# Service bulletin B310120

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: 10182906
- Published by NHTSA: 2020\-11\-23
- Manufacturer's number: B310120
- Manufacturer's date: 2020\-10\-01
- NHTSA component: SUSPENSION

## NHTSA's summary

SERVICE ACTION \- REPLACE THE WISHBONE OR TENSION STRUT: An incorrectly pressed\-in rubber mount in the wishbone, or hydraulic mount in the tension strut can lead to acoustic abnormalities in the front axle. A process fault at the supplier resulted in the mounts of the affected wishbone or tension strut to be incorrectly pressed in.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10182906-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10182906-9999.pdf)

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

## Components

Suspension

## Vehicles listed

- 2021 BMW 330E
- 2019 to 2021 BMW 330I
- 2020 to 2021 BMW M340I
- 2019 to 2021 BMW Z4

## Other bulletins for the same vehicles and component

- [InVeh\-InApp\-Comm](/bulletins/11029010.md), 2026-02-25, Over\-the\-air update: SUSPENSION. It was found that the rubber mounts of the wishbone or the tension strut were not correctly pressed in due to a manufacturing fault at the supplier's end. This can lead to an acoustic abnormality in the vehicle.
- [B410323](/bulletins/10241366.md), 2023-08-28, Service bulletin: SUSPENSION. The left front suspension's aluminum strut dome \(general area circled\) was incorrectly riveted to the body's wheel\-well.
- [B310120](/bulletins/10182607.md), 2020-11-16, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. SERVICE ACTION \- REPLACE THE WISHBONE OR TENSION STRUT: An incorrectly pressed\-in rubber mount in the wishbone, or hydraulic mount in the tension strut can lead to acoustic abnormalities in the front axle. A process fault at the supplier resulted in the mounts of the affected wishbone or tension strut to be incorrectly pressed in.
- [B310120](/bulletins/10181218.md), 2020-10-19, Service bulletin: SUSPENSION. SERVICE ACTION \- REPLACE THE WISHBONE OR TENSION STRUT: An incorrectly pressed\-in rubber mount in the wishbone, or hydraulic mount in the tension strut can lead to acoustic abnormalities in the front axle. A process fault at the supplier resulted in the mounts of the affected wishbone or tension strut to be incorrectly pressed in.
- [B310514](/bulletins/10166229.md), 2019-10-21, Service bulletin: SUSPENSION. Front Suspension Ride Height Has Dropped: The front suspension ride height has dropped on one or both sides due to overload. This is caused by driving over obstacles \(e.g. potholes\) or an impact severe enough for the front spring strut damper to slip through the clamp of the steering knuckle.
- [B310219](/bulletins/10163036.md), 2019-07-22, Service bulletin: SUSPENSION. Tapping and/or thumping noises from the front end at approx. 10\-15 MPH while driving on a rough road surface. Unfavorable damper control of the EDC shock absorbers.
- [B310219](/bulletins/10159121.md), 2019-04-22, Service bulletin: SUSPENSION. TAPPING AND/OR THUMPING NOISES FROM THE FRONT END. Tapping and/or thumping noises from the front end at approx.10\-15 MPH while driving on a rough road surface. Unfavorable damper control of the EDC shock absorbers

JSON: [/v1/bulletins/10182906](/v1/bulletins/10182906)

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