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Service bulletin A341838 2048671-

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 id10153124
Published by NHTSA2019-02-19
Manufacturer's numberA341838 2048671-
Manufacturer's date2018-11-26
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This bulletin contains instructions for when DTC U030000 appears and ?All Wheel Drive Malfunction Message? is displayed in the instrument cluster.

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

Electrical system, Transmission and driveline, Software, Transfer case

Trouble codes named

U0300

Vehicles listed
AUDI A4 ALLROAD2017, 2018
AUDI A52018
AUDI A5 CABRIOLET2018
AUDI ALLROAD2017 to 2018
AUDI Q52018

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

Recalls for the same vehicles and component
16V6420002016-09-06. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING

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
A3924582059057_72024-03-06. Service bulletin. This bulletin provides information when quattro Ultra has vibrations or binding in tight turns.
A0023822047812_72024-01-04. Service bulletin. This bulletin provides information on how to set up and use the SD Creator for obtaining vehicle software updates via the Mirror Server.
A7222442048311_62022-07-01. Service bulletin. This bulletin contains a software update to correct an intermittently inoperative seat belt positioner.
A4622332051095_72022-07-01. Service bulletin. This informational bulletin contains instructions on how to download and use the Audi Frequency App.
DC_91CD_Train2022-03-04. Service bulletin. 3G Turndown (91CD) Dealer Training
Dealer 91CD2022-02-04. Service bulletin. AT&T has announced its plan to discontinue its 3G network in the U.S. starting in February 2022. This will impact the Audi connect services in certain 2017-2019 model year Audi vehicles.
A0021552011732122022-01-05. Service bulletin. This bulletin contains general instructions for software updates.
A9621712051239_22021-08-04. Service bulletin. This bulletin contain instructions for addressing issues with the garage door remote and HomeLink.
A9121072060681_32021-07-02. Service bulletin. This bulletin contains instructions to update eligible cars from Google Earth to the new service provided by HERE.
A4321482059665_22021-07-02. Service bulletin. This bulletin contains a software update that corrects the control module configuration and addresses a warning light.