91 Parking assistance provides false warnings
91 19 88 2024323/6 September 12, 2019. Supersedes Technical Service Bulletin Group 91 number 17-36 dated
July 26, 2017 for reasons listed below.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

All

2005 - 2020

All

Not Applicable

Condition
REVISION HISTORY
Revision

Date

Purpose

6

-

Revised header (Corrected Elsa display issue)
Revised Service (Added Tip)

5

07/26/2017

Revised header (Added model years)
Revised Technical Background (Added QR codes)
Revised Warranty (Added Claim Types and updated Labor Operation)

4

01/05/2015

Revised header (Added models and model years)

Customer states one of the following:
 Parking aid sporadically warns of obstacles when none exist.
 Parking aid is inoperative or provides a constant warning.

Technical Background
 Various parking aid sensor fitting issues.
 Environmental conditions.

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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.

Please review the informational video before attempting the repair
procedure: https://audi-external.kzoplatform.com:443/swf/player/342
(Figure1).

Figure 1. False parking system
warnings.
Please review the informational video before attempting the repair
procedure: https://audi-external.kzoplatform.com:443/swf/player/343
(Figure 2).

Figure 2. Parking system malfunctions.

Production Solution
Not applicable.

Service
Misaligned parking aid sensors or various vehicle mountings can cause parking aid malfunctions. This TSB
provides tips for diagnosing parking aid systems.
1. Confirm there is no obvious obstructions due to aftermarket components, physical vehicle damage,
excessive dirt/snow, or stickers.
2. Check the vehicle fault memory and proceed according to GFF.

Page 2 of 10
© 2019 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.

 If GFF identifies a problem with a specific sensor, proceed with the test plan.
 If GFF does not identify a specific sensor, check MVBs in the master module for the parking aid sensors.
Based on the vehicle, these can be found in the guided functions or OBD of module 09, 76 or A5.
Tip: Below is an example of module 76 MVB. When diagnosing the system you can check the response
values for the sensors. Compare the sensor values to one another while moving a test object closer/further
away, they should all respond similarly.
MVBs for distance calculations (255 = no obstruction). If an obstruction is identified but none exists, proceed
to step 3.
Tip: Vehicles can be equipped with 4, 8 or 12 channel parking aid systems. Refer to Elsa for vehiclespecific information.
3. Check parking sensors (Figure 3) for
obvious issues:
 Mechanical damage (stone chips,
scratches).
 Dirt, ice, foreign bodies, and/or foil
adhered to the sensor.
 Damage to the bumpers that may
indicate an accident (or paint indicating
a previous incident).


Figure 3. Stone chips causing sensor failure.
Tip: Exterior damage to the vehicle, including stone chips and scratches, is not covered by Audi Warranty.
When painting sensors, the special painting instructions for parking sensors in the paint repair manual must be
observed.
4. Check for non-Audi Genuine Accessories which can interfere with parking aid operation, including:
 Aftermarket towing bar.
 Aftermarket lowering kit.
 Aftermarket spoiler or air deflector.
 Aftermarket bumper.

Page 3 of 10
© 2019 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.

5. For 8 and 12 channel systems, check the installation of the front license plate holder for:
 Protrusion. The license plate and holder must fit on flat.
 Bent corners. Any bent-open corners may cause false readings.
 Correct fit. Oversized license plate holders or frames can obstruct parking aid sensors.
6. Pressure check for a tight fit and correct
attachment of the parking sensors (Figure
4). If the sensor is not snug or feels loose,
remove the bumper and reinstall the
sensor.

Figure 4. A pressure check on a parking aid sensor.
7. Check that the decoupling ring is correctly
seated (Figure 5, Figure 6, and Figure 7). If
the ring is folded or bulging, remove the
bumper and reinstall the sensor.

Figure 5. A correctly seated decoupling ring.

Page 4 of 10
© 2019 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.

Figure 6. An incorrectly seated decoupling ring (bulging).

Figure 7. An incorrectly seated decoupling ring (folded).

Page 5 of 10
© 2019 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.

