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Service bulletin A9419122056012_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 id10164487
Published by NHTSA2019-09-09
Manufacturer's numberA9419122056012_1
Manufacturer's date2019-08-29
NHTSA componentEXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT; EXTERIOR LIGHTING:TURN SIGNAL

NHTSA's summary

This bulletin contains a software update that addresses a intermittent turn signal malfunction message in the instrument cluster with DTC C11A415.

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

Lighting, Turn signals

Trouble codes named

C11A4

Vehicles listed
AUDI Q52018, 2019

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
A9419102055350_12019-07-09. Service bulletin. This bulletin contains a ZDC update for when the sequential turn signals do not work on the rear taillights.