A8723502068460_4

Technical Service Bulletin
87 Air conditioning does not cool - P053000, P251500 stored in C5
87 23 50 2068460/4 August 10, 2023. Supersedes Technical Service Bulletin Group 87 number 23-40 dated April
10, 2023, for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
A6, A6 allroad,
S6, A7, S7, A8,
S8, e-tron
Sportback
2020 – 2022
quattro, Q5, Q5 e
quattro, SQ5,
Q7, SQ7, Q8,
SQ8, and RS Q8
A8 e quattro
2020 – 2021
RS 6 Avant, RS
7, e-tron quattro,
Q5 Sportback,
and SQ5
Sportback
2021 – 2022
e-tron GT, RS etron GT, and etron S quattro
2022
Condition
REVISION HISTORY
Revision
Date
Purpose
4
-
Revised Service (Changed statement concerning sensor marking)
3
04/11/2023
Revised Warranty (Correction to e-tron SRT)
2
01/31/2023
Revised Warranty (Change to max time allowed for GFF)
Customer states:
The air conditioning system does not cool the cabin. This condition may be intermittent in nature.
Workshop findings:
The symptom is confirmed. One or both of the following DTCs are stored in Thermal management, J1024
(address word 00C5):
• DTC P053000 – Air conditioning system pressure sensor electrical fault.
• DTC P251500 – Refrigerant pressure sensor 2 electrical fault.
© 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
Technical Background
A failure of the sensor electronics causes a loss of pressure evaluation. The sensor with base part number
4M0959603 and a build date before the date Calendar Week 31, 2021 is at issue (G395 / G827).
Production Solution
An improved sensor has been implemented in production.
Service
1. Should the vehicle present with the symptom profile described in this TSB inspect and/or replace all of the
pressure sensors in the refrigerant circuit that are of the base part number 4M0959603 and have a build date
before Calendar Week 31, 2021. Each model for which this TSB appears will have between 1 and 3 of this
type of sensor installed at various positions in the refrigerant circuit, either on the low or high pressure sides
of the circuit (G395 / G827).
2. Inspect the markings on the sensor to determine if the
sensor has been previously replaced with an improved
sensor produced after Calendar Week 31,
2021. Figure 1 shows the locations of the markings
and their interpretation. In this example, while the
sensor is an ‘E’ index sensor, contains a green dot on
the connector housing and a laser marking on the
aluminum housing the build date of the sensor is
before Calendar Week 31, 2021, and would require
replacement.
Figure 1. Pressure and temperature sensor
markings and build date.
Note:
The presence of the green dot on the sensor is not the sole, conclusive evidence of the sensor being of the
improved type. The green dot was applied in production as an immediate identification of an improved sensor
but the green dot was not applied indefinitely. Always check the sensor date as this is the confirmation of the
sensor status.
© 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
3. A sensor with index ‘E’, produced after Calendar Week 31, 2021, has a laser marking on the aluminum
housing and may or may not contain a green dot on the connector housing is of the improved type and need
not be replaced.
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:
8757
Damage Code:
0040
Labor Operations:
A6 / A7:
Pressure switches (both) 8757 1900
remove and reinstall
See SRT with associated
operations
Refrigerant drain and fill
8703 1750
See SRT with associated
operations
Pressure switches (both) 8757 2093
remove and reinstall
See SRT with associated
operations
Refrigerant drain and fill
8703 1750
See SRT with associated
operations
8757 1950
See SRT with associated
operations
Q7 / Q8:
A8:
PHEV:
Pressure switch (G395)
remove and reinstall
-OR
Not PHEV:
8757 1900
See SRT with associated
operations
8703 1750
See SRT with associated
operations
Pressure switches
(G395) remove and
reinstall
Refrigerant drain and fill
© 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
e-tron GT:
Storage compartment
remove and reinstall
7007 1900
See SRT with associated
operations
Wheel remove and
reinstall
4405 1951
See SRT with associated
operations
Cross brace remove and 5069 1960
reinstall
See SRT with associated
operations
Disable HV system
voltage deactivated and
activated
9310 8302
See SRT with associated
operations
Wiper motor remove and 9215 1950
reinstall
See SRT with associated
operations
Pressure switches (all 3) 8709 2099
remove and reinstall
190 TU
Refrigerant drain and fill
8703 1750
See SRT with associated
operations
Pressure switches (both) 8709 1901
remove and reinstall
See SRT with associated
operations
Refrigerant drain and fill
8703 1750
See SRT with associated
operations
Pressure switches (both) 8709 2051
remove and reinstall
See SRT with associated
operations
Refrigerant drain and fill
8703 1750
See SRT with associated
operations
GFF
0150 0000
Time stated on the
diagnostic protocol (Max
50 TU)
Road test prior to the
service procedure
No allowance
0 TU
Road test after the
service procedure
No allowance
0 TU
Q5:
e-tron:
Diagnostic Time:
© 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
Claim Comment:
As per TSB 2068460/4
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
4M0959603E
1-3
Pressure and temperature sensor
Additional Information
All parts and service references provided in this TSB (2068460) are subject to change and/or removal.
©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 5 of 5
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.