A4623452070679_1

Technical Service Bulletin
46 DTCs stored in the ABS control unit related to parking brake switch; C100C07, C100C29
46 23 45 2070679/1 June 20, 2023.
Model(s)
Year
All Audi Vehicles 2012 – 2025
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Condition
Customer states:
Parking brake malfunction warning in the cluster.
Workshop findings:
One or more of the following DTCs are stored in the ABS control unit address word (0003):
• C100C07 Electro-mechanical parking brake button mechanical malfunction.
• C100C29 Electro-mechanical parking brake button implausible signal.
Technical Background
The DTCs are stored when the corresponding switch is pressed and held for a short time. This can happen by
accident (for example: when pressing the parking brake switch while using the MMI). The switch can also get
stuck if a foreign object has entered the gap around the switch from outside.
Production Solution
Not Applicable
Service
Find out from the customer how they use the corresponding switch. If a DTC was caused due to the switch being
held down accidentally or getting stuck, replacing parts will not fix the problem.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
Page 1 of 2
© 2023 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
All part and service references provided in this TSB (2070679) 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.
Page 2 of 2
© 2023 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.