WenmarOpen by Wenmar Pro

Service bulletin A401878 2047920_

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 id10138317
Published by NHTSA2018-05-21
Manufacturer's numberA401878 2047920_
Manufacturer's date2018-03-02
NHTSA componentSUSPENSION:FRONT:WHEEL BEARING; WHEELS; STEERING; SUSPENSION:FRONT

NHTSA's summary

The bulletin contains diagnosis information for noises on the front end of the vehicle. Potential rolling sounds.

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

Steering, Suspension, Wheels, Wheel bearing

Vehicles listed
AUDI A4 ALLROAD2017, 2018
AUDI A52017, 2018
AUDI Q72017, 2018

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

Other bulletins for the same vehicles and component
A4022372024318112022-04-05. Service bulletin. This bulletin describes the proper procedure to address a clicking or clacking noise from the wheel bearing
A4020122047920_52020-08-06. Service bulletin. The bulletin contains diagnosis information for noises on the front end of the vehicle. Potential rolling sounds.
A401761 2024318-2018-02-05. Service bulletin. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
A401774 2024318-2018-02-05. Service bulletin. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
A401768 2024318-2018-02-05. Service bulletin. This technical service bulletin provides instructions for correcting a clicking sound from the wheel bearing(s).
A401655202431842017-03-01. Service bulletin. THIS TECHNICAL SERVICE BULLETIN PROVIDES INSTRUCTIONS FOR CORRECTING A CLICKING SOUND FROM THE WHEEL BEARING(S).