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Service bulletin A1921182061604_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 id10194629
Published by NHTSA2021-06-03
Manufacturer's numberA1921182061604_4
Manufacturer's date2021-05-28
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

NHTSA's summary

This bulletin contains instructions for resolving a coolant leak.

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, Engine

Vehicles listed
AUDI A32007, 2008, 2009, 2010, 2011, 2012, 2013
AUDI A42007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
AUDI A62012, 2013, 2014, 2015
AUDI A82013
AUDI Q32012 to 2014
AUDI Q32015, 2016, 2017, 2018
AUDI Q52011, 2012, 2013, 2014, 2015, 2016, 2017
AUDI TT2009, 2010, 2011, 2012, 2013, 2014

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

Recalls for the same vehicles and component
20221332022-03-23. Engine
22V1780002022-03-23. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
20186802018-12-05. Electrical
18V8620002018-12-05. ELECTRICAL SYSTEM:WIRING
20181742018-04-11. Electrical
18V2290002018-04-11. ENGINE AND ENGINE COOLING:COOLING SYSTEM
20174832017-10-06. Electrical
17V6220002017-10-05. ELECTRICAL SYSTEM:WIRING
20170022017-01-04. Engine
17V0020002017-01-03. ENGINE AND ENGINE COOLING:COOLING SYSTEM

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
TSB_2073747_42026-08-05. Service bulletin. This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.
SM 01-20262026-08-05. Other. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
TSB_2082323_12026-07-07. Service bulletin. This bulletin provides informaiton when the engine is not running smoothly, misfiring.
TSB_2074640_32026-07-07. Service bulletin. This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
TSB_2073867_32026-07-07. Service bulletin. This bulletin provides information when DTC U140A00 Terminal 30 is stored in the ECM.
TSB_2059335_72026-07-07. Service bulletin. This bulletin provides information when there are noises from the area around the instrument cluster.
TSB_2074729_32026-07-07. Service bulletin. This bulletin provides informationwhen noises/vibration are detected from front of vehicle in dynamic mode.
TSB_2080517_42026-06-04. Service bulletin. This bulletin provides informaiotn when the starter battery is discharged or defective.
TSB_2080517_32026-05-05. Service bulletin. This bulletin provides informaiotn when the starter battery is discharged or defective.
TSB_2081409_12026-04-07. Service bulletin. This bulletin provides informaiton regarding the Universal Traffic Recorder.