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Service bulletin UPDATE01A3

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 id10252228
Published by NHTSA2024-04-01
Manufacturer's numberUPDATE01A3
Manufacturer's date2013-09-16
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

Coolant Flush (NVLW)

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

Engine, Cooling system

Vehicles listed
VOLKSWAGEN PASSAT2014

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
V8016012040580102024-02-06. Service bulletin. Update TB because of new engine coolant part number.
UPDATE01AE2023-08-14. Service bulletin. Coolant Flush (NVLW)
V1917012022548102023-06-06. Service bulletin. Introduce new engine coolant compatible with all models and all model years.
EN-1223132022-03-28. Service bulletin. VW Elsa Newsletter.
V8720022061094_22020-12-04. Service bulletin. Using Nitrogen to assist in finding A/C refrigerant leaks.
V8016012040580_82020-07-07. Service bulletin. Updated to changes gallons to liters in Warranty parts table.
V801601_20405802019-12-06. Service bulletin. Updated to include Noise Dampining Pan Self Locking Bolts in Required Parts table.
analysis list 032018-12-10. Service bulletin. MIL-on fault P2407 in the ECM
TT 19 18 012018-12-03. Service bulletin. Alternate diagnostic process for overheating.
TT 19-13-022017-10-31. Service bulletin. Tech Tips (2.0L CCTA/CBFA Coolant Leak or Repeat Coolant Leak from the Water Pump Area): Inspect the water pump for signs of contact with engine oil. Engine oil may cause the water pump gasket to swell, which may lead to a coolant leak. This document informs of the precaustions necessary if a water pump replacement is necessary.