87 Air conditioning cooling is diminished and/or compressor is noisy
87 20 11 2061277/1 November 6, 2020.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A6 Avant,
RS 6 Avant

2021

All

Not Applicable

A6 allroad,
RS 7

2020 - 2021

All

Not Applicable

A6, A7, S6,
and S7

2019 - 2021

All

Not Applicable

Condition
Customer states:
 When the air conditioning is operating the intensity of cold air feels diminished.
Or
 When the air conditioning is operating a rattling noise can be heard from the engine compartment. The noise is
no longer present when the air conditioning is switched off.
Workshop findings:
 Either of these symptoms can be reproduced.

Technical Background
A manufacturing inconsistency has been discovered in the N280 regulating valve installed in air conditioning
compressors produced by Sanden.
Note:
Only air conditioning compressors manufactured by Sanden with the part number 4K0 816 803 D are affected.

Production Solution
Not applicable.

Page 1 of 4
© 2020 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.

Service
1.

Check the fault memory in the electronic central control module (BCM 1), J519 (address word 0009) for any
stored DTC’s. Should any DTC’s be stored the corresponding test plan(s) for these DTC’s should be
followed and completed in their entirety.

2.

If there are no DTCs are stored in the electronic central control module (BCM 1), J519 (address word 0009)
proceed with the test plan for air conditioning efficiency: Test plan >> Select individual test plan >> 09 Electronic Central Electrical J 519 >> 09 - Electronic Central Electrical, functions >> 09 other functions, air
conditioning system.

3a. The result of the test plan may conclude that the refrigerant in the circuit is incorrect:
 Correct the refrigerant volume if necessary.
Or
3b. The result of the test plan may conclude the N280 regulating valve for the air conditioning compressor is
faulty:
 Replace the N280 regulating valve for the air conditioning compressor according to the procedure in the
repair manual.
Or
3c. The result of the test plan may conclude the air conditioning compressor is faulty:
 Replace the air conditioning compressor according to the procedure in the repair manual.
Note:
Should replacement of the N280 regulating valve or air conditioning compressor become necessary flushing
of the refrigerant circuit should also be performed in the course of either of these repairs.

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:

 Replace N280 regulating valve: 8737
 Replace air conditioning compressor: 8734

Damage Code:

0010

Page 2 of 4
© 2020 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.

Labor Operations:

Diagnostic Time:

Claim Comment:

Refrigerant drain and fill

8703 1750

See SRT with
associated
operations

Air conditioner clean

8701 2950

See SRT with
associated
operations

Compressor remove and reinstall

8734 1943

See SRT with
associated
operations

Compressor replace

8734 5550

See SRT with
associated
operations

N280 regulating valve replace

8737 195XX

See SRT with
associated
operations

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 80
TU)

Road test prior to the service procedure

0121 0002

10 TU

Road test after the service procedure

0121 0004

10 TU

As per TSB #2061277/1

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.

Required Parts and Tools
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

See ETKA

Fasteners, Bolts, Nuts, and Screws as needed per the
Repair Manual

See ETKA/ELSA

Page 3 of 4
© 2020 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.

4K0816803D

01

Air conditioner compressor
4K0260839

Valve for refrigerant compressor

01

Additional Information
All parts and service references provided in this TSB (2061277) are subject to change and/or removal.
©2020 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 4 of 4
© 2020 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.