A191791 2048936-

19 Coolant level warning light on, coolant marks on coolant pump - 4.0 TFSI
19 17 91 2048936/1 September 20, 2017.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
S6, RS 6,
and S7
2013 - 2018
All
4.0 TFSI
RS 6+, RS
7+
2016 - 2018
All
4.0 TFSI
RS 7
2014 - 2018
All
4.0 TFSI
A8, S8
2013 - 2017
All
4.0 TFSI
S8+
2016 - 2017
All
4.0 TFSI
Condition
Customer statement:
 Coolant level warning light on. The vehicle loses or is leaking coolant.
Page 1 of 7
© 2017 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.
Workshop findings:
There are coolant marks in the area of the
coolant pump housing (Figure 1, position
12), the coolant connector union (Figure
1, position 7) or the thermostat housing
(Figure 1, position 14). After cleaning the
coolant marks and performing another
leakage test there are fresh coolant
marks on the coolant pump drive (Figure
2 through Figure 6).
Figure 1. View position complete water pump assembly (rear view).
Figure 2. Coolant marks in plug of coolant pump housing.
Page 2 of 7
© 2017 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.
Figure 3. Coolant marks on flange of coolant pump housing.
Figure 4. Coolant marks on flange of thermostat housing.
Page 3 of 7
© 2017 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.
Figure 5. Coolant marks on coolant connector union.
Figure 6. Areas where coolant marks can be found.
Technical Background
The coolant pump housing is sealed off with a slip ring seal to the input shaft. To prevent the seal from drying up,
a minor coolant leak is necessary to lubricate the seal.
If coolant marks are detected in the area of the coolant pump housing during a service and there is no customer
concern about coolant level/loss, a replacement of the coolant pump housing is not allowed.
Page 4 of 7
© 2017 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.
Production Solution
Not applicable.
Service
1. Fully complete the attached worksheet and attach it to the repair order.
2. Remove the coolant marks and bleed the cooling system according to the repair manual. Then check the
cooling system for leaks according to the repair manual:
 If there is no new leak visible on the coolant pump, do not perform any further repairs.
3. If a new coolant leak is detected and can be assigned to a component, take a photo of the renewed leak and
attach it to the repair order.
4. If there is a coolant leak in the area of the coolant connector union a replacement of the O- ring only (Figure
1, position 8) is sufficient.
Note:
In the case of insufficiently documented repair orders the warranty claim may be denied.
Warranty
Claim Type:
 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:
1950 without any parts/replace coolant pump
1961 replace O-ring on coolant connector union
Damage Code:
0050
Labor Operations:
All models:
Remove + reinstall front dampening pan
1082 1900
40 TU
1950 2999
10 TU
Must only be used if O-ring is not
replaced
Clean coolant pump
Page 5 of 7
© 2017 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.
Cover (plenum) remove + reinstall
8522 1900
According to
ElsaPro
Bleed cooling system, check for leaks
1938 0799
80 TU
1961 5599
160 TU
Remove + reinstall cooling fan housing
1920 19XX
According to
ElsaPro
Replace O-ring on connector union
1961 55 99
20 TU
GFF
No allowance
0 TU
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
0121 0004
10 TU
A8 and S8:
Replace O-ring on connector union
S6, S7, and RS 7:
Diagnostic Time:
Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:
As per TSB #2048936/1
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
Part Number
Part Description
VAG1274/8
Adapter
VAG1274/10
Adapter
VAG1274B
Adapter
VAS 6096
Cooling system pressure tester
Page 6 of 7
© 2017 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.
Additional Information
All parts and service references provided in this TSB (2048936) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2017 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 7 of 7
© 2017 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.