A4623402069078_1

Technical Service Bulletin
46 Zirconium inserts in brake piston (ceramic brakes only)
46 23 40 2069078/1 January 5, 2023.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi Models
2006 – 2023
All
Ceramic Brakes
Condition
Customer states:
• No customer concerns, it is found during diagnostic work.
Workshop findings:
•
When working on the brake calipers (when replacing the brake pads), it is noticed that the zirconium inserts
are not firmly attached to the brake piston. The zirconium inserts are loose (can be turned/moved).
Technical Background
To prevent the brake pads’ high temperatures from being transferred to the brake piston and thereby also to the
seals and brake fluid, insulators known as zirconium inserts are used on the ceramic brake system. (Figure 1 item A).
Figure 1: Zirconium inserts for the ceramic brake system.
© 2023 Audi of America, Inc.
Page 1 of 2
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
Production Solution
Not applicable.
Service
• Fit zirconium insert back into brake piston.
• It is neither necessary nor justified to replace the brake caliper.
• The brake system’s functions are not affected.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
All part and service references provided in this TSB (2069078) 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.
©2023 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.
© 2023 Audi of America, Inc.
Page 2 of 2
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.