A9122752024323_9

Technical Service Bulletin
91 Parking assistance provides false warnings
91 22 75 2024323/9 February 7, 2022. Supersedes Technical Service Bulletin Group 91 number 21-04 dated
May 18, 2021 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi
20052017
All
Parking Aid
Condition
REVISION HISTORY
Revision Date
Purpose
9
Revised header (Added model years and models)
-
Revised Service (Added environmental and vehicle conditions)
Revised Warranty (Added PIDs)
8
05/20/2021 Revised header (Added model years and models)
Revised Additional Information (Added reference)
7
01/25/2021 Revised header (Added model years and models)
The 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.
Page 1 of 11
© 2022 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 Service Bulletin
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.
Service
Various environmental conditions can cause false activations to be seen by the customer. In cases where the
customer is reporting several false activations (parking aid warning is displayed however nothing is around) the
below environmental and vehicle contributors should be checked.
Environmental Conditions
Page 2 of 11
© 2022 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 Service Bulletin
1.
Plants growing to certain heights, and curbs can lead to incorrect warnings being issued in the vicinity of the
vehicle.
2.
Gravel Tracks, cobblestones, potholes, cattle grids, sharp bends in the road, and slopes can lead to
incorrect warnings being issued.
3.
Various types of weather/ambient conditions can lead to functional issues:
• Water on the parking aid senders (widening of the radiation pattern).
• Ice/snow on the parking aid senders or in transition to the bumper.
• Vehicle exhaust gases and water vapor (bursts of heat caused by revving the engine) alter the physical
property of the air needed to transport the ultrasound of the parking aid system.
• Noise disturbance (pneumatic brakes of heavy goods vehicles, anti-rodent devices, or other active
ultrasound sources in the vicinity, such as parking aid systems in other vehicles).
4.
Immediate surroundings
• Fluorescent tubes.
• Induction loops at traffic lights and car park barriers.
• Ramps/Driveways.
Vehicle
1.
Check installation of the license plate and carrier with regard to the following points:
• If possible, do not use any advertising carriers.
• The size of the license plate must be identical to that of the base carrier.
• Ensure that the number plate and carrier are secured correctly at the side edges (edges bent upwards)
2.
Add-on parts/modifications/retrofits which are not Audi Genuine Accessories could lead to an erroneous
warning being issued.
• Trailer hitch.
• Lowered ride height.
• Spoilers.
• Bumpers.
• Sound generators.
• Anti-rodent devices.
3.
Previous damage where a new coat of paint has been applied (refer to repair history).
Page 3 of 11
© 2022 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 Service Bulletin
Checks without disassembly
Misaligned parking aid sensors or various vehicle mountings can cause parking aid malfunctions. This TSB
provides tips for diagnosing the parking aid systems.
1.
Confirm that there is no obvious obstruction 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 modules 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 4 of 11
© 2022 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 Service Bulletin
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. 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.
5. 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.
Page 5 of 11
© 2022 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 Service Bulletin
Figure 6. An incorrectly seated decoupling ring
(bulging).
Figure 7. An incorrectly seated decoupling ring
(folded).
Page 6 of 11
© 2022 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 Service Bulletin
6. 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.
Figure 9. An off-center parking aid sensor.
Page 7 of 11
© 2022 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 Service Bulletin
7. 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.
Figure 11. A recessed parking aid sensor.
8.
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 parking assistance sound generator for:
• Corrosion.
• Water ingress or water marks.
• Bent open pins.
• Pushed back pins.
Page 8 of 11
© 2022 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 Service Bulletin
• The correct fit of plug seal.
Tip: If a specific sensor is identified by the diagnostic tester, disagnose that specific sensor only.
9.
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.
10. 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.
Page 9 of 11
© 2022 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 Service Bulletin
Figure 15. A parking aid sensor connector that is
not seated correctly.
11. Re-evaluate the concern:
• If an issue was identified as environmental, or a vehicle issue from the above lists, educate the customer
on the limitations of the system.
• If all environmental and vehicle conditions have been ruled out and the concern persists, proceed as
follows:
• Isolate the vehicle to a known good area.
• Use MVB’s to determine the sensor(s) affected.
• Thoroughly check the affected sensor circuit.
• Swap affected parking aid sensors or control modules as needed.
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:
If the issue is caused by:
Parking aid sensor
9175
Parking aid module
9174
Wire harness to the sensor
9759
Damage Code:
0040
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
Page 10 of 11
© 2022 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 Service Bulletin
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)
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 2024323/9
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.
©2022 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 11 of 11
© 2022 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.