A1923392070349_1

Technical Service Bulletin
19 loss of coolant from coolant pump - V6 TFSI
19 23 39 2070349/1 May 17, 2023.
Model(s)
Year
S4, S5, S5
Cabriolet, S5
Sportback, and
SQ5
2018 – 2024
RS 5
2018 – 2019
2021 – 2024
RS 5 Sportback
2019
2021 – 2024
A6, A7, A8, and
Q8
2019 – 2024
S6, A6 allroad,
S7, and Q7
2020 – 2024
A8 e quattro
2020 – 2021
SQ5 Sportback
2021 - 2024
VIN Range
Vehicle-Specific Equipment
All
V6 Engine
Condition
Customer states:
• Coolant loss/leak.
• Coolant warning lamp.
Workshop findings:
The coolant pump is suspected to be the source of the leak.
Technical Background
To avoid repeat repairs or incorrect repairs, make sure to locate the leak precisely. Ensure that the coolant level
has not dropped due to insufficient bleeding during production or due to a previous repair.
Note:
Traces of coolant (small quantity) on drip cup (refer to figure 1).
Due to lubrication/cooling of the seal, up to 3 ml may escape over the course of 100 hours of operation. This is
quite normal and does not constitute a reason for a complaint.
Page 1 of 4
© 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
Figure 1: Traces of coolant on the drip cup.
Production Solution
Not Applicable
Service
Locate the leak precisely and then proceed as follows:
1) Clean and dry the leak and traces of coolant thoroughly.
2) Fill the cooling system to max.
3) Perform visual check; assess whether there may be a leak at idling speed and at higher engine speeds of up to
approx. 2500 rpm.
4) Check the cooling system for leaks according to the Workshop Manual.
5) Reassess the suspected leak:
Page 2 of 4
© 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
→ No further coolant leak can be detected: continue to observe without replacing any parts.
→ Coolant leak can be detected again: replace the component causing the leak.
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:
1950
Damage Code:
0050
Labor Operations:
Remove and install noise insulation.
1082 19XX
See SRT with
associated
operations
Check and top up coolant, clean, and perform
visual check.
1938 3599
30 TU
Check cooling system for leaks
1901 0150
See SRT with
associated
operations
Remove and install coolant pump (Only if
Faulty)
1950 19XX
See SRT with
associated
operations
Claim Comment:
As per TSB 2070349/1
All warranty claims submitted for payment must be in accordance with the Audi Warranty policies and
Prodcedures Maual. Claims are subject to review or audit by Audi warranty.
Additional Information
All part and service references provided in this TSB (2070349) 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
Page 3 of 4
© 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
these materials be modified or reposted to other sites, without the prior expressed written permission of the
publisher.
Page 4 of 4
© 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.