34 Oil leak from the ATF sump area
34 18 29 2050215/2 February 16, 2018. Supersedes Technical Service Bulletin Group 34 number 18-27 dated
January 30, 2018 for reasons listed below.
Model(s)

Year

A4 allroad

2017

VIN Range

Vehicle-Specific Equipment

N000001 - N044921
0CK, 0CL, and 0CJ Transmissions

Or
A000001 - A089798

A5

2017

All

0CK, 0CL, and 0CJ Transmissions

A5, A5
Cabriolet,
and A5
Sportback

2018

000001 - 005035

0CK, 0CL, and 0CJ Transmissions

A6

2016

All

0CK, 0CL, and 0CJ Transmissions

A6

2017

000001 – 062073

0CK, 0CL, and 0CJ Transmissions

Q5

2018

000001 – 004987

0CK, 0CL, and 0CJ Transmissions

Condition
REVISION HISTORY
Revision

Date

Purpose

2

-

Revised header data (Added models and updated VIN breaks)
Revised Service (Note added to contact Audi Technical Assistance for repairs
that require Authorization)
Revised Warranty (Updated time units for Noise dampening pan remove +
reinstall in Warranty Table 1)

1

01/30/2018

Initial publication

Customer statement:
 Oil leaking from vehicle.
Workshop findings:
 Oil leak found in the ATF sump area.

Page 1 of 7
© 2018 Audi 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 Audi 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.

Technical Background
Not applicable.

Production Solution
Improved assembly procedure.

Service
If the reported oil leak appears to be from the ATF sump area proceed with diagnosis and repair as follows:
1. Take photos of the actual condition and attach to the Repair Order.
2. Retighten the ATF sump bolts
with a torque of 5 Nm. Make
sure to follow the correct
tightening sequence (Figure
1).

Figure 1. Tightening sequence.
3. Clean the sump and transmission thoroughly with brake clean and make sure the transmission and sump are
dry before proceeding.

Page 2 of 7
© 2018 Audi 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 Audi 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.

4. Apply oil leak detection spray (Part # G 001
900 A1 or a locally available talcum based
oil leak detection spray equivalent) to the
sealing area of the sump, ATF cooler, drain
plug, and the case half seam (Figure 2).

Figure 2: Transmission with oil leak detection spray applied.
5. Test drive the vehicle and reassess the oil leak after the test drive.
6. If there is no further leaking the condition is repaired. Use Claim Warranty Table 1 for this repair.
Tip: If there are drips after the test drive as shown
(Figure 3) you should be able to determine if the leak is from
the ATF sump gasket or if the leak is from elsewhere. Make
sure to check for leaks above the sump gasket. Check the
seam of the transmission case split and the weep hole of the
double seal (Figure 4). Both of these leaks can be confused
for an ATF sump gasket leak.

Figure 3.Oil leak.

Page 3 of 7
© 2018 Audi 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 Audi 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.

Figure 4. Double seal weep hole location.
Tip: If the ATF sump has been diagnosed to be leaking after the all the above checks, replace the ATF
sump according to the Repair Manual and recheck for leaks. Use Warranty Table 2 if the ATF sump is replaced.
If the repair manual is followed using the special tools, the required wheel alignment should not be necessary.
Note:
If the oil leak is not from the ATF sump gasket please open an Audi Technical Assistance contact with the
pictures of the leak attached to the ticket and contact Audi Technical Assistance for repair authorization.

Warranty
Warranty Table 1 (Retightening bolts repaired oil leak)
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.

Service Number:

3756

Damage Code:

0050

Labor Operations:

Noise dampening pan remove + reinstall

1082 9999

50 TU

Page 4 of 7
© 2018 Audi 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 Audi 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.

Diagnostic Time:

Claim Comment:

Retighten Mechatronics Cover Bolts

3460 1399

10 TU

Clean gearbox and apply talcum spray

3435 2999

30 TU

Check gearbox housing for leaks (incl. photos) 3435 0199

40 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max 40
TU)

Road test prior to service procedure

0121 0002

10 TU

Road test after service procedure

0121 0004

10 TU

As per TSB #2050215/2

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.
Warranty Table 2 (ATF Sump replacement repaired oil leak)
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.

Service Number:

3460

Damage Code:

0010

Labor Operations:

All Models:
Noise dampening pan remove + reinstall

1082 9999

50 TU

Retighten Mechatronics Cover Bolts

3460 1399

10 TU

Clean gearbox and apply talcum spray

3435 2999

30 TU

Check gearbox housing for leaks (incl.
photos)

3435 0199

40 TU

3460 1900

330 TU

A4, A5, and Q5:
Remove and install mechatronic unit cover
A6:

Page 5 of 7
© 2018 Audi 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 Audi 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.

Diagnostic Time:

Claim Comment:

Remove and install mechatronic unit cover

3460 1903

190 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max 40
TU)

Road test prior to service procedure

0121 0002

10 TU

Road test after service procedure

0121 0004

10 TU

As per TSB #2050215/2

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.

Required Parts and Tools
Special Tools for Mechatronics Cover Replacement:
 T10552 Rear Axle Support
 T40043 Ball Joint Puller
 T40335 Strut
 T40334 Locating Pin
 T40386 Mount
 VAS6931 Engine and Gearbox Jack or equivalent
 VAG1331 Torque Wrench 1331 5-50Nm or equivalent

Part Number

Part Description

Quantity

G 001 900 A1

Oil leak detection spray (or equivalent)

Shop Supply

G 055 529 A2

Dual Clutch Gearbox Oil (ATF)

3.5 max

Parts below are only used if the Transmission Oil Sump requires replacement
Part Number

Part Description

Quantity

0CK 321 359 K

Transmission Oil Sump

1 (If needed)

0CK 325 107 F

Tube

1

Page 6 of 7
© 2018 Audi 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 Audi 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.

Additional Information
All parts and service references provided in this TSB (2050215) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information. Please check the Repair
Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2018 Audi 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
Audi 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.

Page 7 of 7
© 2018 Audi 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 Audi 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.