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Service bulletins for the 2012 Volkswagen Passat

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.

1572 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
V8720022061094_22020-12-04. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Using Nitrogen to assist in finding A/C refrigerant leaks.
V1718062017813142020-12-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Oil consumption test updated to include additional models and model year applicability.
TT 00 16 02-42020-11-05. Service bulletin. SERVICE BRAKES; STEERING; ENGINE. Mandatory fastener.
V2118012036110122020-10-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. Administrative republish, erWIN missed upload and TB would not display.
TT 01 20 052020-10-06. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PRESSURE/TEMPERATURE SENSOR. Symptom based diagnostic assistance for high pressure fuel pump being out of time.
V2118012036110112020-10-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Update to vendor code.
TT 13 20 012020-09-03. Service bulletin. ENGINE AND ENGINE COOLING. Oil pressure priming after engine replacement or internal repair.
VOS-20-252020-08-06. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
TT 01 20 032020-07-07. Service bulletin. ENGINE AND ENGINE COOLING. Nox sensor diagnosis.
TT 01 15 082020-06-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Cam screen damage.
TT 15 20 022020-05-07. Service bulletin. ENGINE AND ENGINE COOLING. Oil leaking at cam seal.
V1719012012855302020-05-07. Service bulletin. ENGINE AND ENGINE COOLING. Update to Volkswagen engine oil specification attachments.
Dealer 24EN2020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Engine and/or transmission control software designed and certified for a similar model/model year may have been installed in vehicles affected by this action. It is currently unknown if this issue has an impact on vehicle tailpipe emissions.
V171901_20128552020-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Update to Volkswagen engine oil specification attachments.
V1719012012855282020-02-08. Service bulletin. ENGINE AND ENGINE COOLING. Update to Volkswagen engine oil specification attachments.
V1917012022548_82020-02-08. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Update to Volkswagen Identifying and mixing of coolant. Introducing new coolant type.
V1917012022548_72020-02-08. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Update to Volkswagen Identifying and mixing of coolant. Introducing new coolant type.
V171901_20128552019-12-06. Service bulletin. ENGINE AND ENGINE COOLING. Update to Volkswagen engine oil standards.
TT 26-19-042019-12-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Diganostic direction to locate exhaust leak
Dealer 24EF2019-12-06. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Engine and/or transmission control module software designed and certified for similar models/model years was used in vehicles affected by this emissions service action. It is undetermined whether there could be an impact to OBD or CO2 emissions. As a precautionary measure, Volkswagen is proactively updating the software calibrations on affected vehicles.
Circular 24EF2019-12-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Engine and/or transmission control module software designed and certified for similar models/model years was used in vehicles affected by this emissions service action. It is undetermined whether there could be an impact to OBD or CO2 emissions. As a precautionary measure, Volkswagen is proactively updating the software calibrations on affected vehicles.
V171901_20128552019-11-06. Service bulletin. ENGINE; EQUIPMENT. Update to Volkswagen engine oil standards.
V171901_20128552019-09-10. Service bulletin. ENGINE. Update to Volkswagen engine oil standards. Also includes 2004 and 2005 Jetta Wagon and 2018-2020 Tiguan LWB
V171901_20128552019-08-07. Service bulletin. ENGINE. Engine oil quality standards. Also includes all models for 1997-2003. Also Rabbit from 2006-2009.
V171806-20178132019-06-24. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE. Update to TB to include model year 2018 & 2019 applicability.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.