Service Action
Code: 24TT
Subject
Document History

Affected Vehicles

Engine Control Module (ECM) Software

Date
04/16/2026

Country
USA
CAN

Summary
Original publication

Beginning
Model Year
2026
2026

Ending
Model Year
2026
2026

Vehicle

Vehicle Count

TIGUAN
TIGUAN

8,245
7,543

Check Campaigns/Actions screen in ELSA on the day of repair to verify that a VIN qualifies for repair under this
action. ELSA is the only valid campaign inquiry & verification source.

About this Service
Action
Code Visibility



Campaign status must show “open.”



If ELSA shows other open action(s), inform your customer so that the work can also be completed at
the same time the vehicle is in the workshop for this campaign.

Under this service action, updated engine control module (ECM) software will be installed to
provide robustness improvements to the ECM calibration for the turbocharger variable turbine
geometry (VTG) actuator endpoints. This has no impact on vehicle emissions.
On or about April 16, 2026, the campaign code will be applied to affected vehicles.

Owner Notification

Owner notification will take place in April 2026. Owner letter examples are included in this
bulletin for your reference.

Campaign Expiration
Date

This campaign expires on April 21, 2031. Work must be performed on or before this date to be
eligible for payment. Keep this expiration date in mind when scheduling customers for this
action. If a customer wishes to have this work performed after the expiration date, your normal
parts and labor cost associated with this work will apply.

Additional Information

Please alert everyone in your dealership about this action, including Sales, Service, Parts
and Accounting personnel. Contact Warranty if you have any questions.
Dealers must ensure that every affected inventory vehicle has this campaign completed before
delivery to consumers.

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. 2026 Volkswagen Group of America, Inc. and Volkswagen Canada. All Rights Reserved.
Form No. F_3.4_AHQ-GQO-CP-C_046 Rev. 12.0

24TT Page 1 of 7

Claim Entry Instructions
The labor times listed here may differ from the labor operations and labor times listed in ELSA.
After campaign has been completed, enter claim as soon as possible to help prevent work from being duplicated
elsewhere. Attach the ELSA screen print showing action open on the day of repair to the repair order.
If a customer declines campaign work, refer to the “Customer Declines Campaign/Update Repair” section in the
Campaign/Update Policy and Procedures Manual.
Service Number

24TT

Damage Code

0099

Parts Vendor Code

WWO

Claim Type

Sold vehicle: 7 10
Unsold vehicle: 7 90

Causal Indicator
Vehicle Wash/Loaner

Mark labor as causal
Do not claim wash/loaner under this action.
Loaner/rental coverage cannot be claimed under this action. However, loaner/rental
may be covered under the current loaner/mobility program. Please refer to the
Volkswagen Warranty Policy and Procedures Manual for loaner claims information and
reimbursement details.

Criteria I.D.

T1
Perform ECM software update

LABOR
Labor Op

Time Units

Description

0150 00 10

SEE ELSA

GFF/Guided Functions
(setup + battery charger)

0150 00 60

Time stated on
diagnostic protocol
(up to 50 TU)

GFF/Guided Functions
(software update)

NOTE: Only the time on the diagnostic protocol should be claimed under
LO 0150 00 60. Claims may be audited to ensure the time claimed matches the time
stated on the diagnostic protocol related to this repair.

24TT Page 2 of 7

Customer Letter Example (USA)
This notice applies to your vehicle: <MODEL YEAR> <BRAND> <CARLINE>, <VIN>
Subject: Service Action 24TT – Engine Control Module (ECM) 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 2026 model year Volkswagen vehicles. Our records show that you are the owner of a vehicle
affected by this action.
About this Service Action:
Under this service action, updated engine control module (ECM) software will be installed to provide robustness
improvements to the ECM calibration for the turbocharger variable turbine geometry (VTG) actuator endpoints. This has no
impact on vehicle emissions. This work will take about an hour to complete and will be performed for you free of charge.
Please keep in mind that your dealer may need additional time for the preparation of the work, as well as to accommodate
their daily workshop schedule.
What should you do?
Please contact your authorized Volkswagen dealer without delay to schedule this work. To set up an appointment online,
please visit www.vw.com/find-a-dealer.
Additional Information
•

This service action will be available for you free of charge only until April 21, 2031. If you wish to have this work
performed after that date, your dealer’s normal costs associated with this repair will apply.

