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Service bulletin 0406

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 id10011880
Published by NHTSA2005-02-03
Manufacturer's number0406
Manufacturer's date2004-12-13
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

NHTSA's summary

COOLANT LEAK AT OIL COOLER HOSES. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Cooling system

Vehicles listed
AUDI A41998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
AUDI A61998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

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

Recalls for the same vehicles and component
98V1340001998-06-22. 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
Edition922023-02-06. Service bulletin. Idenifying and mixing factory fill engine coolants
AWA-08-032008-07-28. Service bulletin. AUDI SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ENGINE COOLANT TEMPERATURE SENSOR WARRANTY EXTENSION FOR CERTAIN 2001-2004 AUDI MODEL YEAR VEHICLES. CSC WAS RECEIVED *PE
05062006-01-17. Service bulletin. COOLANT LEAKING FROM REAR COOLANT PIPE NIPPLE. *TT
05032005-05-19. Service bulletin. COOLANT LEAK OR ON HEAT IN PASSENGER COMPARTMENT. *EH
04112005-01-27. Service bulletin. UPDATE PROGRAMMING ENGINE CONTROL MODULE FLASHING TO CORRECT EVAP PURGE VALVE DTC P0441 IN THE AUDI 2004 CABRIOLET . *TC
04012004-10-19. Service bulletin. MAP CONTROLLED ENGINE COOLING THERMOSTAT, SERVICING. AUDI A4 2002-2005 AND AUDI CABRIOLET 2003-2005. *TT