NHTSA ID Number: 10245223
Manufacturer Communication Number: Circ34K1_REV1
TSB/Document Date: 2023-12-06
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."
N 91201001
BOLT, HEX, HD. (COMBI)
4.00
N 91231201
SCREW
5.00
WHT000729A
3.00
WHT005179
12 POINT SOCKET HEAD SCREW
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen
dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 5 of 48
Customer Letter Example (USA)
This notice applies to your vehicle: ,
Subject: Service Action 34K1 - Transmission Control Module (TCM) Software
Dear Volkswagen Owner,
As part of Volkswagen's ongoing commitment to customer satisfaction, we are informing you of our decision to
conduct a service action on certain 2018 model year Volkswagen Golf R vehicles. Our records show that you are
the owner of a vehicle affected by this action.
About
Action:
this
Service 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.
What will we do?
Your authorized Volkswagen dealer will update the transmission control module
(TCM) software in your vehicle. This work will take about an hour to complete and will
be performed for you free of charge.
Additionally, if a specific fault is found after the software is updated, a repair will be
made to the transmission. If this additional work is necessary, it will take about a day
and will be performed for you free of charge.
Please keep in mind that your dealer may need additional time for the preparation of
this service action, as well as to accommodate their daily workshop schedule.
What should you do?
Please contact your authorized Volkswagen dealer as soon as possible to schedule
this service. To set up an appointment online, please visit www.vw.com/find-adealer.
This service action will be available for you free of charge only until December 31,
2026. If you wish to have this service performed after that date, your dealer’s normal
costs associated with this repair will apply.
Lease vehicles and
address changes
If you are the lessor and registered owner of the vehicle identified in this action,
please forward this letter immediately via first-class mail to the lessee within ten (10)
days of receipt. If you have changed your address or sold the vehicle, please fill out
the enclosed prepaid Owner Reply card and mail it to us so we can update our
records.
Can we assist you
further?
If your authorized Volkswagen dealer fails or is unable to complete this work free of
charge within a reasonable time, or if you should have any questions about this
communication, please reach out to us using your preferred method of
communication at www.vw.com/contact or by calling us at 800-893-5298.
Checking your vehicle
for open Recalls and
Service Campaigns
To check your vehicle’s eligibility for repair under this or any other recall/service
campaign, please visit www.vw.com/owners/recalls and enter your Vehicle
Identification Number (VIN) into the Recall/Service Campaign Lookup tool.
We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your
vehicle continues to meet and exceed your expectations.
Sincerely,
Volkswagen Customer Protection
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 6 of 48
Customer Letter Example (Canada)
This notice applies to your vehicle: ,
Subject: Service Action 34K1 - Transmission Control Module (TCM) Software
Dear Volkswagen Owner,
As part of Volkswagen's ongoing commitment to customer satisfaction, we are informing you of our decision to
conduct a service action on certain 2018 model year Volkswagen Golf R vehicles. Our records show that you are
the owner of a vehicle affected by this action.
About
Action:
this
Service 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.
What will we do?
Your authorized Volkswagen dealer will update the transmission control module
(TCM) software in your vehicle. This work will take about an hour to complete and will
be performed for you free of charge.
Additionally, if a specific fault is found after the software is updated, a repair will be
made to the transmission. If this additional work is necessary, it will take about a day
and will be performed for you free of charge.
Please keep in mind that your dealer may need additional time for the preparation of
this service action, as well as to accommodate their daily workshop schedule.
What should you do?
In order to limit any possible inconvenience, please contact your authorized
Volkswagen dealer as soon as possible to schedule this service. Please keep in mind
that your dealer may need additional time for the preparation of the repair, as well as
to accommodate their daily workshop schedule.
This service action will be available for you free of charge only until December 31,
2026. If you wish to have this service performed after that date, your dealer’s normal
costs associated with this repair will apply.
Lease vehicles and
address changes
If you are the lessor and registered owner of the vehicle identified in this action, please
forward this letter immediately via first-class mail to the lessee within ten (10) days of
receipt. If you have changed your address or sold the vehicle, please fill out the
enclosed prepaid Owner Reply card and mail it to us so we can update our records.
Can we assist you
further?