8. Verify that the sensor is centered inside of
the mounting hole (Figure 8 and Figure 9).
If the sensor is mounted off-center, remove
the bumper and reinstall the sensor.

Figure 8. A correctly centered parking aid sensor.

Figure 9. An off-center parking aid sensor.

Page 6 of 10
© 2019 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.

9. Ensure the sensor sits flush with the
bumper (Figure 10 and Figure 11). If the
sensor is recessed or bulging, remove the
bumper and reinstall the sensor.

Figure 10. A correctly installed parking aid sensor.

Figure 11. A recessed parking aid sensor.
10. Re-evaluate the concern:
 If an issue was identified and the concern was remedied, proceed to step 15.
 If no issues were identified and the concern cannot be duplicated, proceed to step 15.
 If the concern still persists, continue to step 11.
11. Remove the bumper and check the connectors on the sensors, the socket box of the bumper, on the control
unit for parking assistance and on the sound generator of the parking assistance for:
 Corrosion.
 Water ingress or water marks.
 Bent-open pins.
 Pushed-back pins.
 The correct fit of plug seal.
Tip: If a specific sensor is identified by the diagnostic tester, proceed forward for that specific sensor
only.

Page 7 of 10
© 2019 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.

12. Check the cables in the bumper for
damage and sufficient length (Figure 12
and Figure 13). Cables that are too short
can cause damage to the harness.
 If the cable is damaged, repair the cable
using VAS Repair Kit 1978.
 If the cable is too tight, correct the
routing by moving the support clip so
the cable is no longer under tension.


Figure 12. A correctly installed cable with sufficient length.

Figure 13. A sensor cable with insufficient length.
13. Check the connectors on the parking
sensors and the socket box for correct
installation (Figure 14 and Figure 15). If the
connectors are not installed properly,
reinstall.

Figure 14. A correctly installed parking aid sensor connector.

Figure 15. A parking aid sensor connector that is not seated
correctly.
14. Re-evaluate the concern:

Page 8 of 10
© 2019 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.

 If an issue was identified and the concern was remedied, proceed to step 15.
 If the concern still persists, swap affected parking aid sensors or control modules until the issue is
identified, remedy the concern, then proceed to step 15.
15. Various environmental factors can cause incorrect warnings. Notify the customer that the following may
affect parking aid operation:
 High plants and curbs.
 Gravel paths, cobblestone paths, potholes, grates, sharp bends in the road, slopes, driveways, or ramps.
 Water on the parking sensors.
 Ice or snow on the parking sensor or the bumper.
 Exhaust gases of the vehicle under certain weather conditions.
 Conflicting ultrasound sources (pneumatic brakes on trucks, animal alarms, parking aid systems of other
vehicles, etc.).
 Fluorescent lighting.

Warranty
Accounting for an incorrectly fitted license plate holder or for cleaning the sensors is not permitted under warranty.
For the potential remounting of parking assist sensor, replacing of the parking assist sensor bracket, or repairing
system wiring:

Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.
 If the vehicle is outside any warranty, this Technical Service Bulletin is
informational only.

Service Number:

9175

Damage Code:

0010

Labor Operations:

Remove and install the rear parking aid
sensor

9175 XXXX

See SRT

Remove and install the front parking aid
sensor

9175 XXXX

See SRT

Remove and install the rear bumper

6369 19XX

See SRT

Page 9 of 10
© 2019 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.

Remove and install the front bumper

6329 19XX

See Elsa

Lane Change Assist recalibration

9635 XXXX

See SRT

Repair wiring harness

9175 4199

Max 30 TU

GFF

0150 0000

Time stated on
diagnostic
protocol (Max 30
TU)

Road test prior to service procedure

No allowance

0 TU

Road test after service procedure

No allowance

0 TU

(if necessary)

Diagnostic Time:

Claim Comment:

As per TSB #2024323/6

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.

Additional Information
All parts and service references provided in this TSB (2024323) 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.
©2019 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.

Page 10 of 10
© 2019 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.