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Service bulletin SM 121-2019

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 id10169486
Published by NHTSA2020-01-08
Manufacturer's numberSM 121-2019
Manufacturer's date2019-12-12
NHTSA componentEQUIPMENT

NHTSA's summary

The part numbers listed in the document are to be returned and only the superseded part numbers going forward.

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 TT2016, 2017, 2018, 2019, 2020

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
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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.
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.
A9023452064983_62023-11-06. Service bulletin. This bulletin provides information for when the Virtual cockpit displays a colorful line (pixel error).
A7423262071893_12023-11-06. Service bulletin. This bulletin provides damage assessment guidelines for textile seat covers.
A0023782066297_42023-11-06. Service bulletin. This bulletin provides information related to the VIN-4-PIN Program.
A0023762071721_12023-11-06. Service bulletin. This bulletin provides information for when unauthorized/unjustified DTC memory entries are captured in ODIS test Plans (Ghost faults).
A0023752066297_32023-11-06. Service bulletin. This bulletin provides details on the VIN-4-PIN program.