A8723492063467_5

Technical Service Bulletin
87 Noise from the air conditioning compressor when the AC is active
87 23 49 2063467/5 August 9, 2023. Supersedes Technical Service Bulletin Group 87 number 22-31 dated
August 11, 2022, for reasons listed below.
Model(s)
e-tron quattro
Year
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
2019
2021 – 2023
e-tron Sportback
quattro
2020 - 2023
e-tron S quattro
2022 – 2023
Q8 e-tron, and
Q8 e-tron
Sportback
2024
Condition
REVISION HISTORY
Revision
Date
Purpose
5
-
Revised header (add model year 2024 Q8 e-tron)
4
08/12/2022
Revised Service (Additional inspection areas added)
Revised Warranty (Updated SRT)
Revised header (add Model Year 2023)
3
4/20/2022
Revised Technical Background (Additional problem location added)
Revised Service (Additional inspection areas added)
Revised Warranty (Correction of labor operation number)
Customer states:
• The customer describes a noise heard in the cabin when the air conditioning system is active particularly when
the air conditioning compressor is running. When the air conditioning system is turned off the noise is
eliminated.
Workshop findings:
This symptom is easily reproduced. Further, the source of the noise is confirmed as not emanating from inside the
cabin.
Technical Background
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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 source of this noise may be due to direct
contact between adjacent refrigerant lines
(Figure 1) or between a refrigerant line and
the Bowden cable clip for the front hood
release in the front motor compartment
(Figure 2). When the air conditioning
compressor is operating the noise created by
the vibration is transferred from this point of
contact and into the cabin.
Figure 1. The refrigerant lines possibly make contact.
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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
Figure 2. Location of the Bowden cable clip for the front hood
release.
Production Solution
Not applicable.
Service
© 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
1.
Figure 3 shows refrigerant lines close
enough to make contact and elicit
vibration transfer and noise.
Figure 3. The refrigerant lines are making contact.
2.
Figure 4 shows a close-up view of
the point of contact.
Figure 4. Point of contact.
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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.
These refrigerant lines must be
separated and, if necessary, retained
in a separated position using a hose
holder, clip, or tie-wrap (Figure 5).
Figure 5. The area in the motor bay where contacting lines
are located.
4.
5.
Figure 6 shows properly separated
refrigerant lines.
Figure 6. Refrigerant lines retained in a separated position.
An additional point of contact may be
found between the refrigerant line
containing the service port and the
clip that retains the Bowden cable for
the front hood release. If contact is
found here these components must
be separated and secured in a
separated position. The retaining clip
for the refrigerant line allows the line
to slide within it. This is to be
considered when securing the line
away from the clip for the Bowden
cable.
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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
Figure 7. Point of contact between refrigerant line and
Bowden cable clip.
6.
Figure 8 shows an additional point of
contact possible at the coaxial
refrigerant line where it crosses the
refrigerant line containing the service
port. Again, separate and secure
these lines in a separated position.
Figure 8. Point of contact between coaxial refrigerant line and
the refrigerant line containing the service port.
7.
In some cases the compressor
isolator spring is not indexed
correctly in the rubber mounting
causing an incorrectly seated
compressor isolator
assembly. Inspect the isolator /
spring assembly for proper fit of the
spring to the isolator at the top and
bottom seating areas. Figure 9
shows a poorly seated isolator
showing a gap between the rubber
isolator and the mounting bracket.
Figure 9. Poorly seated compressor isolator / spring
assembly.
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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
8.
The spring and / or rubber mount
may need to be twisted to correct the
spring to rubber mount index allowing
the isolator assembly to lie flat
against the bracket. Figure 10 shows
a properly seated isolator / spring
assembly.
Figure 10. Correctly seated compressor isolator / spring
assembly.
9.
An additional possible point of line
contact is the service port mounting
block in Figure 11.
Figure 11. Service port mounting interference with adjacent
line.
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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
10 Correct this by pushing the service
.
port in the direction of the arrow with
just enough force to create a
permanent clearance as shown in
Figure 12.
Figure 12. Creating a permanent gap between the service
port mounting and the adjacent line.
Warranty
Claim Type:
• 110 up to 48 Months/50,000 Miles.
• G10 for CPO Covered Vehicles – Verify Owner.
• If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
8744
Damage Code:
0020
Labor Operations:
Front storage compartment remove and
reinstall
7007 1900
See SRT with
associated
operations
Separate contacting refrigerant lines and
secure if necessary
8744 1399
40 TU
GFF
No allowance
0 TU
Diagnostic Time:
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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
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
Claim Comment:
As per TSB 2063467/5
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
©2023 All part and service references provided in this TSB (2063467) 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.
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 9 of 9
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.