# Service bulletin B340220

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: 10175274
- Published by NHTSA: 2020\-05\-18
- Manufacturer's number: B340220
- Manufacturer's date: 2020\-04\-01
- NHTSA component: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\)

## NHTSA's summary

NOTICEABLE JERK WHEN DRIVING OFF IN ACTIVE CRUISE CONTROL \(ACC\) MODE: A noticeable jerk can be felt at 2\-3 mph when driving off in ACC mode. Software in the Dynamic Stability Control \(DSC\) unit.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175274-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175274-9999.pdf)

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

## Components

Driver assistance

## Vehicles listed

- 2019 to 2020 BMW 330I
- 2020 BMW M340I

## Recalls for the same vehicles and component

- [21V096000](/recalls/nhtsa/21V096000.md), 2021-02-19: BACK OVER PREVENTION:SOFTWARE; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
- [19V684000](/recalls/nhtsa/19V684000.md), 2019-09-27: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

## Other bulletins for the same vehicles and component

- [SIB660823](/bulletins/10236236.md), 2023-05-15, Service bulletin: ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR. Issues with the various functions of the camera\-based driver assistance systems \(KAFAS system\) can possibly lead to following customer complaints: KAFAS camera system deactivates itself, due to system restrictions that are not clear to the customer KAFAS camera system cannot be activated due to system restrictions that are not clear to the customer Road signs are sporadically not detected.
- [B841422](/bulletins/10235206.md), 2023-05-01, Service bulletin: LANE DEPARTURE:LANE KEEP:NAVIGATION SYSTEM/SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). Customer is shown an incorrect GPS location in the vehicle \(i.e., Nav Map, coordinates\).
- [B652022](/bulletins/10227929.md), 2022-12-19, Service bulletin: LANE DEPARTURE; AIR BAGS; ELECTRICAL SYSTEM. A check control message for the restraint system appears. In the instrument cluster, the red air bag warning light lights up permanently. One of the following fault codes is stored in the ACSM \(air bag control unit\): 930949 \- Knee airbag, driver: short circuit to negative terminal 93094F \- Knee airbag, front passenger: short circuit to negative terminal 93094C \- Knee airbag driver's side: Resistance too great 930952 \- Knee airbag, front passenger: Resistance too great.
- [B650414](/bulletins/10227568.md), 2022-12-12, Service bulletin: LANE DEPARTURE; UNKNOWN OR OTHER; AIR BAGS; SEATS:BARRIERS; BACK OVER PREVENTION. 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.
- [SIB660820](/bulletins/10214992.md), 2022-07-05, Service bulletin: ELECTRICAL SYSTEM:ADAS. The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance" Check Control Message.
- [B090321](/bulletins/10214254.md), 2022-06-21, Service bulletin: BACK OVER PREVENTION:SOFTWARE. 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.
- [B661519](/bulletins/10211809.md), 2022-05-16, Service bulletin: EQUIPMENT; LANE DEPARTURE; STEERING. The steering intervention for Lane Departure Warning \(LDW\) is too strong \(severe\), which can create an uncomfortable feeling for the driver. Background: Steering intervention helps keep the vehicle in the lane if the system detects that a lane marking has been crossed. The steering intervention can be noticed on the steering wheel and can be manually overridden at any time.
- [B121221](/bulletins/10205615.md), 2021-12-27, Service bulletin: BACK OVER PREVENTION. ???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.
- [B340621](/bulletins/10199294.md), 2021-07-19, Service bulletin: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); ELECTRICAL SYSTEM:SOFTWARE. SERVICE ACTION: PROGRAM THE DYNAMIC STABILITY CONTROL \(DSC\) UNIT: Software in the DSC unit could cause a reduction of brake regeneration for the next 40 drive \(key\) cycles.
- [B340621](/bulletins/10198901.md), 2021-07-06, Service bulletin: ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). SERVICE ACTION: PROGRAM THE DYNAMIC STABILITY CONTROL \(DSC\) UNIT: Software in the DSC unit could cause a reduction of brake regeneration for the next 40 drive \(key\) cycles.

JSON: [/v1/bulletins/10175274](/v1/bulletins/10175274)

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