A8723562071621_1

Technical Service Bulletin
87 Rattle and / or knocking noises from the engine compartment
87 23 56 2071621/1 October 5, 2023.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
RS 3
2022 – 2024
All
Not Applicable
Condition
Customer states:
• A rattle or knocking type noise is heard in the engine compartment.
Workshop findings:
•
The noises can be duplicated with the engine running and either at a standstill while idling or driving slowly on
either smooth or rough pavement particularly when cornering.
Technical Background
A refrigerant line may be in contact with the right front longitudinal member.
Production Solution
Not applicable.
Service
1. Assess the right side area of the engine
compartment near the longitudinal member.
Figure 1. Area of the engine compartment to inspect
refrigerant line contact.
© 2023 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
2. Contact between the refrigerant line and the
longitudinal member is identifiable visually.
Figure 2. Refrigerant line in contact with longitudinal
member.
© 2023 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
3. Figure 3 shows this contact at a different
angle.
Figure 3. Alternative view of refrigerant line contact
with longitudinal member.
4. Create at least a 1.5 cm gap between the refrigerant line and the longitudinal member. It should be
possible to move the line away from the longitudinal member by carefully bending it slightly. If
necessary, secure the line with a tie wrap.
Warranty
Claim Type:
• 110 Up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Service Number: 8743
Damage Code:
0020
Labor
Operations:
Modify refrigerant line routing
© 2023 Audi of America, Inc.
8743 0599
30 TU
Page 3 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.
Technical Service Bulletin
Diagnostic Time: 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
Claim Comment: As per TSB 2071621/1
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.
Additional Information
All part and service references provided in this TSB (2071621) 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 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.