TSB-94-12-92
Service Bulletin Details
Public Details for: TSB-94-12-92
Audi: brake light lens, daytime running lights, fog lights, side marker lights, headlights, taillights, front turn signals would all have visible condensation inside due dampness, from cold lens, settling inside. Models 1996-2013 - all m
- 2013 - 2012 - 2010 - 2009 - 2008 - 2005 - 2001 - 2000 -
Models from 2013
Models from 2012
2012 AUDI Q5 |
2012 AUDI S4 |
2012 AUDI S5 |
Models from 2010
2010 AUDI S6 |
Models from 2009
2009 AUDI RS4 |
2009 AUDI S8 |
Models from 2008
2008 AUDI RS6 |
Models from 2005
2005 AUDI ALLROAD |
Models from 2001
2001 AUDI 100 |
2001 AUDI S3 |
Models from 2000
2000 AUDI 90 |
SB-10047800-2648 Technical Service Bulletin 94 Exterior lights, moisture accumulation 94 12 92 2012749/11 October 24, 2012. Supersedes Technical Service Bulletin Group 94 number 11-52 dated October 11, 2011 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment All 1996-2013 All Not Applicable Condition REVISION HISTORY Revision Date Purpose 11 - Revised Service (Added Q7 specific TSB) 10 10/5/2011 Revised header data (Added new A6) 9 7/11/2011 Revised header data (Added model A7) 8 5/25/2011 Revised header data (Added model years) 7 11/18/2008 Revised Title to include Repair Group Condensation is visible on the inside of the headlight, taillight, fog light, side marker light, front turn signal, daytime running lights, or third brake light lens. Technical Background Damp air settles on the inside of a cold lens, which creates condensation. The headlight circulation system allows air from the outside to flow through the headlights. This open waterprotected ventilation system (needed for pressure compensation) creates different climate zones in the headlight: very warm areas, where the lens is warmed up by the light, and relatively cool areas, where the lens is cooled down by the air flow. Considerable differences in humidity and temperature between the inside and the outside of the headlights, even while driving, can lead to condensation. This is especially true in cold and wet weather, but it can also happen after a car wash, after steam cleaning the engine or the front end, with overnight temperature changes, etc. This Page 1 of 2 © 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 phenomenon is more visible on lenses made of clear glass than on lenses with patterns. The moisture does not affect the headlight function (light performance) and does not lead to corrosion or other damage to headlight parts. Production Solution Not applicable. Service For headlights, the affected lens surface should be clear after approximately 10 minutes of light operation, although the entire lens surface may not clear. The clearing process depends on the outside temperature and the humidity. In cases where water droplets have formed on the inside of the lens or water has collected at the bottom of the light assembly, check for leaking seals and/or cracks in the lens or light assembly. If no damage is found, use compressed air (less than 30 PSI) to clear the lens. On light assemblies with LED lights, e.g. S6 daytime running lights, the LED lights do not emit enough heat to clear the moisture from the lens. Only the pressure difference of the ventilation system provides the air flow to clear the moisture on the inside of the lens. The design of the ventilation system on these types of lights will ensure the lens is clear after a few miles have been driven. For Audi Q7, please see TSB 2028277 94 Moisture accumulation in headlamps for the installation of headlight ventilation valves. Do not replace light or lens assemblies for these conditions. Warranty This TSB is informational only and not applicable to any Audi warranty. Additional Information All part and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Dept. and service manuals for the latest information. Page 2 of 2 © 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.