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Service bulletin customer letter

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 id10154069
Published by NHTSA2019-03-04
Manufacturer's numbercustomer letter
Manufacturer's date2018-12-05
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

23Z3 pre-notification_customer

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, Equipment and accessories, Exhaust and emissions

Vehicles listed
VOLKSWAGEN PASSAT2012, 2013, 2014
VOLKSWAGEN PASSAT2019

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

Recalls for the same vehicles and component
17V3090002017-05-11. POWER TRAIN:DRIVELINE:DRIVESHAFT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL
20140682014-03-05. Accessories

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
V0116152014815_202026-10-06. Service bulletin. Suggested fuel additive
SM 35-20262026-09-04. Other. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
V1718062017813_242026-08-05. Service bulletin. Oil Consumption Measurement and Electronic Oil Consumption Measurement
V1719012012855_812026-07-07. Service bulletin. Volkswagen Engine Oil Standards
TT 13-20-01_32026-07-07. Service bulletin. Instruction, how to lubicate engine before initial start.
TT 10-18-02_22026-07-07. Service bulletin. Lubricating engine components before reassembly.
VOS-26-212026-04-06. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the error message ERP0204E could occur during perform initial operation, software configuration, SVM updates for any control module(s) etc.
WLA-25-112025-11-10. Service bulletin. Coolant Bleed Procedure
V1917012022548_152025-11-10. Service bulletin. G12Evo can now be mixed with previous coolants.
V1718062017813_232025-11-10. Service bulletin. How to measure engine oil consumption.