Technical Service Bulletin
39 Gearbox: droning noises/vibrations in tight corners, vehicles with PR number GH4 (quattro with ultra
technology)
39 24 76 2075681/2 December 3, 2024. Supersedes Technical Service Bulletin Group 39 number 24-75 dated
October 21, 2024 for reasons listed below.
Model(s)

Year

A4, and A4
allroad

2017 – 2025

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

S4, Q5, and SQ5 2019 – 2025
A6, and A7

2019 – 2025

A5, A5 Cabriolet,
A5 Sportback,
S5, S5 Cabriolet, 2019 – 2025
and S5
Sportback
RS 5, and RS 5
Sportback
A6 allroad, S6,
S7, and Q5 e
quattro

2019
2021 – 2024
2020 – 2025

RS 6 Avant, RS
7, Q5 Sportback,
2021 – 2025
and SQ5
Sportback
A7 e quattro

2021 - 2022

Condition
REVISION HISTORY
Revision

Date

Purpose

2

-

Revised Service (Adjusted measure description)

1

10/21/2024

Initial publication

Customer States:
•

There are audible noises from the drive train (gearbox, drive shaft and/or rear final drive) when pulling away
quickly from a standstill with the wheels turned.

and/or
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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 Service Bulletin
•

Vibrations, humming, droning, or rubbing can be heard and/or felt in the vehicle interior and/or on the rear
seats when the steering wheel is turned to full lock.

Workshop findings:
•

The customer statement can be reproduced.

Technical Background 1
The friction system of the four-wheel drive clutch may change slightly over a long period of time when the
proportion of all-wheel drive use is very low. The following procedure can be used to resolve the customer
complaint.

Production Solution
Not applicable.

Service
Try to reproduce the customer complaint (based on the description/workshop findings/event memory entries), so
that it can be clearly assigned to this TSB. The following repair must only be carried out if all the criteria
(model/type, chassis number, engine/gearbox code, PR number(s), part number, software version, code etc.)
apply exactly. Otherwise, this measure will not eliminate the problem, and repeat repairs may be necessary. In
such a case, we may reject the warranty claim and charge back the cost of the parts.

To ensure the noise/complaint can be clearly assigned, please scan the QR Codes below (Figures 1 and
2) and refer to the videos below.

Figure 1. https://audiexternal.

Figure 2. https://audiexternal.

kzoplatform.com/player/medium/278731658787763558 kzoplatform.com/player/medium/278732250439641256
2
7
If the complaint is confirmed, proceed as follows:
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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 Service Bulletin
Using application programs while driving can distract the driver from the road.
• If the driver is distracted, this can lead to accidents and injuries.
• Observe the road traffic regulations. They have priority over any driving instructions.
• Always perform the program with a second person who operates the test equipment.
• Make sure that test equipment in the vehicle does not distract the driver.

Danger due to the transportation of unsecured test equipment. If test equipment if transported
unsecured or in the range of airbags, this could cause injuries in certain maneuvers or in the event of
an accident.
• Make sure that the test equipment is secured properly.
• Do not transport test equipment in areas in which airbags inflate.
• If possible, use test equipment on the rear seat bench. If there is no rear seat bench, keep test
equipment flat on the passenger’s lap. The passenger must operate the equipment. Move the
passenger seat as far back as possible.

To perform this work, you will need a suitable area on which it is possible to drive in circles safely. The
requirements are the same as those which apply to the system function test for the all-wheel drive
system. A second person must assist in operating the ODIS tester during the road test.

1. Drive the vehicle to a cordoned-off area or to an area where it is safe to drive with the steering wheel at full
lock. When driving in circles, no other traffic should be present or authorized in this area.
2. Once the vehicle has reached operating temperature, it can be parked in this area.
3. Connect the ODIS tester and expand the test plan by entering the reference number 2074883. Add the
suggested test program -0022 – Function test of clutch for frictional vibration – to the test plan. Do not search
for the test plan via “Select self test.” Refer to the attached “TestPlanAssignment.pdf” for detailed
instructions.
a) The corresponding program “0022 - Function test of clutch for frictional vibration” is only available if the
test plan has been expanded by entering reference number 2074883 in the TSB tab in the center of the
screen.
b) Open the window for entering the reference number via the TSB tab.
c) Close the window after entering the reference number.

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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 Service Bulletin
d) After selecting “Expand test plan”, the program “0022 - Function test of clutch for frictional vibration” will
be available in the test plan.
4. Start the test -0022 – Function test of clutch for frictional vibration –. ==> Select -1- Target torque 150 Nm
and perform the test program.
5. Let the engine idle and apply the brakes. At full steering lock, release the brakes and slowly increase the
speed up to max 10 km/h (6 mph). Keep driving in circles at a maximum speed of 10 km/h (6 mph) until the
yellow warning lamp “Four-wheel drive overheating” lights up and test mode is ended automatically. This
procedure can take several minutes and may need to be repeated to trigger the warning lamp.
6. Once the event memory entry “C05DC00 4WD/AWD Clutch Temperature Too High” logged in the all-wheel
drive electronics is erased the procedure is complete. Please provide the complete diagnostic log online.

If a speed of 11 km/h (~7 mph) is exceeded, the test will be automatically aborted. In this case, the
frictional vibration test will need to be restarted.

Warranty
Claim Type:

•

Service Number:

3960

Damage Code:

0020

Labor Operations:

Measure all-wheel drive clutch unit (fourwheel drive overheating)

3960 0399

30 TU

GFF

0150 0060

Time stated on the
diagnostic protocol

Road test prior to the service procedure

0121 0002

10 TU

Road test after the service procedure

0121 0004

10 TU

Charge battery

2706 8950

See SRT with
associated
operations

Claim Comment:

If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

As per TSB 2075681/2

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.

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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 Service Bulletin
Additional Information
All part and service references provided in this TSB (2075681) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2024 Audi of America, Inc. All rights reserved. The 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.

© 2024 Audi of America, Inc.
Internal

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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.