A8721192065450_1

Technical Service Bulletin
87 Noise from the air conditioning compressor when the AC is active
87 21 19 2065450/1 December 13, 2021.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
Q5 PHEV
TFSI e
2020 - 2021
All
Not Applicable
Condition
Customer states:
 The customer hears noises from the engine compartment when the air conditioning system is active. The
noises may also be described as emanating into the cabin space slightly as well. When the air conditioning
system is deactivated (A/C off) the noises no longer occur.
 These noises are particularly noticeable when the vehicle is in electric mode.
 The air conditioning system otherwise operates normally with no degradation of cabin cooling.
Workshop findings:
 The noises can be duplicated under the conditions described by the customer.
Technical Background
The noise heard by the customer in the vast majority of cases is a normal acoustic characteristic generated by the
air conditioning compressor and represents no technical issue with the compressor unit.
Production Solution
Not applicable.
Service
The following inspections of refrigerant circuit components should be performed for any possible issues:
1. Check the volume of refrigerant in the circuit. Ensure that it is within specifications.
2. Check the refrigerant lines and hoses that are visible for any contact with one another or an adjoining
component. Refrigerant lines in contact with one another can transmit vibrations throughout the engine
compartment and may manifest as noises into the cabin. Correct the refrigerant line positioning if necessary.
Page 1 of 3
© 2021 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
3. Check the air conditioning compressor mounting and ensure that all are secure and tightened to
specification.
If no issues are found after inspection do not replace the air conditioning compressor. The noises heard by the
customer are a normal acoustic characteristic and do not represent a technical issue with the air conditioning
compressor.
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:
8734
Damage Code:
0020
Labor Operations:
Refrigerant drain and fill
8703 1701
See SRT with
associated
operations
Check refrigerant lines and engine
compartment for parts touching each other
8734 0299
20 TU
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 60
TU)
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
Diagnostic Time:
Claim Comment:
As per TSB #2065450/1
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.
Page 2 of 3
© 2021 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
Additional Information
All part and service references provided in this TSB (2065450) 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.
©2021 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 3 of 3
© 2021 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.