Technical Service Bulletin
44 Vibrations and rotational steering wheel vibrations
44 24 06 2074846/1 August 9, 2024.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

All Audi Vehicles 2000 – 2025

Condition
Customer states:
Vibrations at 35 - 70 mph. Vehicle occupants may notice the vibrations in the seat surface, the vehicle floor,
the footwell, the pedal cluster or the steering wheel. The vibrations may be stronger when braking or
accelerating or only occur in these phases.

Technical Background 1
Radial force variation:
Due to the characteristics of their construction and production, tires have softer and stiffer areas in radial
direction around their circumference. The change to the tire’s compression force is referred to as radial force
variation. To measure the radial force variation, the tire is turned while a constant force is applied to it using
the counter pressure roller of vibration control system VAS6230(A). This simulates the rolling of the tire on
the road surface. The variation of the radial force does not depend on the direction of rotation and is
measured as the difference between the maximum and minimum radial force (peak to peak value). The
peak-to-peak value must be 120N or less.
The first harmonic vibration is the part of the radial force variation which causes the strongest vibrations. It
must be 80N or less.

Flat spots caused by storage:
Even after a short stationary period (a few hours) flat spots develop after the warm tire has cooled down.
This is more, or less pronounced depending on the type, dimension and make of the tire. Flat spots falsify
the radial force variation measurement. It is very important to drive them out prior to every wheel balancing
procedure.

© 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.

Technical Service Bulletin
Flat spots are normal and not faults covered under warranty.
Please also note the information on flat spots in the Workshop Manual > Wheels and tires/Flat spots

caused by storage or handling.

Production Solution
100% wheel balancing from week 01/2008.

Service
Please complete the following steps in the order specified:
1. Perform a test drive of up to 20 miles in various speed ranges (up to 65 mph).
2. Raise the vehicle immediately after the test drive so that the wheels are off the ground.
3. After removing the wheels, mount them on the vibration control system VAS6230(A).
4. Measure, balance and (if necessary) match the wheel according to the instructions given by the
equipment. Use the above reference values to do so.
5. Fit the wheels on the vehicle according to the instructions given by the Hunter equipment.
6. Restore the tire pressure required for the vehicle.
7. Assess the vehicle in the speed range where the complaints occurred.

If the first harmonic vibration of the radial force cannot be brought to the specified limit of
80N by matching, a new tire must be used.

When tightening the wheel on the vibration control system, make sure that the flange and wheel
contact surfaces are clean, that the wheel is correctly centered and that a suitable taper and
tensioning device is used. We recommend the use of a five-finger tensioning device.

Warranty
Claim Type:
© 2024 Audi of America, Inc.
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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
Service Number:

4440

Damage Code:

0013

Labor Operations:

1 wheel balanced

4405 9300

See SRT with
associated
operations

1 wheel matched

4405 9351

See SRT with
associated
operations

2/3/4 wheels balanced

4405 940x

See SRT with
associated
operations

2/3/4 wheels matched

4405 945x

See SRT with
associated
operations

Replace 1 tire

4440 5550

See SRT with
associated
operations

Replace 2/3/4 tires

4440 565x

See SRT with
associated
operations

Diagnostic Time:

Claim Comment:

GFF

No allowance

0 TU

Road test prior to the service procedure

0121 0002

10 TU

Road test after the service procedure

0121 0004

10 TU

As per TSB 2074846/1

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.

Only repairs on components which were part of the vehicle when it was delivered can be claimed under
warranty.

© 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.

Technical Service Bulletin
The VAS6230 logs for each wheel and the information sheets (as described above) must be marked with the
VIN number and attached to the warranty claim.

Required Parts and Tools
Tool Number

Tool Description

VAS 6230 (GSP9700)

Road Force Measurement System

VAS 6243

Clamping Plate

Additional Information
All part and service references provided in this TSB (2074846) 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

Page 4 of 4

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.