If your authorized Volkswagen dealer fails or is unable to complete this work free of
charge within a reasonable time, please contact Customer Relations, Monday through
Friday from 8AM to 8PM EST by phone at 1-800-822-8987 or via our “Contact Us”
page at www.vw.ca.
We apologize for any inconvenience this matter may cause; however we are taking this action to help ensure your
vehicle continues to meet and exceed your expectations.
Sincerely,
Volkswagen Customer Protection
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 7 of 48
Repair Overview
•
Update TCM software.
•
Perform road test and check for TCM faults
afterward.
•
Replace auxiliary hydraulic pump inside
gearbox only if specific faults set.
NOTE
•
These repair instructions may differ from the labor operations and labor times listed in ELSA.
•
Damages resulting from improper repair or failure to follow these work instructions are the dealer’s
responsibility and are not eligible for reimbursement under this action.
•
This procedure must be read in its entirety prior to performing the repair.
•
Due to variations in vehicle equipment and options, the steps/illustrations in this work procedure may not
identically match all affected vehicles.
•
Diagnosis and repair of pre-existing conditions in the vehicle are not covered under this action.
•
When working during extreme temperatures, it is recommended that the vehicle be allowed to acclimate
inside the shop to avoid temperature-related component damage/breakage.
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 8 of 48
Required Tools (software update)
Battery Tester/Charger
-VAS5908(or equivalent charger
with a current rating of at
least 70A)
Diagnostic Tester
-VAS6150X/VAS6160X(or equivalent)
Required Tools (auxiliary hydraulic pump replacement – if required)
NOTE: Refer to ELSA Repair Manual as needed for additional tools not listed here
Transmission Support
-3282-
Transmission Support
(or equivalent, -T40173for example)
-VW353-
Holding Plate
-VW309A-
Engine and Transmission
Holder
-VAS6095A-
Slide Hammer Set
Socket - 8mm
-VW771-
-T40276-
(or equivalent)
(or equivalent)
Socket And Extended Bit
-T10107A(or equivalent)
T-Handle Hook
-3438(or equivalent)
Qty. = 2
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 9 of 48
Puller - Unit Injector
Drive Axle Wedge Tool
-T10055-
-T10161-
Retaining Bar
Puller - Bevel Gear
-T10524-
-T10472-
Puller
Hose Clamps - Up To
25mm
-T10525-
-3094(or equivalent)
Engine Bung Set
Engine and Gearbox Jack
-VAS6122-
-VAS6931-
(or equivalent)
(or equivalent)
Pry lever
Socket - Xzn 14
-80-200-
-T10061-
(or equivalent)
(or equivalent)
Thrust Piece
-T10526-
Seal Installer - Bevel Box
-T10243(or equivalent)
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 10 of 48
Bearing Installer - Bearing
Press Piece
-VW207C-
Counter Support (Kukko
22/1)
- VAS251621(or equivalent)
Internal Puller
Circlip Pliers
-VAS251635-
-VAS5503A-
(or equivalent)
(or equivalent)
Guide Pins – Gearbox
-T40288-
Insert Tool - 18mm
-T10179(or equivalent)
Engine Support Set
-10-222B(or equivalent)
Thrust Piece
-T10457(or equivalent)
Transmission Support Mounting Plate 49
-3282/49(or equivalent)
Transmission Support Pins 29
-3282/29(or equivalent)
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 11 of 48
Repair Instruction
Section A - Check for Previous Repair
•
Enter the VIN in Elsa and proceed to the
“Campaign/Action” screen.
TIP
On the date of repair, print this screen and keep a
copy with the repair order.
•
Confirm the Campaign/Action is open . If the status is closed, no further work is
required.
•
Note the Applicable Criteria ID for use
in determining the correct work to be done and
corresponding parts associated.
CRITICAL REPAIR STEP
STOP!
If multiple software update Campaign/Actions are
open, they must be performed in order of the Start
date . The oldest should be performed
first.
•
All Safety Recalls must be completed prior to
completing this campaign.
•
Proceed to Section B.
NOTE
If the transmission was replaced on a previous service (after 10-01-2018), this work does not have to be performed.
Contact Volkswagen Warranty if there was a previous transmission replacement.
