# Service bulletin B511823

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: 10242880
- Published by NHTSA: 2023\-10\-01
- Manufacturer's number: B511823
- Manufacturer's date: 2023\-09\-25
- NHTSA component: STRUCTURE

## NHTSA's summary

A groaning noise is heard from the trunk when driving on rough roads.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242880-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10242880-9999.pdf)

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

## Components

Body and frame

## Vehicles listed

- 2020 to 2024 BMW 430I
- 2020 BMW 440I
- 2021 to 2023 BMW X4

## Other bulletins for the same vehicles and component

- [B010826](/bulletins/11037501.md), 2026-09-28, Warranty extension: STRUCTURE:BODY. The coverage period for qualifying lower rear side panel water drain repair that addresses the issues described in the Service Information Bulletin has been extended to 15 years / 150,000 miles, as determined from the original first in\-service / delivery date.
- [B640626](/bulletins/11035402.md), 2026-07-31, Service bulletin: STRUCTURE:BODY. A “whistling” noise is heard from the centerconsole/instrument panel when using theheating and air conditioning \(HVAC\) system. Heard with the blower motor set tospeed 2 or above Noise goes away on high blower speed Noise is loudest with the vents on theback of the center console in the closedposition Noise is heard the most near thecharging tray \(where center consolemeets instrument panel\)
- [B641224](/bulletins/11032743.md), 2026-05-18, Service bulletin: STRUCTURE:BODY. 1. Use of aftermarket accessory hang\-on cellular phone holders and/or air fresheners can break the instrument panel air vent slats. Damage and/or issues caused by outside influences are not covered under the BMW limited warranties. Originally, the air vent slats were only repairable by replacing the entire front center dash vent assembly; which in some applications, also included the IHKA control module.
- [B510626](/bulletins/11031566.md), 2026-04-27, Service bulletin: STRUCTURE:BODY. While driving on rough surfaces, a “tapping” noise can be heard from the tailgate area
- [B512222](/bulletins/11024208.md), 2025-10-09, Service bulletin: STRUCTURE:BODY. Hood lever is pulled twice but the hood only achieves the pre\-latch position on both sides.
- [B510324](/bulletins/11022103.md), 2025-08-24, Service bulletin: STRUCTURE:BODY. While opening any of the doors, a groaning sound is heard from the door brake. Doors open and close stiffly.
- [B410725](/bulletins/11022101.md), 2025-08-24, Service bulletin: STRUCTURE:BODY. While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area \(highlighted in orange\) on either the right or left side.
- [B511223](/bulletins/11020911.md), 2025-07-28, Warranty extension: STRUCTURE:BODY. After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the front bottom active air flap is obstructed or blocked.
- [B510725](/bulletins/11017284.md), 2025-04-28, Service bulletin: STRUCTURE:BODY. The trunk lid trim panel may partially comeloose/dangle \(red arrows show the mostprevalent areas\).
- [B511223](/bulletins/11017084.md), 2025-04-17, Service bulletin: STRUCTURE:BODY. A vehicle listed above may arrive with a Check Control Message \(CCM\), and/or malfunction indicator lamp\(MIL\) illuminated. After carrying out the vehicle test, one or more of the stored faults indicate that the operation of the frontbottom active air flap is obstructed or blocked.

JSON: [/v1/bulletins/10242880](/v1/bulletins/10242880)

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