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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.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
A0021552011732122022-01-05. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
V6919012010479142021-12-07. Service bulletin. ELECTRICAL SYSTEM. Update to model year applicability.
V0118122014603172021-07-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Software Version Management (SVM)
TT 57 18 02_32021-04-06. Service bulletin. ELECTRICAL SYSTEM. Key battery diagnosis, updated to include additional model year applicability.
V0118122014603162021-03-04. Service bulletin. ELECTRICAL SYSTEM. Software Version Management (SVM) instruction updated to include model year 2021
V2719012011894162021-02-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Battery testing. Updated to include additional model and model year applicability.
TT 57 10 152021-01-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Updated key ordering protocol
VOS-20-332020-10-06. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS-20-282020-09-03. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS-20-232020-08-06. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS-20-152020-05-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
TT 97 20 01 SS12020-05-07. Service bulletin. ELECTRICAL SYSTEM. Voltage Drop Testing. Updated for picture clarity.
V2719022033978_82020-05-07. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Generator replacement, updated to include model years 2020 & 2021
VOS-20-142020-05-07. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS-20-132020-05-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
Circular 24EN2020-04-02. Service bulletin. ELECTRICAL SYSTEM. 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.
TT 01 20 012020-03-05. Service bulletin. ELECTRICAL SYSTEM. ERP fault information.
VOS-20-052020-02-08. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
TT 57 18 042020-02-08. Service bulletin. ELECTRICAL SYSTEM. Remote start diagnostic information. Additional model year applicability.
VOS-19-342020-01-08. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
V011812_20146032020-01-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Update model applicability to MY 2020.
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.
VOS-19-242019-10-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
VOS-19-222019-09-10. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This document outlines updates to the software used to perform vehicle diagnostics

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