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Service bulletin A9120852046489_4

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 id10177419
Published by NHTSA2020-08-06
Manufacturer's numberA9120852046489_4
Manufacturer's date2020-07-13
NHTSA componentEQUIPMENT:ELECTRICAL; STRUCTURE:BODY:DOOR; EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS

NHTSA's summary

This bulletin contains information on how to diagnose if the speakers have a hardware restriction that causes them to sound like they have been blown.

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

Body and frame, Equipment and accessories

Vehicles listed
AUDI TT2015, 2016, 2017, 2018, 2019, 2020
AUDI TT RS2017
AUDI TT RS2018, 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
TSB_2078648_42026-10-05. Service bulletin. This bulletin provides information about billing for a broken sunroof glass panel.
TSB_2068999_52026-10-05. Service bulletin. This TSB describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
TSB_2078648_32026-09-04. Service bulletin. This service information TSB provides warranty coverage information for vehicles with a broken sunroof panel.
TSB_2076945_22026-09-04. Service bulletin. This bulletin provides information about leather care and seat repair.
TSB_2068999_42026-09-04. Service bulletin. This TSB describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
TSB_2078648_22026-08-05. Service bulletin. This service information TSB provides warranty coverage information for vehicles with a broken sunroof panel.
TSB_2073282_12026-08-05. Service bulletin. This bulletin provides information when there is a film/visible rings on the clear glass cover of the headlight when the dipped beam is switched on.
TSB_2068573_52026-07-07. Service bulletin. This bulletin provides informaoitn when the rear parking sensor sometimes does not work, is loose, or there is a rear parking sensor fault message.
TSB_2074721_32026-06-04. Service bulletin. This bulletin provides information when there is noise from the backrest of the front seat.
TSB_2030471_82025-11-08. Service bulletin. This bulletin provides informaiton when the license plate mouting bracket threaded inserts are stripped.