19 Heating output insufficient
19 17 78 2046971/1 February 24, 2017.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

S8 +

2016 - 2017

All

Not Applicable

Condition
Customer statement:
 Poor heat output in passenger compartment.
Workshop findings:
 The customer statement can be reproduced.
 No relevant event entry is found in the Engine control module (ECM) (J623) (address word 0001) or
Climatronic control module (J255) (address word 0008).

Technical Background
Air is in cooling system circuit.

Production Solution
Improved lower coolant hose with check valve.

Service
1.

Remove cap at coolant expansion tank.

2.

Tape left fender around headlight opening to protect paint.

3.

Remove left front headlight refer to ElsaPro at Repair Manual >> Electrical System >> Electrical
Equipment >> 94 Exterior Lights, Switches >> Headlamps >> Headlamp, Removing and Installing
>> Headlamp, Removing and Installing, Vehicles from MY 2014.

Page 1 of 4
© 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.

4.

Replace hose with check valve.

Figure 1. Hose with check valve.
5.

Reinstall headlight.

6.

Bleed the coolant circuit according to ElsaPro at Repair Manual >> Engine >> 19 Cooling System
>> Cooling System/Coolant >> Cooling, Draining and Filling.

7.

Perform heater system check per ElsaPro at Repair Manual >> Heating, Ventilation & Air
Conditioning >> Heating, Ventilation & Air Conditioning >> 00 General, Technical Data >>Repair
Information >> Heating Output, Checking >> Heating Output and Temperature Control Door
Activation, Checking.

Page 2 of 4
© 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.

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:

1962

Damage Code:

0010

Labor Operations:

Replace lower coolant hose with check valve
to additional radiator, remove + reinstall
headlight.

1962 1999

110 TU

Bleed cooling system including remove and
install wiper, plenum chamber cover, lock
carrier cover

1901 0799

60 TU

GFF

0150 0000

Time stated
on
diagnostic
protocol
(Max 10 TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

0121 0004

10 TU

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 #2046971/1

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.

Page 3 of 4
© 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.

Required Parts and Tools
Part Number

Part Description

Quantity

4H0 122 063 A

Hose with check valve

1

N 906 867 01

Spring clip

1

G 013A8J1G

Coolant additive

1

Tool Number

Tool Description

VAS6096

Cooling System Charging Unit

VAG 1974/8

Adapter

VAG 1978/10

Adapter

Additional Information
All parts and service references provided in this TSB (2046971) 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 4 of 4
© 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.