREVENTION:SOFTWARE; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
19V684000	2019-09-27. BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

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
B650414	2022-12-12. Service bulletin. According to the customer, the airbag warning light was on, but it may not be illuminated when the vehicle arrives in the workshop. 1. ACSM fault code "930A60 - Seat occupancy detection, front passenger; malfunction" is stored. The fault may or may not currently be present. Or 2. ACSM fault code "930A1C - Front passenger seat occupancy detection transmitting fault(moisture)" is stored. The fault may or may not currently be present.
B090321	2022-06-21. Service bulletin. In some rare cases a customer vehicle might be excluded from one or more Remote Software Upgrade(RSU) campaigns. This SIB gives an overview how to identify these vehicles and how to proceed in case of a customer complaint.
B121221	2021-12-27. Service bulletin. ???Due to an unfavorable operating point primarily in the low-end torque range, the fuel vapor scavenging that takes place in that range may result in incorrect detection of a mixture that is too rich. As a result, an incorrect mixture adaptation value is stored.
B662919	2021-04-26. Service bulletin. TOP VIEW CAMERA IMAGE IS MISALIGNED: The top view image of the vehicle is misaligned when observed in the Control Information Display (CID).
B090120	2021-04-26. Service bulletin. BMW REMOTE SOFTWARE UPGRADE IS NOT OFFERED FOR INSTALLATION: The customer complains that the BMW Remote Software Upgrade (RSU) is not possible in his/her vehicle, though the Remote Software Upgrade menu is available in the vehicle and a download was performed by the vehicle or the BMW Connected App.
B662919	2020-12-21. Service bulletin. TOP VIEW CAMERA: The top view image of the vehicle is misaligned when observed in the Control Information Display (CID). When the vehicle is parked in a parking spot with line markings, it is clearly noticed in the CID that the lines are not parallel to the side of the vehicle. This may be noticed on either the driver side, passenger side or both.
B661720	2020-12-21. Service bulletin. SURROUND VIEW - PARKING VIEW IMAGES DISPLAYED INCORRECTLY: After programming and shifting into reverse, there may be various sporadic concerns regarding the rearview camera and the surround view (top view) camera images in the CID (Central Information Display).
B660820	2020-11-23. Service bulletin. SERVICE ACTION - REPLACE RIGHT REAR SHORT RANGE RADAR SENSOR (SRR): The functionality of the right rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.
B661020	2020-05-18. Service bulletin. KAFAS04 (CAMERA-BASED DRIVER ASSISTANCE SYSTEMS) LIMITATIONS: Various functions of the KAFAS (without radar installed) are not operating up to customer expectations.
B610820	2020-04-20. Service bulletin. ALARM ACTIVATES WHEN OPENING THE TRUNK: When the trunk is opened using the trunk lid mounted switch the vehicle alarm will intermittently activate. Opening the trunk using the remote control button does not cause this issue to happen. CAUSE Anti-theft alarm system software.