A8723572071619_1

Technical Service Bulletin
87 Air conditioning does not cool
87 23 57 2071619/1 October 9, 2023.
Model(s)
Year
A4, and A4
allroad
2017 – 2018
S4, A5, A5
Cabriolet, A5
Sportback, S5,
S5 Cabriolet, S5
Sportback, and
RS 5
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
2018
Condition
Customer states:
The air conditioning system does not cool.
Workshop findings:
The symptom can be duplicated. The air conditioning compressor will not activate due to low refrigerant in the
circuit. Various DTC’s may be stored in 08 - Heating/Air Conditioning Electronics indicating a low refrigerant
volume.
Technical Background
A refrigerant leak may be found at the air
conditioning condenser, specifically where the
cross tubes meet the collector tank. This is
caused by a weakening of the brazed cross tube
to collector connections.
Figure 1. Evidence of a refrigerant leak at the
condenser.
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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
Production Solution
The condenser construction has been improved in production.
Service
1. Perform a thorough refrigerant circuit leak diagnosis. The calibration gas method as described in
ElsaPro or TSB 2064077 is preferred.
To avoid repeat repairs be aware that while the issue described in this TSB provides
information on a specific point of refrigerant escape it is possible that the vehicle has
additional refrigerant circuit leaks; the diagnosis and repair of which should be addressed
as well according to the repair information in ElsaPro.
2. If contrast agent
is used figure 2
shows dye
residue in the
area of the
condenser at
issue.
Figure 2. Evidence of a refrigerant leak at the condenser using contrast agent as
the diagnostic medium.
3. Figure 3 shows
evidence of
refrigerant escape
from the area of
the condenser at
issue as viewed
using contrast
agent illuminated
with UV lighting.
© 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
Figure 3. Evidence of a refrigerant leak at the condenser using contrast agent
and UV lighting.
4. Should the vehicle present with the condenser refrigerant leak as described in this TSB replace the
air conditioning condenser.
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:
8750
Damage Code:
0050
Labor Operations:
Air conditioner check
8701 0199
Time necessary for
diagnosis supported by
punch time (Max 130 TU)
Diagnostic Time:
Condenser remove and reinstall
8750 19XX
See SRT with associated
operations
GFF
0150 0000
Time stated on the
diagnostic protocol (Max
20 TU)
Road test prior to the service procedure
No
allowance
0 TU
Road test after the service procedure
No
allowance
0 TU
As per TSB 2071619/1
Claim Comment:
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
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
• TSB 2064077: 87 Air conditioning refrigerant circuit diagnostic method using calibration gas
© 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
All part and service references provided in this TSB (2071619) 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.