A1920102061604_1

Service Bulletin Details

Public Details for: A1920102061604_1

This bulletin contains instructions for resolving a coolant leak.


- 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 -

Models from 2018
2018 AUDI Q3
19 Coolant leak in area of coolant thermostat housing/coolant pump - 2.0TFSI
19 20 10 2061604/1 December 14, 2020.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A3
2007 - 2013
All
Evo2
A4
2007 - 2016
All
Evo2
A5
2010 - 2016
All
Evo2
A6
2012 -2015
All
Evo2
Q3
2012 - 2018
All
Evo2
A8
2013
All
Evo2
Q5
2011 - 2017
All
Evo2
TT
2009 - 2014
All
Evo2
Condition
Customer state:
 The coolant temperature warning light is on.
 There are clear coolant marks under the front end/engine compartment.
Workshop findings:
 The leak can be reproduced.
 The cause for the coolant loss is found around the coolant thermostat housing or the coolant pump.
Page 1 of 7
© 2020 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 Background
Coolant loss from the
coolant thermostat housing
(Figure 1, position 1) or the
coolant pump (Figure 1,
position 2).
Figure 1. Coolant thermostat/coolant pump. Parts are available separately, see
parts table below.
Production Solution
Not applicable.
Service
Note:
Refer to Warranty Policy and Procedures section 3.21.9 (Only category 3 leaks in the table Categorization of leaks
can be claimed under warranty).
Check the cooling system for leaks according to the repair manual (pressure check).
Only replace the leaking component (coolant pump or coolant thermostat housing).
Proceed as follows:
1) Remove the coolant thermostat housing including the coolant pump according to Elsa at repair manual: Engine
>> 4 - Cylinder Direct Injection >> 19 Cooling System >> Coolant Pump/Coolant Thermostat >> Coolant Pump,
Removing and Installing.
Page 2 of 7
© 2020 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.
2) Separate the water pump and coolant thermostat housing by removing the five connecting bolts (Figures 1 - 2).
3) Replacing the leaking component (coolant thermostat housing or coolant pump) with a replacement part,
proceed as follows:
 Assemble the coolant thermostat
housing and the coolant pump and
attach the five connecting bolts.
 Align the two components against one
another in such a way that both
components are flush to one another in
the areas marked in red (Figure 2). The
thermostat housing must not be
higher/lower than the coolant pump
(run your finger over the three areas to
check).
 Torque the connecting bolts of the two
components to 10 Nm.
Figure 2. Securing bolts of the coolant pump (1 to 5).
4) Install the assembled coolant module to the engine. Make sure the bolts are only hand-tight at this point.
Page 3 of 7
© 2020 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.
5) Check the toothed belt tension (Figure
3) by pressing the toothed belt
together centrally between the two
toothed belt sprockets. The measured
distance of the backs of the toothed
belt should be between 28mm and
30mm. A measuring caliper can also
be used for toothed belt compression
and measurement.
Figure 3. Checking the toothed belt tension.
The measured distance is between 28mm and 30mm:
6. Complete the installation of the coolant module according to the instructions in ELSA (Step 7 is not
necessary).
The measured distance is smaller than 28mm and greater than 30mm:
Page 4 of 7
© 2020 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.
7) Adjustment of the toothed belt tension is
necessary.
Proceed as follows (Figure 4) for assistance:
 Note down the measured value (e.g. 26mm)
from step 5).
 Remove the cooling module from the engine
again, loosen the coolant pump bolts (Figure
2) and make adjustments as outlined below.
 If the measured distance of the backs of the
toothed belt (pressed together) is less than
28mm (e.g. 25mm), then the belt tension is
too low. A slight adjustment away from the
balance shaft is necessary (direction "a").
 If the distance of the backs of the toothed belt
(pressed together) is greater than 28mm (e.g.
32 mm), then the belt tension is too great. A
slight adjustment towards the balance shaft is
necessary (direction "b").
Figure 4. Adjusting the toothed belt tension.
8. Tighten the five securing bolts of the coolant pump and repeat steps 4 and 5.
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:
 1950 (Coolant Pump).
 1955 (Thermostat Housing).
Damage Code:
0050
Labor Operations:
A3, Q3, and TT:
Page 5 of 7
© 2020 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.
Remove and install the coolant pump
1950 1937
See SRT with
associated
operations
1950 1913
See SRT with
associated
operations
Replace water pump and check/adjust
tooth belt tension
1950 5599
20 TU
Replace thermostat housing and
check/adjust tooth belt tension
1955 1999
20 TU
GFF
No allowance
0 TU
Road test prior to the service procedure No allowance
0 TU
Road test after the service procedure
0 TU
A4, A5, A5 Cab, A6, and Q5:
Remove and install the coolant pump
All:
Diagnostic Time:
No allowance
As per TSB #2061604/1
Claim Comment:
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
See ETKA
Fasteners, Bolts, Nuts, Screws, and additional gaskets
as needed per the Repair Manual
See ETKA/ELSA
06H121010A
Water Pump (only if leaking)
01
06H121111R
Thermostat Housing (only if leaking)
01
06H121043
Gasket
01
Page 6 of 7
© 2020 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
More information on this system can be found in the following resources:
 Warranty Online: Warranty Policy and Procedures section 3.21.9.
 Elsa: Engine >> 4 - Cylinder Direct Injection >> 19 Cooling System >> Coolant Pump/Coolant Thermostat >>
Coolant Pump, Removing and Installing.
All parts and service references provided in this TSB (2061604) are subject to change and/or removal.
©2020 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 7 of 7
© 2020 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.


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