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 12 of 48
Section B – Update TCM Software
NOTE
Prior to launching the VAS Diagnostic Tester and starting an update, ensure the following conditions are
met;
The ODIS software is completely up to date.
Refer to the “Alerts” section on ServiceNet home page for the current ODIS version.
The battery charger is connected to the vehicle battery and remains connected for the duration of
the software update.
•
Battery voltage must remain above 12.5 volts for the duration of the software update. Failure to
do so may cause the update to fail, which could result in damage to the control module. Control
modules damaged by insufficient voltage will not be covered.
The screen saver and power saving settings are off.
•
Failure to do so may result in the tester entering power save mode during the software update,
which could result in damage to the control module.
The VAS Diagnostic Tester is plugged in using the supplied power adapters.
•
Under no circumstances should the tester be used on battery power alone during the software
update. Failure to do so may result in the tester powering off during the update, which could
result in damage to the control module.
The VAS Diagnostics Interface MUST ONLY be connected to the tester with a USB cable.
•
Performing a software update using a Bluetooth or WiFi connection increases the risk of losing
connection during the update, which could result in damage to the control module.
It also greatly increases the time required to perform the update. Requests for additional time
or parts will be denied if the GFF log shows the update was performed using Bluetooth or WiFi.
WARNING
Radiator Fan(s) may cycle ON high speed during the Update Process! There is a serious risk that personal injury
may result if contact is made with spinning fan blades. Keep hands and all objects away from Radiator Fan(s) during
Update Process!
TIP
To Update-Programming using SVM, review and follow instructions in Technical Bulletin 2014603: Software
Version Management (SVM) Operating Instructions.
The SVM Process must be completed in its entirety so the database receives the update confirmation response. A
warranty claim may not be reimbursed if there is no confirmation response to support the claim.
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 13 of 48
NOTE
•
Damages resulting from improper repair or failure to follow these work instructions are the dealer’s
responsibility and are not eligible for reimbursement under this action.
•
Diagnosis and repair of pre-existing conditions in the vehicle are not covered under this action.
NOTE
•
All campaign software updates must be completed during a single, standalone ODIS Diagnostic Session.
You must fully complete this campaign and send all logs before beginning any other campaigns or
operations.
•
If there are any ODIS “Hot-Fix” patches installed, they must be removed from the scan tool before beginning
this operation. ODIS “Hot-Fix” patches may affect the update process.
•
Open the hood.
•
Open the battery cover.
•
Switch the ignition on.
•
Apply the parking brake.
•
Switch off all consumers (headlights, heated
seats, climate control, etc.).
•
Connect the VAS6150X/VAS6160X Diagnostic
Tester to the vehicle.
•
Start the ODIS program.
•
Attach the battery charger to the vehicle battery.
NOTE
Vehicles with Battery Monitoring Control Module
-J367- and/or an EFB Battery:
When connecting the charger to the battery, connect
the positive cable to the positive terminal of the
battery and connect the negative cable to the
grounding lug on the chassis. DO NOT connect the
ground cable directly to negative terminal of the
battery.
•
Turn the hazards on.
CAUTION
The procedure may cancel itself if the hazard warning
lights are not switched on. The hazard warning lights
prevent the system from switching to bus sleep mode
during the update.
The repair information in this document is intended for use only by skilled technicians who have the proper tools, equipment and training to correctly and safely maintain your vehicle. These
procedures are not intended to be attempted by “do-it-yourselfers,” and you should not assume this document applies to your vehicle, or that your vehicle has the condition described. To
determine whether this information applies, contact an authorized Volkswagen dealer. 2023 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
34K1 Page 14 of 48
•
Confirm that scan tool is communicating with the
diagnostic head by USB .
o
If the Bluetooth symbol is shown then disconnect the diagnostic
head from the vehicle and reconnect the
USB cable to the diagnostic head and
then reattach to the vehicle.
•
Upon ODIS startup, verify the “Diagnosis”
operating mode is selected .
•
Once the GFF scan is complete, select “Special
functions” , then “Adapting software”
, then select “Perform test” .
•
Select the correct option to “Update software via
action code” OR “Software update via measured
code”.
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If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
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TSB/Document ID: Circ34K1_REV1
Replacement Service Bulletin Number:
MFR Communication Date: 2023-11-03
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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