SB-01-12-57
Service Bulletin Details
Public Details for: SB-01-12-57
Summary to be provided on a future date.
- 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 - 2005 -
Models from 2014
2014 AUDI RS 5 |
2014 AUDI S7 |
2014 AUDI S8 |
Models from 2013
2013 AUDI R8 |
2013 AUDI RS 5 |
2013 AUDI S7 |
2013 AUDI S8 |
Models from 2012
2012 AUDI R8 |
2012 AUDI R8 GT SPYDER |
2012 AUDI S5 |
Models from 2011
2011 AUDI R8 |
2011 AUDI R8 SPYDER |
2011 AUDI S5 |
Models from 2010
2010 AUDI R8 |
2010 AUDI S5 |
2010 AUDI S6 |
Models from 2009
2009 AUDI A4 |
2009 AUDI A6 |
2009 AUDI R8 |
2009 AUDI S5 |
2009 AUDI S6 |
Models from 2008
2008 AUDI A4 |
2008 AUDI A6 |
2008 AUDI R8 |
2008 AUDI S5 |
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Models from 2007
2007 AUDI A4 |
2007 AUDI A6 |
2007 AUDI S6 |
Models from 2006
2006 AUDI A4 |
2006 AUDI A6 |
Models from 2005
2005 AUDI A4 |
2005 AUDI A6 |
Technical Service Bulletin 01 Idle speed characteristic during cold start 01 12 57 2028344/3 October 29, 2012. Supersedes Technical Service Bulletin Group 01 number 12-51 dated July 18, 2012 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment Cabrio 2007-09 Engine BKH A4 2005-09 Engine BKH A6 2005-09 Engine BKH S5 2008-12 Engine CAUA S6 2007-11 Engine BXA S8 2007-09 Engine BSM R8 V8 2008-10 Engine BYH R8 V8 2011-13 R8 V10 2009-13 Engine BUJ R8 V10 2012-13 Engine CMPA RS 5 2013-2014 Engine CFSA S6 2013-2015 Engine CEUC S7 2013-2015 Engine CEUC S8 2013-2015 Engine CGTA A8 4.0T 2013-2015 Engine CEUA Engine CNDA All Condition REVISION HISTORY Revision Date Purpose 3 - Revised header data ( New models added ) 2 7/18/12 Revised header data 1 1/13/2012 Original publication Noises/inconsistent engine operation after cold start during the catalyst heating phase. The customer may interpret this engine roughness as misfiring. Page 1 of 3 © 2012 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 Service Bulletin Technical Background To comply with the legal requirements on exhaust gas emissions according to the LEV-1 and LEV-2 standards, a high exhaust gas quality must be ensured. The necessary catalyst only operates at a temperature over 300°C (572°F). To achieve this, the catalyst is heated up. The catalyst heating phase is achieved by a late ignition angles and by introducing additional fresh air to the exhaust valves (secondary air system). Late ignition angles make sure that the exhaust gas from the cylinders has a higher temperature. This exhaust gas includes fuel that is un-burnt, and was deliberately injected into great quantities. The secondary air system adds fresh air to the exhaust gas as it leaves the cylinder and the extra fuel is burnt. As a result, the temperature of the exhaust gas and of the catalyst increases quickly. Effects: The afterburning in the exhaust manifold before catalyst changes the sound characteristic of the engine. This heating-up of the catalyst, including afterburning, is normal and has no effect on the service life of the engine. During this catalyst heating phase the engine has increased idle speed, may have increased vibrations, and a different sound characteristic. Conditions for the catalyst heating phase: Depending on conditions the time of the catalyst heating phase varies. Production Solution No change Service Please do not repair. Explain the technical background to the customer. Warranty This TSB is informational only and not applicable to any Audi warranty. Page 2 of 3 © 2012 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 Service Bulletin Additional Information All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information. Page 3 of 3 © 2012 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.