35 Leaks from transmission
35 18 33 2028085/6 July 30, 2018. Supersedes Technical Service Bulletin Group 35 number 15-18 dated
September 18, 2015 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

S4, S5, S5
Cabriolet,
RS5, S6,
and S7

2010 - 2016

All

0B5 S-Tronic transmission

Condition
REVISION HISTORY
Revision

Date

Purpose

6

-

Revised Warranty (Added Claim Types)
Revised Required Parts and Tools (Updated Final Drive Oil Part Number)

5

06/18/2015

Revised header data (Added models and model years)

4

06/18/2013

Revised header data (Updated customer codes)

Customer states:
 There is oil leaking under the vehicle.

Technical Background
There are a number of possible sources for the leak, including:
 Leaking from the oil pan seal (Figure 1).

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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 1. Leak on the oil pan seal (red arrows).
 Crack in the oil pan (Figure 2).

Figure 2. Crack in the oil pan.
 Leak between gearbox housing and intermediate
housing (Figure 3).
Tip: The source of the leak may be confused with oring of drain plug.

Figure 3. Leak between gearbox housing and
intermediate housing.

Production Solution
Not applicable.

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© 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.

Service
1. Locate the leak by first thoroughly cleaning
and drying the stained area. Then, apply
talcum spray (or similar) to the area that was
stained with oil (Figure 4).

Figure 4. Leak located with talcum spray.
2. Warm up the vehicle with a test drive then re-check for leaks.

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© 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.

3. If the leak is around the oil pan, remove the oil
pan and check the gasket for imperfections or
damage:
 If the oil pan is undamaged, replace only
the oil pan seal.
 If the oil pan is damaged (Figure 5), check
the mechatronics for loose bolts (Figure 6).
Replace any loose bolts and torque
according to the repair manual instructions.
Replace both the oil pan and seal.
 If pan is cracked (Figure 2, above) and no
loose bolts on the mechatronics unit are
found, replace oil pan and seal.
 If there is a leak between gearbox housing
and intermediate housing (Figure 3,
above), reseal the case by following
instructions in Elsa to complete the repair
at Repair Manual, Transmission >> S
Tronic Transmission Internal Components
>>35 Gears, Shafts >> Removal and
Installation >> Sensor Module with
Transmission Input Speed Sensor -G612-, G632-, -G676- and Circuit Board 3.
Note:
These instructions require transmission
case disassembly. Audi Academy course
#950224 and assessment #950224B must Figure 5. Damaged oil sump because of loose bolts.
be completed before the repair is attempted
or the warranty claim may be denied. The
course and assessment can be found on
the Audi Academy CRC site.
Tip: Use caution when lifting or
lowering intermediate housing to avoid
damage to components (Figure 7).

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© 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 6. Loose bolts in the mechatronics.

Figure 7. Caution points: drip tray Sensor module
connector.
4. Assemble according to the repair manual and check/correct the oil level.

Warranty
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:

3435

Damage Code:

0050

Labor Operations:

For leaking around pan:
Inspect pan and gasket

3460 1999

10 TU

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© 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.

For faulty pan gasket (no pan damage):
Mechatronics cover remove + reinstall

3460 1900

160 TU

For pan damage:
Inspect mechatronics bolts (replace and re-torque 3511 1999
if needed)

30 TU

Mechatronics cover remove + reinstall

3460 1900

160 TU

Transmission remove + reinstall

3435 19XX

See ELSA

Sensor module f trans remove + reinstall

3512 1950

570 TU

Clean off oil and determine leak origin (includes
one test drive)

3435 9999

90 TU

For leaking case:

Diagnostic Time:

Claim Comment:

GFF to perform basic setting and adaptation (after 0150 0000
sensor replacement only)

Time stated on
diagnostic
protocol (Max
100 TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

0121 0004

10 TU

As per TSB 2028085/6

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
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

0B5321361C

Transmission pan (only if cracked/damaged)

01

0B5321371E

Gasket for transmission pan

01

N 10405702

Bolts for mechatronics unit

06

See ETKA

Fasteners, Bolts, Nuts and Screws as needed per the Repair Manual See ETKA/ELSA

Page 6 of 8
© 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.

G052529A2

Dual clutch gearbox oil (ATF)

Up to 7.5 Liters

Additional parts needed for case leak reseal:
Part Number

Part Description

Quantity

G052513A2

Final drive oil (MTF) >> MY 2011 Order to VIN in ETKA

G055532A2

Final drive oil (MTF) MY 2012 >> Order to VIN in ETKA

0B5927321F

Module

01

0B5321391A

Harness

01

AMV18800102

Sealing paste

01

0B5301515H

Pump with seals

01

WHT001955

Bolt

01

WHT002459

Bolt

28

WHT001958B

Bolt

02

0B5301227C

Seal kit

01

0B5323525B

O-ring

01

0B5311113F

Seal

01

0B5315105TC

Oil pipe with seals

01

0B5315105TA

Oil pipe with seals

01

0B5325571

Sleeve with seals

01

0B5311944B

Seal

04

0B5321473

Oil pipe

01

WHT003380

Seal

01

WHT003379

Seal

01

0B5301311E

Oil drip tray (Replace if broken)

01

See ETKA

Fasteners, Bolts, Nuts and Screws as needed per the Repair Manual See ETKA/ELSA

5.0 Liters

Page 7 of 8
© 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 (2028085) are subject to change and/or removal.
©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 8 of 8
© 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.