A8724722063467_6

Technical Service Bulletin
87 Noise from the air conditioning compressor when the AC is active
87 24 72 2063467/6 April 18, 2024. Supersedes Technical Service Bulletin Group 87 number 23-49 dated August
9, 2023 for reasons listed below.
Model(s)
Year
e-tron quattro
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
2019
2021 - 2023
e-tron Sportback
quattro
2020 - 2023
Q8 e-tron, SQ8
e-tron, Q8 e-tron
Sportback, and
SQ8 e-tron
Sportback
2024
Condition
REVISION HISTORY
Revision
Date
Purpose
6
-
Revised Warranty (Updated SRT)
5
08/09/2023
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)
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
The source of this noise may be due to direct contacft between adjacent refrigerant lines (Figure 1) or between a
refridgerant line and the Bowden cable clip for the front hood release in the front motor compartment (Figure 2).
© 2024 Audi of America, Inc.
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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
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.
Figure 2. Location of the Bowden cable clip
for the front hood release.
Production Solution
Not applicable.
Service
© 2024 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.
© 2024 Audi of America, Inc.
Internal
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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.
Figure 4 shows a closeup 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 tiewrap (Figure 5).
Figure 5. The area in the motor bay where contacting lines
are located.
4.
Figure 6 shows properly
separated refrigerant
lines.
© 2024 Audi of America, Inc.
Internal
Figure 6. Refrigerant lines retained in a separated position.
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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
5.
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.
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.
© 2024 Audi of America, Inc.
Internal
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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
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 Figure 9. Poorly seated compressor isolator / spring
poorly seated isolator
assembly.
showing a gap between
the rubber isolator and
the mounting bracket.
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.
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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
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.
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.
© 2024 Audi of America, Inc.
Internal
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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
• 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 and coolant
lines and secure if necessary.
8744 1399
70 TU
GFF
No allowance
0 TU
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
Correct position of compressor isolator
assemblies if necessary.
Diagnostic Time:
Claim Comment:
As per TSB 2063467/6
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 (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.
©2024 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.
© 2024 Audi of America, Inc.
Internal
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.