01 MIL on (DTC P2181, P0597, or P0599 Cooling system performance)
01 17 46 2038045/5 November 21, 2017. Supersedes Technical Service Bulletin Group 01 number 17-18 dated
June 7, 2017 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

S6, S7, RS
7, S8, and
A8

2013 - 2015

All

4.0 TFSI

Condition
REVISION HISTORY
Revision

Date

Purpose

5

-

Revised Required Parts and Tools (Updated quantity)

4

06/07/2017

Revised Warranty (Updated Labor Operations and Claim Types)

3

06/24/2016

Revised header data (Added model years; added DTCs)
Revised Condition (Added DTCs)
Revised Service (Completely revised)
Revised Warranty (Updated Labor Operations)

Customer Statement:
 MIL on.
Workshop Findings:
One or more of the following DTC(s) is stored in the engine control module (ECM), J623 (address word 0001):
 DTC P218100 (Cooling System Performance)
 DTC P059700 (Thermostat heater control circuit open)
 DTC P059900 (Thermostat heater control circuit high)

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.

Technical Background
DTC P218100 will be stored if, after a specified air flow (warm-up phase), the measured engine temperature does
not reach the value in the timing map. Particles in the cooling system from the production process affect the
closing of the coolant thermostat.
Note:
Replacing the coolant temperature sender does not fix the problem.

Production Solution
Optimized coolant thermostat.

Service
1. Replace the coolant thermostat F265 with part number 079121115BD.
2. Fill the new coolant additive in the cooling system according to manufacturer guidelines. Observe the mixture
ratio and filling-up procedure.
Note:
Only mix distilled water with coolant additives. Distilled water provides optimum corrosion protection.
Note:
The filling procedure outlined in Elsa must be followed. It is important that the vacuum-down, filling, and bleeding
processes for the specific vehicle being repaired are used.

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:

1958

Damage Code:

0016

Labor Operations:

Thermostat remove + reinstall (S6 and S7)

1958 1921

200 TU

Thermostat remove + reinstall (A8 and S8)

1958 1921

220 TU

Thermostat remove + reinstall (RS 7)

1958 1923

240 TU

GFF – Checking and clearing fault codes included in
existing labor operations

0150 0000

10 TU

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

0121 0004

10 TU

Diagnostic Time:

Claim Comment:

As per TSB # 2038045/5

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

Quantity

079121115BD

Map controlled engine cooling thermostat F265

1

G 013A8J1G

Coolant additive

1

Outside material

Distilled water (obtain locally)

Shop supply

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.

Tool Number

Tool Description

VAS 6096

Cooling System Charge Unit

VAG 1974/8

Adapter

VAG 1978/10

Adapter

VAS 6208

Drip tray

T10007A

Refractometer

Additional Information
All parts and service references provided in this TSB (2038045) 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.