2638
2532
1935
1624
1522
1311
0833
0442
0605
0511
05E.906.013.C

3120

s

a

2636
2531
1936
1795
1546
1308
0836
0636

05E.906.013.F

3121
2639
2533
1937
1547
1309
0835
0637

Jetta

1.5T

05E.906.013.A

DNKA

3133

05E.906.013.A

3307

4CB9

05E.906.013.D

3310

4CB9

05E.906.013

3306

4CB9

2634
2527
2426
2304
2150
1930
1288
0948
05E.906.013.D

3132
2637
2528
2425
2305
1929
1289
0963

05E.906.013

3131
2633
2526
2424
2303
1927
1287
0947

The procedure can be found in GFF under Functions/ Component Selection, Software Version Management,
Adapting Software.
Ensure attached ECM/TCM Tuning Form has been completed and signed by customer as required in SVM
Technical Bulletin Instance 2014603.

CAUTION
Only perform the below tank integrity test in self-diagnosis mode if the above software update was
completed during this diagnostic session. Otherwise, follow the test plan populated by the tester for DTC

P0456 within Guided Fault Finding.
STEP 3: Perform tank integrity test:
Under the Self-diagnosis tab: 0001 – Engine Electronics > Control module OBD > Basic setting > Fuel tank
integrity test > Add measured values IDE 07257 “tank pressure from leakage diagnosis, calculated” and IDE
05622 “Status of tank leak diagnosis with electrical diagnostic pump” > Start test.

The Test may take up to 15 minutes to complete. After starting test, status should change to “routine active”.

If routine or test plan ends successfully with “correct result” and software update was not required, this TSB
does not apply.
If routine or test plan ends successfully with “incorrect result” proceed to Step 4.

STEP 4: Inspect, and if necessary, replace purge line with -N80Focus special attention to the area circled in Figure 1.
Figure 1:

Figure 2 highlights two sections of the purge line from figure 1 that are prone to cracking.
Figure 2:

If a leak is found from the corrugated purge line (shown above) remove and replace the component.
If a leak is not identified from the corrugated purge line, further diagnosis is required. In this case, this TSB
no longer applies.

Warranty
To determine if this procedure is covered under Warranty, always refer to the Warranty Policies and
Procedures Manual 1)
Model(s)

Year(s)

Eng. Code(s)

Trans. Code(s)

VIN Range
From

VIN Range To

Taos

2022- 2024

1.5T

All

All

All

All

All

(DNKA)
Jetta

2022- 2024

1.5T
(DNKA)

All

SAGA Coding
Claim Type:

Service Number:

2024
(If ACF valve is replaced)
2470

Use applicable Claim Type 1)
Damage
Code

0050

HST

Damage Location
(Depends on Service
No.)

--

--

(If SVM update was
performed without ACF
valve replacement)

0039

--

Parts Manufacturer

Taos / Jetta

--

3ME 2)
DKN (If ACF valve is replaced)

Labor Operation 3) : Charge Battery

27068950 = See Elsa for latest time units

Labor Operation 3) : GFF and tank integrity test

20105599 = 25 TU

Labor Operation 3) : Update Programming Engine
/Motor Control Module -J623-

24705599 = 50 TU

(Only if SVM update is required)
Labor Operation 3) : ACF valve remove+reinstall

20241945 = See ELSA for latest time units

(Only if ACF valve is replaced)
Causal Part:

05E133366BK

(If ACF valve is replaced)
Causal Part:

24705599

(If SVM update was performed without ACF valve
replacement)
Causal Part:

20105599

(If SVM update was not performed and ACF valve
was not replaced)
Diagnostic Time 4)
GFF Time expenditure

01500060 = 00 TU

NO

Road Test

01210004 = 10 TU

YES

Technical Diagnosis

01320000 = 00 TU

NO

Claim Comment: Input “As per Technical Bulletin 2078397” in comment section of Warranty Claim.
1)

Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only.

2)

Code per warranty vendor code policy.

3)

Labor Time Units (TUs) are subject to change with ELSA updates.

4)

Documentation required per Warranty Policies and Procedures Manual.

Required Parts and Tools

No Special Parts required.

Tool Description

Tool No:

Midtronics Battery Tester/Charger

GRX3000VAS
or
MTRMSP0702 battery maintainer/charger

VAS Diagnostic Tool

VAS 6150/X & VAS 6160/X and
ODIS Service with current online updates

Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
© 2025 Volkswagen Group of America, Inc. All rights reserved. Information contained in this document is
based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors.
All rights are reserved to make changes at any time without notice. No part of this document may be
reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites,
without the prior expressed written permission of the publisher.

OWNER INFORMATION ABOUT CONTROL MODULE TUNING*
ACKNOWLEDGEMENT AND AUTHORIZATION FOR
REPROGRAMMING (REFLASHING) OF CONTROL MODULE(S)
*) “TUNING” is described as the addition of or modification of any component which causes a
Volkswagen vehicle to perform outside the normal parameters and specifications approved by
Volkswagen Group of America / Volkswagen Group Canada.

Date:
Dealer Number:
Vehicle Identification Number:
Repair Order Number:
Dealer stamp

I

, owner or driver of the above identified Volkswagen, confirm:

- “Tuning” as described above (especially power increasing modifications) has NOT been
performed on my vehicle.
- “Tuning” as described above has been performed on my vehicle and the following components
were modified or installed:

TUNING was performed by (Please provide Company name and telephone number, if you wish us
to contact them):

I understand that if my Control Module is determined to have been tuned, any damage caused by
the tuning of the Control Module (including adverse emissions consequences) will not be covered
by VWGoA / VGC warranties.
I am permitting an authorized Volkswagen Dealer to reflash (update) my Control Module, and by
doing so, I understand that this process will automatically overwrite (destroy) and permanently
delete any tuning program that was previously installed on the Control Module of my Volkswagen
vehicle.
By signing below, I fully acknowledge and understand that the tuning program will not be restored
and VWGoA / VGC, will not be liable in any way for the loss of tuning data.

Signature of Customer
E

2025 Volkswagen Group of America Inc.

All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright
intellectual property
rights of VGoA / VGCA Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or
other
and
by any means, .electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.