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Service bulletin TT 38 18 01

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 id10150859
Published by NHTSA2018-12-10
Manufacturer's numberTT 38 18 01
Manufacturer's date2018-09-07
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

Transmission mechitronics adaptation to immobilizer instruction.

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

Equipment and accessories, Labels and manuals, Transmission and driveline, Automatic transmission

Vehicles listed
VOLKSWAGEN GOLF2015, 2016, 2017
VOLKSWAGEN GOLF R2015 (the catalog's model; the bulletin names a series or trim of it)
VOLKSWAGEN GOLF R2016, 2017
VOLKSWAGEN GOLF SPORTWAGEN2015, 2016, 2017

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

Other bulletins for the same vehicles and component
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UPDATE37J22023-08-14. Service bulletin. AQ250 TCM Software Update (FED_EMS)
V3718022033975112023-07-10. Service bulletin. Automatic Transmission Fluid Requirements
TB0016012023-05-22. Service bulletin. Choosing service numbers-Transmission and Drivetrain.
Dealer34J734L92022-02-04. Service bulletin. Replace the gear shift cover chrome trim frame.
Circ_34J734L92022-02-04. Service bulletin. Replace the gear shift cover chrome trim frame.
TT 34 21 012021-07-02. Service bulletin. Reverse gear function note.
TT 37-18-02ss12019-06-12. Service bulletin. Addressing Transmission Fluid Temperature Sensor Concerns, update authing system metadata.