A1921222046712_3

19 Coolant marks on the filler cap for the cooling system
19 21 22 2046712/3 July 26, 2021. Supersedes Technical Service Bulletin Group 19 number 17-89 dated July 14,
2017 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
2012 - 2021
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header (Added MY 2021)
Revised Required Parts and Tools (Updated part number)
2
07/14/2017
Revised Required Parts and Tools (Added part number)
1
02/03/2017
Initial publication
Customer statement:
 MIL on with low coolant level.
Or
 Coolant leak under front of the vehicle.
Workshop findings:
 Coolant marks around coolant filler cap for cooling system/around coolant expansion tank.
Technical Background
The pressure relief valve in the filler cap of the cooling system can give the impression that the valve
malfunctions.
Production Solution
Not applicable.
Page 1 of 2
© 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.
Service
Coolant marks around the filler cap or the coolant expansion tank do not necessarily indicate that the cap is
malfunctioning.
Check the filler cap of the cooling system according to the Elsa, if the filler cap passes the test do not replace the
cap, continue the fault finding.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Required Parts and Tools
Tool Number Tool Description
VAG1274B
Cooling system tester
VAG1274/8
Cooling system tester- Adapter
VAG1274/9
Cooling system tester- Adapter
VAG1274B/15 Cooling system tester- Adapter
Additional Information
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. 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 2 of 2
© 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.