A6421772062618_1

64 Frameless window auto-drop function is inoperative in freezing weather
64 21 77 2062618/1 March 12, 2021.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
A5, A5
Cabriolet,
A5
Sportback,
and RS 5
2010 - 2022
All
Not Applicable
TT, TT
Roadster,
and TT RS
2016 - 2022
All
Not Applicable
A3 Cabriolet
2015 - 2019
All
Not Applicable
A7, RS 7
2012 - 2022
All
Not Applicable
Condition
Customer states:
 Front and/or rear doors cannot be opened or closed in freezing weather.
Workshop findings:
 The windows are frozen to the outer window slot seals. The windows cannot drop when trying to open/close
the doors.
 The window auto-drop function is inoperative due to snow and ice build-up.
Technical Background
If snow and ice collect on the windows and the
outer window slot seals, the function that
lowers/raises the windows when opening/closing
the doors may not operate, even if the window slot
seal is of the latest generation. In freezing weather,
the window auto-drop function can be blocked by
snow and ice building up between the windows
and the outer window slot seals (Figure 1).
Figure 1. Snow and ice build-up on window and
window slot seal surfaces.
Page 1 of 3
© 2021 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.
Due to snow and ice adhesion the window and
window slot seal can be bonded, resulting in a
blockage that can render the window auto-drop
function inoperative (Figure 2).
Figure 2. Area where snow and ice can adhere,
disabling window operation.
Production Solution
Not applicable.
Service
1. With a plastic scraper, remove snow and ice from the windows as described in the owner’s manual.
2. If needed, spray an Audi approved solventfree de-icer on the windows to remove any
snow/ice from the contact area of the outer
window slot seal to the window (Figure 3).
Figure 3. Solvent-free de-icer spray melts snow and
ice and eliminates blockage.
Page 2 of 3
© 2021 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.
3. Check operation of doors and windows to ensure proper function of the window auto-drop function
when opening and closing the doors.
Tip: Parts replacement does not solve this issue. Claims for replaced parts will be subject to
review.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Additional Information
More information on this system can be found in the following resources:
 Owner’s Manual: chapter “Care and cleaning”.
All part and service references provided in this TSB (2062618) are subject to change and/or removal. Always
check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the
Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.
©2021 Audi of America, Inc. All rights reserved. The 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 of 3
© 2021 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.