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Service bulletin A911943 20539171

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 id10155410
Published by NHTSA2019-04-01
Manufacturer's numberA911943 20539171
Manufacturer's date2019-03-08
NHTSA componentEQUIPMENT; EQUIPMENT:ELECTRICAL

NHTSA's summary

This bulletin contains a software update for when the infotainment system sporadically reboots while driving without interaction by the customer.

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

Equipment and accessories

Vehicles listed
AUDI A3 CABRIOLET2017
AUDI A4 ALLROAD2017
AUDI A52018
AUDI Q52018

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
SM 21-20242024-04-05. Service bulletin. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
SM 19-20242024-04-05. Service bulletin. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
SM 17-20242024-04-05. Service bulletin. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
A9124802055591_62024-03-06. Service bulletin. This bulletin provides information for vehicles when the infotainment system sporadically reboots.
A9124682072959_12024-03-06. Service bulletin. This bulletin provides information for when Apple CarPlay pops up or takes over audio without user intervention in vehicles with the Audi Smartphone Interface.
A9124632044694_32024-03-06. Service bulletin. This bulletin provides information pertaining to MMI Navigation database concerns.
SM 56-20232023-12-07. Service bulletin. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
A0023812070568_22023-12-06. Service bulletin. This bulletin provides information on the VAS 611 015 PICO-NVH tool for professional noise analysis.
A9123332058007_22023-11-06. Service bulletin. This bulletin provides information for when Navigation, Bluetooth, smartphone interface, and voice recognition is not available.
A7423262071893_12023-11-06. Service bulletin. This bulletin provides damage assessment guidelines for textile seat covers.