A171562 2040644-

Technical Service Bulletin
17 Whistling noises from engine compartment
17 15 62 2040644/1 May 13, 2015.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
S6, S7, RS 7,
A8, S8
2013 - 2016
All
4.0T
Condition
• A metallic whistling or grinding sound is heard from the engine compartment when the vehicle is at idle speed.
• The sound usually only occurs when the engine is warm.
• The MIL is sporadically on.
• The following DTCs are stored in the engine control module (ECM), J623 (address word 01):
• DTC P2279 (Intake air system leak)
• DTC P0507 (Idle control system RPM higher than expected)
Technical Background
A leak in the crankcase breather module (pressure regulating valve) can cause this condition.
Production Solution
Not applicable.
© 2015 Audi of America, Inc.
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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
Service
1. Perform both of the following checks before proceeding:
• Compare the sound of the vehicle to the sound in the video located at:
https://audi-external.kzoplatform.com:443/swf/player/311 (Figure 1).
• Open the filler cap to check whether the sound is affected when the filler cap
is open.
Figure 1. QR code for
viewing the video with a QR
code reader on phones and
tablets. Alternatively, the
video can be accessed
through computer internet
browsers at the link
provided in this bulletin.
2. If the sound of the vehicle matches the sound in the video and the sound is
affected when the filler cap is opened, replace the oil separator breather module.
© 2015 Audi of America, Inc.
Page 2 of 4
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
Warranty
Claim Type:
Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin
is informational only.
Service Number:
1753
Damage Code:
0050
Labor Operations: For A8 and S8:
Oil separator breather remove +reinstall
1753 1971
20 TU
Air intake distributor remove+reinstall
2446 1921
470 TU
Oil separator breather remove +reinstall
1753 1971
20 TU
Air intake distributor remove+reinstall
2446 1921
620 TU
For S6 and S7:
Additional labor for adjustment of ACC, top view camera, and See Elsa
night vision, if necessary based on vehicle equipment
See Elsa
For RS7:
Diagnostic Time:
Oil separator breather remove +reinstall
1753 1971
20 TU
Air intake distributor remove+reinstall
2446 1923
710TU
Additional labor for adjustment of ACC, top view camera, and See Elsa
night vision, if necessary based on vehicle equipment
See Elsa
GFF – Checking and clearing fault codes included in existing
labor operations
0150 0000
10 TU
Road test prior to service procedure
0121 0002
10 TU
Road test after service procedure
0121 0004
10 TU
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 #2040644/1
© 2015 Audi of America, Inc.
Page 3 of 4
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
Required Parts and Tools
Part Number
Part Description
Quantity
079 103 542 B
Oil separator
1
079 129 717 J
Gasket intercooler left
1
079 129 717 K
Gasket intercooler right
1
N 90442501
Retaining clip
2
N 90489801
Retaining clip
2
079 145 818
Gasket throttle body
1
079 145 417 A
Gasket Recirculation valve
2
Additional Information
All parts and service references provided in this TSB (2040644) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
© 2015 Audi of America, Inc.
Page 4 of 4
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.