Technical Service Bulletin
91 Rear parking sensor sometimes does not work, rear parking sensor loose, rear parking sensor fault
message
91 24 92 2068573/4 December 9, 2024. Supersedes Technical Service Bulletin Group 91 number 24-46 dated
August 30, 2024 for reasons listed below.
Model(s)

Year

All Audi Vehicles 2019 – 2024

VIN Range

Vehicle-Specific Equipment

All

Not Applicable

Condition
REVISION HISTORY
Revision

Date

Purpose

4

-

Revised Service (Adjusted customer statement and service
instructions)

3

08/30/2024

Revised Service (Adjusted customer statement and service
instructions)
Revised Warranty (Updated warranty table)

2

06/12/2023

Revised header (Included all current models 2019 -2024)
Revised Parts and Tools (Adjusted epoxy quantity to 1 and removed
mixing nozzle)

Customer states:
Rear parking sensor sometimes not working, rear parking sensor is loose, fault message for rear parking sensor.
Workshop findings:
The retaining plate for the parking sensor has come loose from the rear apron.

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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 1
The adhesive strength of the
parking aid bracket is not
sufficient.
Over time, one or more of the
sensor mounts may separate
from the rear apron.

Figure 1: The parking aid mount has come loose.
It is possible for the parking aid
sensor(s) to issue false
warnings when the mounts start
to separate.
For a customer concern relating
to false detection of obstacles it
is important to check each of the
sensors on the rear apron for
correct installation.

Figure 2: The parking aid mount has come loose.

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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
Production Solution
Process optimized for vehicles currently in production.

Service
If one or more of the sensor brackets has come loose from the rear bumper, use the steps below to re-attach the
mounts.
When billing, please always attach photos/videos that clearly shows the complaint to DOC-IT. To ensure a
reference to the vehicle, the image/video must:
•

Include the VIN and date.

•

Must not be edited.

•

Should be in focus and taken with sufficient light. A high resolution is not necessary.

If appropriate, please mark the location of the problem so that parts analysis has a clear reference to the
complaint. Please ensue that the photo documentation does not show any persons and/or face, license plates, or
customer data.
Prep work:
•

Remove the rear bumper cover according to the repair manual.

Note: If multiple brackets are loose, ensure each bracket stays in the same position. Each
mount needs to be re-bonded in the same position and orientation to the rear apron.
•

Remove old adhesive tape from bonding surfaces on inside of rear apron/spoiler and on affected
brackets.

•

Lightly sand/scuff the bonding surfaces of the apron and mount(s).

•

Clean the rear apron and mount(s) thoroughly with plastic cleaner D 009 401 04 or equivalent
(isopropyl alcohol) and allow to dry for 5 minutes.

•

Apply a thin coating of primer for plastic components D 822 150 A1 to rear apron and bracket,
allow to dry for 10 minutes.

•

Prepare all affected brackets up to this step prior to bonding.

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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
Tool Setup:
•

Special tool VAS 6614/C will be
used to complete this repair.

•

Inside there are 3 sets of
holders in various diameters to
accommodate different size
PDC sensors.

•

Use the appropriately sized
holder to center and clamp the
mounts.

Figure 3: VAS 6614/C contents.

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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
•

Depending on the installation depth
of the parking sensor mounting, it
may be necessary to place a
backing in the gap between the
bracket and the bumper cover.

•

Check the installation depth of the
parking sensor in the bumper cover
for protrusion.

•

In the event of protrusion, a backing
must be used (e.g. double-sided
adhesive tape as a spacer).

•

Slide bracket -6- onto centering pin
-3- (VAS 6614) and push through
rear apron/spoiler.

•

Slide on counter hold tool -2- from
outside and tighten knurled nut
slightly.

•

Align bracket -6- in correct position
and according to markings on rear
apron/spoiler.

•

Slide on clamp -4- and screw in
knurled nut -5- but do not tighten
yet.

•

Prepare all affected brackets up to
this step prior to bonding.

Figure 4: VAS 6614 assembled with PDC mount on rear
apron.

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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
Bonding the mount(s):
Apply plastic adhesive D 180 KU2 A1 to
areas marked by arrows between the
parking aid bracket and rear apron
(Figure 5).
•

The first 3-5 cm of adhesive from
the mixing nozzle may not be
properly mixed and must therefore
be discarded.

•

The adhesive must not be allowed
to run into the groove on the
bonding surface on the bracket.

Figure 5: Arrows mark location for adhesive.
•

Tighten knurled nut -3- at centering
pin -1-.

•

This results in clamp -2- pushing
tabs of bracket -4- flat onto rear
apron/spoiler -5-.

•

Perform this step for all affected
brackets.

Figure 6: Mounts compressed to spoiler.
•

After minimum drying time of 30 minutes for 2-component plastic adhesive D 180 KU2 A1,
remove all centering pins.

•

The rear apron must be left undisturbed during this period and must not be moved.

•

Re-Install the rear bumper cover and confirm system operation.

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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
Warranty
Claim Type:

•

Service Number:

9175

Damage Code:

0018

Labor Operations:

Remove and install rear bumper cover

6369 19xx

See SRT with
associated
operations

Modify/bond on 1 sensor/bracket

9175 4999

50 TU

Modify/bond on all other sensors/brackets

9175 5099

20 TU

Claim Comment:

If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

As per TSB 2068573/4

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.

Required Parts and Tools
The part numbers mentioned in this TSB are different from the ones listed in ETKA. Only use parts listed
in this TSB, this includes superseding part numbers!
Part Number

Part Description

Quantity

See ETKA

Fasteners, Bolts, Nuts, and Screws as needed per the Repair
Manual

See ETKA/ELSA

D180KU2A1

Plastic adhesive

1

D822150A1

Primer

0.1

D 00940104

Plastic cleaner or equivalent (isopropyl alcohol)

0.1

Tool Number

Tool Description

VAS 6614C

PDC holder tool set

VAS 5155

Hand cartridge gun

VAS 6160/VAS 6150

VAS tester with the current version of ODIS (Windows 10)

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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 (2068573) are subject to change and/or removal.
©2024 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.

© 2024 Audi of America, Inc.
Internal

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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.