A1923342069248_1

Technical Service Bulletin
19 Red Coolant warning lamp comes on OR MIL on, DTC P218100 and/or P1BB400
19 23 34 2069248/1 January 26, 2023.
Model(s)
Year
A8
2019 – 2021
S8
2020 – 2021
SQ7, SQ8, and
RS Q8
2020 – 2022
RS 6 Avant, and
RS 7
2021 - 2022
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Condition
Customer states:
• The red coolant temperature warning is displayed in the instrument cluster and the engine fans are running.
However, according to the coolant temperature gauge, the engine temperature is not excessively high.
Or
• MIL on.
Workshop findings:
The following DTCs may be stored in the Engine Control Module, -J623- (address word 0001):
• DTC P218100: Cooling System Performance
• DTC P1BB400: Cylinder head temperature too low
Technical Background
In some instances, corrosion between the brass bushing and the heating pin leads to inaccurate open and close
positions during the operating temperature range. The surface treatment process of the thermostat sleeve has
been improved to minimize corrosion.
Production Solution
Replacing the Map Controlled Engine Cooling Thermostat F265 will correct this. Some models will have optimized
software in the Engine Control Module, -J623- (address word 0001), please see the service section for additional
details.
Service
Page 1 of 3
© 2023 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
1. Replace Map Controlled Engine Cooling Thermostat F265.
2. Update the Engine Control Module, -J623- (address word 0001) using the SVM action code as listed in the
table below, if necessary:
SVM Update Instructions
Follow all instructions in TSB 2011732: 00 Software Version Management (SVM), operating instructions.
Model
Old Target Data
Container
Number
Old Target
Data
Container
Version
New Target
Data Container
Number (or
higher)
New Target
Data Container
Version (or
higher)
MY 2021 RS6/RS7
4K0907557F
0002
4K0907557F
0002
MY 2022 RS6/RS7
4K0907557G
0001
4K0907557G
0002
SVM Code Input
01A297
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:
1958
Damage Code:
0010
Labor Operations:
Software Update (Includes checking for
DTCs)
0151 0000
Time stated on
the diagnostic
protocol (Max
50 TU)
Thermostat remove + reinstall
1958 1973
See SRT with
associated
operations.
GFF
0150 0000
Max 15 TU
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
0121 0004
10 TU
Diagnostic Time:
Claim Comment:
As per TSB 2069248/1
Page 2 of 3
© 2023 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
Required Parts and Tools
Tool Number
Tool Description
VAS 6160/VAS 6150
VAS tester with the current version of ODIS (Windows 10).
Additional Information
All part and service references provided in this TSB (2069248) 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.
Page 3 of 3
© 2023 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.