A9121042024323_8

91 Parking assistance provides false warnings
91 21 04 2024323/8 May 18, 2021. Supersedes Technical Service Bulletin Group 91 number 21-64 dated
January 25, 2021 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All others
2005 - 2023
All
Not Applicable
Audi e-tron
quattro
2019 - 2021
All
Not Applicable
Audi e-tron
Sportback
2020 - 2021
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
8
-
Revised header (Added model years and models)
Revised Additional Information (Added reference)
7
01/25/2021
Revised header (Added MY21 - 22)
6
09/12/2019
Revised header (Corrected Elsa display issue)
Revised Service (Added Tip)
Customer states one of the following:
 Parking aid sporadically warns of obstacles when none exist.
 Parking aid is inoperative or provides a constant warning.
Page 1 of 12
© 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.
Technical Background
 Various parking aid sensor fitting issues.
 Environmental conditions.
Please review the informational video before attempting the repair
procedure: https://audi-external.kzoplatform.com:443/swf/player/342
(Figure 1).
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.
Page 2 of 12
© 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
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.
 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.
Page 3 of 12
© 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.
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.
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.
Page 4 of 12
© 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.
7. Check that the decoupling ring is correctly seated
(Figures 5 - 7). If the ring is folded or bulging, remove
the bumper and reinstall the sensor.
Figure 5. A correctly seated decoupling ring.
Figure 6. An incorrectly seated decoupling ring
(bulging).
Page 5 of 12
© 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.
Figure 7. An incorrectly seated decoupling ring
(folded).
8. Verify that the sensor is centered inside of the
mounting hole (Figures 8 - 9). If the sensor is mounted
off-center, remove the bumper and reinstall the sensor.
Figure 8. A correctly centered parking aid sensor.
Page 6 of 12
© 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.
Figure 9. An off-center parking aid sensor.
9. Ensure the sensor sits flush with the bumper (Figures
10 - 11). If the sensor is recessed or bulging, remove
the bumper and reinstall the sensor.
Figure 10. A correctly installed parking aid sensor.
Page 7 of 12
© 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.
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
module 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 8 of 12
© 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.
12. Check the cables in the bumper for damage and
sufficient length (Figures 12 - 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.
Page 9 of 12
© 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.
13. Check the connectors on the parking sensors and the
socket box for correct installation (Figures 14 - 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:
 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, and 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.).
Page 10 of 12
© 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.
 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 with
associated
operations
Remove and install the front parking aid
sensor
9175 XXXX
See SRT with
associated
operations
Remove and install the rear bumper
6369 19XX
See SRT with
associated
operations
Remove and install the front bumper
6329 19XX
See SRT with
associated
operations
Lane Change Assist recalibration
9635 XXXX
See SRT with
associated
operations
Repair wiring harness
9175 4199
Max 30 TU
GFF
0150 0000
Time stated on
diagnostic
protocol (Max 30
TU)
(if necessary)
Diagnostic Time:
Page 11 of 12
© 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.
Claim Comment:
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
No allowance
0 TU
As per TSB #2024323/8
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
The following Technical Service Bulletin(s) will be necessary to complete this procedure:
 TSB 2039206, 00 How to watch TSB videos.
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.
©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.
Page 12 of 12
© 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.