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Service bulletin TT371401

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 id10238606
Published by NHTSA2023-07-05
Manufacturer's numberTT371401
Manufacturer's date2014-10-31
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

For communication faults set in various modules indicating loss of, or no communication with the mechatronic, please inspect the barrel connector lock for proper installation. If you find that the connector was not properly secured, inspect the terminals for damage. If no damage is found, reconnect the barrel connector and clear the faults.

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

Vehicles listed
VOLKSWAGEN BEETLE2014, 2015
VOLKSWAGEN CC2014, 2015
VOLKSWAGEN EOS2014, 2015
VOLKSWAGEN GOLF2014, 2015
VOLKSWAGEN GTI2014, 2015
VOLKSWAGEN PASSAT2014, 2015

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

Recalls for the same vehicles and component
19V6150002019-08-22. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE
18V4640002018-07-11. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE
16V1710002016-03-24. ELECTRICAL SYSTEM:WIRING
20161322016-03-23. Electrical

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:
SM 45-20252025-09-04. Other. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
V2719012011894262024-09-06. Service bulletin. Battery testing
TT 57-21-012024-08-06. Other. KESSY Key adaptation
9613012024-04-15. Service bulletin. Keyless Entry Inoperative after Access / Start (KESSY) Module Replacement
9214022024-04-15. Service bulletin. Washer Level Sensor
9114132024-04-15. Service bulletin. Car-Net? Operating Control Unit (OCU/J949) Service Guidelines & General Information
9114072024-04-15. Service bulletin. RNS 510 Welcome Screen Image Distorted