66 Wheel arch trim on the rear door is loose
66 21 76 2064998/1 November 12, 2021.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

Q8

2019 - 2021

All

Not Applicable

SQ8, RS Q8

2020 - 2021

All

Not Applicable

Condition
Customer states:
 The wheel arch trim over either rear wheel is loose, specifically the section of the trim affixed to the door.
Workshop findings:
 The bond has failed for this section of the wheel arch trim.

Technical Background
1. Figure 1 shows the specific section of the rear wheel
arch trim that may have debonded.

Figure 1. Rear wheel arch trim section affixed to rear
door at issue.

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© 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.

2. Figure 2 depicts a loose wheel arch trim section as it
may be discovered.

Figure 2. Debonded rear wheel arch trim section.
3. Figure 3 depicts an alternative view of a debonded
rear wheel arch trim.

Figure 3. Debonded rear wheel arch trim section.

Production Solution
The trim bonding process has been improved in production.

Page 2 of 5
© 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.

Service
Replace the affected wheel arch trim using the repair process in ElsaPro. Pay particular attention to the surface
preparation of the bonding surface on the door. Ensure it is entirely free of any contamination that could
compromise the adhesion of the new wheel arch trim section.
Since the issue described in this TSB can affect either the right or the left side inspect the bonding integrity of the
opposite side of the side being repaired. Address if necessary.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.

Service Number:

6645

Damage Code:

0018

Labor Operations:

Rear wheel housing cover – rear door, remove 6645 1902
and reinstall

See SRT with
associated
operations

-or-

Sublet Operations:

Rear wheel housing cover – both rear doors,
remove and reinstall

6645 2002

See SRT with
associated
operations

Paint new part

A000 1600

Max $87.00

GFF

No allowance

0 TU

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

No allowance

0 TU

(Labor Operation listed in Outside Labor)
Diagnostic Time:

Claim Comment:

As per TSB #2064998/1

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures
Manual. Claims are subject to review or audit by Audi Warranty.

Page 3 of 5
© 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.

Required Parts and Tools
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number

Part Description

Quantity

4M8854819A

Wheel cover left rear door - Primed

01

4M8854819C

Wheel cover left rear door – Primed (RS Q8)

01

4M8854820A

Wheel cover right rear door - Primed

01

4M8854820C

Wheel cover right rear door – Primed (RS Q8)

01

Tool Number

Tool Description

3356

Roller
VAS 1978/14A

Wiring Harness Repair Set – Hot Air Blower

Page 4 of 5
© 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.

T10383

Wedge Set

Additional Information
All parts and service references provided in this TSB (2064998) are subject to change and/or removal.
©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 5 of 5
© 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.