A20167820451791

Audi
Technical Service Bulletin
20 Noises/vibrations from engine compartment
20 16 78 2045179/1 September 14, 2016.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
RS5
2012- 2015
All
Not Applicable
2012- 2015
All
Not Applicable
RS5
Cabriolet
Condition
•
Clicking and ticking noises from the engine area can be heard in the passenger compartment.
•
The noises are heard after a 3-5 minute warm-up phase at idle speed.
•
After activated charcoal filter solenoid valve N80 is unfastened from the holder, the noise is no longer present.
Technical Background
The noises are caused by activation of the solenoid valve N80 in the engine compartment and contact between
the activated charcoal filter lines. As the activation frequency of the solenoid valve changes, the noise frequency
in the vehicle interior also changes.
With the ODIS tester (using the output test), the noises can be linked with the required position of the solenoid
valve:
•
Required position of solenoid valve 0% --> No noise.
•
Required position of solenoid valve 0% - 25% --> Activation frequency becomes faster as position increases.
•
Required position TEV 25 - 0% --> Activation frequency becomes slower as position decreases.
Production Solution
Not applicable.
Page 1 of3
© 2016 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 iroperty 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 reiroduced, 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 Jrior exp-essed written permission of the
publisher.
Audi
Technical Service Bulletin
Service
1. Explain to the customer that this is a
normal condition.
2. Check the activated charcoal filter lines for
contact marks (Figure 1 and Figure 2). If
necessary, insulate the lines to prevent
the noise.
Figure 1. Activated charcoal filter lines.
Figure 2. Activated charcoal filter lines.
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
Page 2 of3
© 2016 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 iroperty 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 reiroduced, 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 Jrior exp-essed written permission of the
publisher.
Audi
Technical Service Bulletin
All parts and service references provided in this TSB (2045179) are subject to change and/or removal. Always
check with your Parts Department and service manuals for the latest information.
©2016 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 3 of3
© 2016 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 iroperty 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 reiroduced, 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 Jrior exp-essed written permission of the
publisher.