A401228 2031722-

Technical Service Bulletin
40 A3 - noises from front lower control arm mounting
40 12 28 2031722/1 December 19, 2012.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A3
2005 -2013
All
NA
Condition
Customer complaint:
Customer may report creaking and squeaking noises from front axle when driving at low temperatures on
rough/bumpy/uneven roads.
Workshop findings:
The customer complaint can be reproduced.
Technical Background
The sound comes from the rubber
and metal mounting of the front
track control arms. The rubber lip
of the rubber metal mounting rubs
on the collar of the control arm
(Figure 1, B). The resulting stickslip effect creates this sound,
which does not affect the service
life and function of the
components. This is a normal
condition.
Figure 1. Track control arm (A), and mounting bracket with bonded
rubber bushing (B).
Page 1 of 2
© 2012 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 Service Bulletin
Note: Track control arm bushings that are completely cracked through should be replaced.
Production Solution
Not applicable.
Service
Condition described in this TSB is considered normal and does not require repairs. Warranty claims for
replacement of components may be rejected.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Page 2 of 2
© 2012 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.