A911374 2024323-

Technical Service Bulletin
91 Parking assistance provides false warnings
91 13 74 2024323/3 February 5, 2013. Supersedes Technical Service Bulletin Group 91 number 12-61 dated
October 1, 2012 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi
2005-2014
All
Parking Aid
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header data (Added model years)
Revised Service (Added info about stone chips)
2
10/1/2012
Revised header data (Added model years and models)
1
9/28/2010
Original publication
Customer states one of the following:
• Parking aid sporadically warns of obstacles when none exist.
• Parking aid is inoperative or provides constant warning.
Technical Background
• Various parking aid sensor fitting issues.
• Environmental conditions.
Production Solution
Not applicable.
© 2013 Audi of America, Inc.
Page 1 of 9
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
Service
Misaligned parking aid sensors or various vehicle mountings can cause parking aid malfunctions. This TSB
provides diagnosis tips related to parking aid systems.
1. Verify that the coding within J446 – Parking Aid Control Module is valid for the equipment installed on the
vehicle (i.e.: trailer hitch, tow bar, etc.).
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 J446 – Parking Aid Control Module starting
with MVBs for oscillation.
MVBs for internal sensor oscillation (if applicable) (acceptable values = 0.8 to 1.5ms). If the
oscillation is not within specification, proceed to step 10.
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- or 8-channel parking aid systems. Refer to ElsaWeb for
vehicle-specific information.
3. Check parking sensors for obvious issues:
• Mechanical damage (stone chips, scratches).
• Dirt, ice, foreign bodies, foil adhered to sensor.
• Damage to the bumpers that may indicate an
accident (or paint indicating a previous incident).
Figure 1. 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.
© 2013 Audi of America, Inc.
Page 2 of 9
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
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-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. If the sensor is not snug or feels
loose, remove the bumper and reinstall the sensor.
Figure 2. A pressure check on a parking aid
sensor.
7. Check that the decoupling ring is correctly seated. If
the ring is folded or bulging, remove the bumper and
reinstall the sensor.
Figure 3. A correctly seated decoupling ring.
© 2013 Audi of America, Inc.
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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
Figure 4. An incorrectly seated decoupling ring
(bulging).
Figure 5. An incorrectly seated decoupling ring
(folded).
© 2013 Audi of America, Inc.
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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
8. Verify that the sensor is centered inside of the
mounting hole. If the sensor is mounted off-center,
remove the bumper and reinstall the sensor.
Figure 6. A correctly centered parking aid sensor.
Figure 7. An off-center parking aid sensor.
9. Ensure the sensor sits flush with the bumper. If the
sensor is recessed or bulging, remove the bumper and
reinstall the sensor.
Figure 8. A correctly installed parking aid sensor.
© 2013 Audi of America, Inc.
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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
Figure 9. 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, proceed 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.
• Correct fit of plug seal.
Tip: If a specific sensor is identified by the diagnostic tester, proceed forward for that specific sensor
only.
12. Check the cables in the bumper for damage and
sufficient length. 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 10. A correctly installed cable with
sufficient length.
Figure 11. A sensor cable with insufficient length.
© 2013 Audi of America, Inc.
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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
13. Check the connectors on the parking sensors and the
socket box for correct installation. If the connectors are
not installed properly, reinstall.
Figure 12. A correctly installed parking aid sensor
connector.
Figure 13. 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 issue is identified,
remedy the concern, and 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, pot holes, grates, sharp bends in the road, slopes, driveways or
ramps.
• Water on the parking sensors.
• Ice, 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.
© 2013 Audi of America, Inc.
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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
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:
Use applicable claim type. If vehicle is outside any warranty, this Technical Service Bulletin
is informational only.
Service Number:
9175
Damage Code:
0010
Labor Operations:
Remove and install rear parking aid sensor
9175 XXXX
See Elsa Web for
applicable TUs
Remove and install front parking aid sensor
9175 XXXX
See Elsa Web for
applicable TUs
Remove and install rear bumper
6369 19XX
See Elsa Web for
applicable TUs
Remove and install front bumper
6329 19XX
See Elsa Web for
applicable TUs
Lane Change Assist recalibration
9635 XXXX
70 TU
Repair wiring harness
9175 4199
Max 30 TU
GFF
0150 0000
Time stated on
diagnostic
protocol, max 30
TUs
Road test prior to service procedure
No allowance
0 TU
Road test after service procedure
No allowance
0 TU
(if necessary)
Diagnostic Time:
Technical diagnosis at dealer’s discretion
(Refer to Section 2.2.1.2 and Audi Warranty Online for DADP allowance details)
Claim Comment:
As per TSB #2024323/3
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.
© 2013 Audi of America, Inc.
Page 8 of 9
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 are subject to change and/or removal. Always check with
your Parts Department and service manuals for the latest information.
© 2013 Audi of America, Inc.
Page 9 of 9
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.