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Service bulletin TSB_2072549_4

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 id11023758
Published by NHTSA2025-10-03
Manufacturer's numberTSB_2072549_4
Manufacturer's date2025-09-23
NHTSA componentSERVICE BRAKES

NHTSA's summary

This bulletin provides informatino when there are DTCs stored in the ABS control unit; "magnetic field too low" C101AF1, C101BF1, C101CF1, C101DF1.

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

Trouble codes named

C101A, C101B, C101C, C101D

Vehicles listed
AUDI A32022, 2023, 2024
AUDI RS 32022, 2023, 2024
AUDI S32022, 2023, 2024

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
TSB_2079459_22026-10-05. Service bulletin. This bulletin provides information when the DTC U300100 is logged I n the electromechanical brake servo.
TSB_2077435_32026-09-04. Service bulletin. This bulletin provides information when there are cracks on the friction ring surface on ceramic brake discs.
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_2034143_112026-01-07. Service bulletin. This Repair Authorization requests that technicians contact the Technical Assistance Center before proceeding with any brake repairs on vehicles with Cceramic brakes.
TSB_2077435_22025-11-08. Service bulletin. This bulletin provides information when there are cracks on the friction ring surface on ceramic brake discs.
TSB_2069904_22025-11-08. Service bulletin. This bulletin provides information for all models regarding brake sounds.