•

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 your authorized Volkswagen dealer fails or is unable to complete this work free of charge within a reasonable
time, if you have changed your address or no longer own the vehicle identified in this letter, 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.

•

To check your vehicle’s eligibility for repair under this or any other recall/service campaign, please visit
www.vw.com/lookup and enter your Vehicle Identification Number (VIN) into the Recalls and Service Campaigns
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

24TT Page 3 of 7

Customer Letter Example (CANADA)
This notice applies to your vehicle: <MODEL YEAR> <BRAND> <CARLINE>, <VIN>
Subject: Service Action 24TT – Engine Control Module (ECM) 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 2026 model year Volkswagen vehicles. Our records show that you are the owner of a vehicle affected
by this action.
About this Service Action:
Under this service action, updated engine control module (ECM) software will be installed to provide robustness improvements
to the ECM calibration for the turbocharger variable turbine geometry (VTG) actuator endpoints. This has no impact on vehicle
emissions. This work will take about an hour to complete and will be performed for you free of charge. Please keep in mind
that your dealer may need additional time for the preparation of the work, as well as to accommodate their daily workshop
schedule.
What should you do?
Please contact your authorized Volkswagen dealer without delay to schedule this work.
Additional Information
•

This service action will be available for you free of charge only until April 21, 2031. If you wish to have this work
performed after that date, your dealer’s normal costs associated with this repair will apply.

•

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 your authorized Volkswagen dealer fails or is unable to complete this work free of charge within a reasonable time,
if you have changed your address or no longer own the vehicle identified in this letter, or if you should have any
questions about this communication, please contact Customer Relations, Monday through Friday from 8AM to 8PM
EST by phone at 1-800-822-8987 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

24TT Page 4 of 7

Required Tools

Battery Tester/Charger

Diagnostic Tester

-VAS5908-

-VAS6150D-

(or equivalent charger with
a current rating of at least
70A)

(or higher)

Repair Instruction
Section A - Check for Previous Repair
TIP
If Campaign Completion label is present, no further work is required.
•

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 <arrow
1>. If the status is closed, no further work is
required.

•

Note the Applicable Criteria ID <arrow 2> for
use in determining the correct work to be done
and corresponding parts associated.
CRITICAL REPAIR STEP

STOP!
All campaigns/actions with a repair available must
be performed in order of the Start date <arrow 3>.
The oldest should be performed first (unless
otherwise noted in the repair instructions).
Proceed to Section B.

24TT Page 5 of 7

Section B – Update ECM Software
NOTE
If the MIL is on and DTC P003A “Turbocharger/Supercharger Boost Control “A” Position Exceeded Learning Limit”
is stored in the ECM, this repair should be performed before any other diagnosis.
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 “Current ODIS Service Version” circular found in Elsa2Go Service References.

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 (or higher, if directed in the work instructions) 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.

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.

24TT Page 6 of 7

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.

IMPORTANT
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.
•

Switch off all consumers, air conditioning, heater blower motor, lights, heated seats, etc.

•

Connect battery charger.

•

Ensure the latest version of ODIS is downloaded.

•

Ensure diagnostic head is connected to ODIS tester via USB cable.

•

Move selector lever to P.

•

Use operating mode, DIAGNOSIS.

•

Select “SVM – Code Input”.

•

Enter SVM code 53C2 and follow the on-screen prompts.

•

Ensure the diagnostic log is sent to GFF Paperless after completion.

Work is complete
IMPORTANT
If the software update fails for any reason, ODIS feedback must be sent prior to further diagnosis. This ensures the
failure/error is reported. Failure to do so may result in non-payment of consequential requests for additional time or
parts.

24TT Page 7 of 7