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Service bulletin TT571901

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 id10158709
Published by NHTSA2019-05-06
Manufacturer's numberTT571901
Manufacturer's date2019-04-05
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL

NHTSA's summary

SVM clarification based on kessy equipment

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

Electrical system, Equipment and accessories

Vehicles listed
VOLKSWAGEN PASSAT2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019

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

Recalls for the same vehicles and component
16V1710002016-03-24. ELECTRICAL SYSTEM:WIRING
20161322016-03-23. Electrical
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
VOS-26-422026-08-05. 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 issue: DA 0019 - Hotfix 12-V battery test(s) – No battery diagnosis - Inconclusive test result.
VOS-26-152026-04-06. 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 multiple test plans: All basic settings test for the following components - Fill and bleed cooling system issue, N493, J338, Camshaft, V465 etc. Use this test for all the basic setting. You will need to select the component you need to run the basic settings. But there are also stand-alone tests for each of those components.
VOS-26-012026-02-06. 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 a test that is not reading any information from the battery data module (BDM) and will output:
V2715032016076_132026-01-07. Service bulletin. Diagnosis for Excessive Current Draw.
V9419012011521_202025-01-07. Service bulletin. Internal Moisture Accumulation
V2719012011894262024-09-06. Service bulletin. Battery testing
VWP13112024-04-22. Service bulletin. Model Year 2014 Prepaid PDI Time Units
VWM14022024-04-22. Service bulletin. This communication contains important information and SAGA claim entry requirements for the Volkswagen Carefree Maintenance Program for all Model Year 2015 and newer VW models with Gasoline Engines.
VWM14012024-04-22. Service bulletin. Volkswagen Care Scheduled Maintenance Interval Time or Mileage Guidelines
9613012024-04-15. Service bulletin. Keyless Entry Inoperative after Access / Start (KESSY) Module Replacement