A351833 2028085-

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).
Page 1 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.
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.
Page 2 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.
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.
Page 3 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.
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).
Page 4 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.
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
Page 5 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.
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.