# Service bulletin Circ34K1\_REV1

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.

- Type: Service bulletin
- NHTSA id: 10245223
- Published by NHTSA: 2023\-12\-06
- Manufacturer's number: Circ34K1\_REV1
- Manufacturer's date: 2023\-11\-03
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN

## NHTSA's summary

"Transmission Control Module \(TCM\) Software \- Updated repair steps after software update is completed. Added example photos of transmission damage. Added Canadian TSB number to reference if car returns with fault."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245223-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245223-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 2018 VOLKSWAGEN GOLF R

## Other bulletins for the same vehicles and component

- [Dealer34K1\_REV1](/bulletins/10245225.md), 2023-12-06, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN. "Transmission Control Module \(TCM\) Software \- Updated repair steps after software update is completed. Added example photos of transmission damage. Added Canadian TSB number to reference if car returns with fault."
- [Dealer 34K1](/bulletins/10241186.md), 2023-09-01, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; POWER TRAIN. Dealer Letter to announce Repair Available \- Service Action 34K1 / TCM Software
- [Circular 34K1](/bulletins/10241185.md), 2023-09-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Volkswagen is providing updated transmission control module \(TCM\) software to enhance an in\-vehicle alert should a problem arise within the auxiliary hydraulic pump. Additionally, if a specific fault is found after the software is updated, a repair will be made to the transmission.
- [V371802203397511](/bulletins/10238310.md), 2023-07-10, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Automatic Transmission Fluid Requirements
- [Dealer34J734L9](/bulletins/10206812.md), 2022-02-04, Service bulletin: POWER TRAIN; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\). Replace the gear shift cover chrome trim frame.
- [Circ\_34J734L9](/bulletins/10206794.md), 2022-02-04, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT; POWER TRAIN:MANUAL TRANSMISSION. Replace the gear shift cover chrome trim frame.
- [TT 34 21 01](/bulletins/10197674.md), 2021-07-02, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Reverse gear function note.
- [18VWUSMN112619](/bulletins/10168646.md), 2019-12-06, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. "Additional Maintenance Items section: ""Transmission, Automatic \(non\-DSG\): Change fluid and filter every 80K miles"" REMOVED: ""and filter"""

JSON: [/v1/bulletins/10245223](/v1/bulletins/10245223)

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