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Service bulletin TT 91 20 08

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 id10176769
Published by NHTSA2020-07-07
Manufacturer's numberTT 91 20 08
Manufacturer's date2020-06-19
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

5F module issue and replacement

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 GOLF2015
VOLKSWAGEN GOLF SPORTWAGEN2015
VOLKSWAGEN GTI2015

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

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
9114132024-04-15. Service bulletin. Car-Net? Operating Control Unit (OCU/J949) Service Guidelines & General Information
TT9614052024-04-08. Service bulletin. Immobilizer Key/Key Remote Adaptation Test Plan
23N7UPDATEa2024-04-01. Service bulletin. TDI Battery Management Software
23N7UPDATE2024-04-01. Service bulletin. TDI Battery Management Software