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Service bulletin A461774 2047919-

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 id10127837
Published by NHTSA2018-02-05
Manufacturer's numberA461774 2047919-
Manufacturer's date2017-07-20
NHTSA componentSERVICE BRAKES

NHTSA's summary

This informational bulletin explains why a slight rattling or click noise can be heard from the front of the car at about 25 mph.

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

Brakes

Vehicles listed
AUDI A4 ALLROAD2016, 2017, 2018
AUDI A52017, 2018
AUDI A5 CABRIOLET2017 to 2018
AUDI ALLROAD2016 to 2018
AUDI Q52017, 2018
AUDI Q72016
AUDI Q72017, 2018
AUDI S42016
AUDI S42017
AUDI S42018
AUDI S52017, 2018

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

Recalls for the same vehicles and component
20191732019-04-08. Brakes
19V2770002019-04-08. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER
20182922018-06-01. Brakes
18V3690002018-06-01. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

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
TSB_2075120_32026-09-04. Service bulletin. This bulletin provides information about the general approach for brake vibration concerns.
TSB_2072304_42026-09-04. Service bulletin. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
TSB_2069904_32026-09-04. Service bulletin. This bulletin provides information for all models regarding brake sounds.
TSB_2069078_42026-09-04. Service bulletin. This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).
TSB_2067132_42026-09-04. Service bulletin. This bulletin provides information when there is corrosion on the friction survace of steel brake discs.
TSB_2069904_22025-11-08. Service bulletin. This bulletin provides information for all models regarding brake sounds.
TSB_2075120_22025-11-08. Service bulletin. This bulletin provides information regarding the general approach for all Audi vehicles regarding brake vibrations.
TSB_2072304_32025-11-08. Service bulletin. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
TSB_2069078_32025-11-08. Service bulletin. This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).
TSB_2067132_32025-11-08. Service bulletin. This bulletin provides information when there is corrosion on the friction survace of steel brake discs.