V941901-2011521

Technical Bulletin
Model(s)
Year
Eng. Code
Trans. Code
VIN Range From
VIN Range To
1996-2019
All
All
All
All
All
(except Routan)
Condition
94 19 01 February 18, 2019 2011521/14 Supersedes Technical Bulletin 94-17-01 (V941701) dated May 31, 2017
to include additional model and model year applicability.
Exterior Lights, Moisture Accumulation
Condensation and or water droplets visible on inside of exterior light lenses.
Note:
Condensation does not affect performance of light assemblies.
Technical Background
Exterior light assemblies
(headlights, taillights, fog lights,
turn signals) are vented and may
collect moisture on their inner
surfaces, depending on humidity
and climatic conditions. The
unfavorable condensation built up
(Figure 1) visible to the customer
is more common with modern
exterior lights because of clear
glass optics, however this
condition will not have an impact
on the functionality or durability of
the component.
Figure 1
Page 1 of 4
© 2019 Volkswagen Group 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 Volkswagen Group 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 Bulletin
Environmental conditions that frequently cause condensation to build up on
lens:
 Car washes
 Driving or parking in rain/snow
 Frequent short distance operation in wet weather
For headlight condensation that is due to environmental conditions, the
affected lens surface should be cleared after approx. 30 minutes of light
operation.
Production Solution
No production change required.
Service
In cases where larger water droplets have formed on the inside of the lens or significant amount of water has
collected at the bottom of a light assembly, Figure 2:
Figure 2
Page 2 of 4
© 2019 Volkswagen Group 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 Volkswagen Group 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 Bulletin
 Check that the housing covers (Figure 3), are properly installed. If the housing covers are not fully seated in
place, use compressed air (less than 30 PSI) to blow out the lens and recheck for leaks.
Figure 3
 Check for leaking seals, cracks in lenses or assemblies.
DO NOT replace light or lens assemblies unless damage is found.
If damage to seals or cracks to lenses or assemblies are found:
 Follow normal repair procedures for this type of failure (provide photograph(s) with repair documentation for
verification).
If the condition is determined to be condensation due to environmental conditions and no damages are
found, explain to the customer the information provided in the Technical Background section above.
Page 3 of 4
© 2019 Volkswagen Group 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 Volkswagen Group 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 Bulletin
Warranty
Information only.
Required Parts and Tools
No Special Parts required.
No Special Tools required.
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
Document Control Revision Table
Instance Number
Published Date
Version Number
Reason For Update
2011521/14
2/18/19
V941901
To include model year
2019.
2011521/13
5/31/17
V941701
To include model year
2018.
2011521/1
8/1/03
V940301
Original publication.
Page 4 of 4
© 2019 Volkswagen Group 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 Volkswagen Group 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.