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Service bulletin A4521142061906_1

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 id10185657
Published by NHTSA2021-02-04
Manufacturer's numberA4521142061906_1
Manufacturer's date2021-01-15
NHTSA componentSERVICE BRAKES; PARKING BRAKE

NHTSA's summary

Parking brake warning in instrument cluster while starting vehicle, DTC U103100 is stored in the ABS control module.

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, Parking brake

Trouble codes named

U1031

Vehicles listed
AUDI E-TRON2019
AUDI E-TRON2020
AUDI E-TRON2021

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
A4521172061906_22021-07-02. Service bulletin. This bulletin contains a software update for DTC U103100.
A9121032058769_42021-06-03. Service bulletin. This bulletin contains instructions for checking the sensors and resolving DTCs B107BF0 and B10FCF0.
A9121642024323_72021-02-04. Service bulletin. This bulletin contains technical information regarding when the parking aid sporadically warns of obstacles that don't exist or it is inoperative/constant warning.
A5719582055933_12019-09-09. Service bulletin. This bulletin contains a software update for DTC B122D29.Includes 2019-2020 e-tron Quattro