A9120262058769_3

91 Parking aid sporadically does not work, DTC B107BF0 or B10FCF0 stored in the driver assist systems
91 20 26 2058769/3 November 6, 2020. Supersedes Technical Service Bulletin Group 91 number 20-93 dated
August 11, 2020 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
Q7, Audi etron
Sportback
2020 - 2021
All
Driver Assist Systems
A6, A7, A8,
Q8, and
Audi e-tron
quattro
2019 - 2021
All
Driver Assist Systems
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header (Updated applicable vehicles)
2
08/11/2020
Revised Technical Background (Updated symptom code)
1
03/10/2020
Initial publication
Customer states:
 The warning message “Front/rear parking aid: Sensor view restricted because of environmental factors No
obstacle warning” appears in the instrument cluster relating to the parking aid system.
Workshop findings:
 The message is reproducible.
One of the following DTCs are stored in the control module for driver assist systems, J1121 (address word 00A5):
 DTC B107BF0 (Rear parking aid sender, malfunction because of environment influences) with symptom code
233479 or 233473.
Or
 DTC B10FCF0 (Front parking aid sender, malfunction because of environment influences) with symptom code
233523 or 233472.
Page 1 of 4
© 2020 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
The new 6th generation ultrasound parking aid sensors are fitted for the first time at the introduction of the 2019
A8 (type 4N).
Within the limits of this new system there is the ability to detect problems due to external influence such as dirt,
ice, and external ultrasound signals.
When the system detects such problems the system is made temporarily unavailable in order to prevent false
warnings to the driver. When this occurs a message is displayed to the driver in the instrument cluster.
Below are examples based on the symptom code found with DTC B107BF0 or B10FCF0:
 Symptom 233479/233523: Temporary partial availability of the system because of environmental influences
(e.g. external ultrasound signal, street sweeper, construction equipment etc.).
 Symptom 233473/233472: Temporary partial availability of the system because of environmental influences
(e.g. dirt/ice).
Production Solution
Not applicable.
Service
Perform the following checks on the respective ultrasound sensors (depending on DTC):
 Check for dirt, ice, foreign objects, stickers, and a properly fit license plate.
 Check for damage on the bumper, air intake grille, and underbody which indicates an impact during parking.
 Check for mechanical damage (stone chips and scratches).
 Check the fit of the sensors, bumpers, and trim in the surrounding areas.
 Check the measured value block "Vibration time of parking aid sender" in the control module for driver assist
systems, J1121 (address word 00A5) for a cyclic/dynamic change of the respective measured values when
approaching an obstacle.
Scenario 1. If the concern occurs sporadically: No further measures are necessary, as it is caused by
environmental influences.
Note:
In this case, replacement of the driver assistance systems J1122 without clear findings is not effective. Part
replacement of the J1121 does not solve this issue. Claims for replaced parts will be subject to review.
Page 2 of 4
© 2020 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.
Scenario 2. If the concern is reproduced or is static: One of the ultrasound sensors, mountings or circuits may
be faulty. If this is the case, proceed with standard diagnosis.
Note:
An indicator a malfunction may be present is a significantly increased frequency counter within the standard
ambient conditions of the respective fault code.
Warranty
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:
0040
Labor Operations:
Checking of the parking aid sensor
9175 0199
20 TU
Diagnostic Time:
GFF
0150 0000
Time stated on
the diagnostic
protocol (Max 100
TU)
Road test prior to the service procedure
No allowance
0 TU
Road test after the service procedure
No allowance
0 TU
Claim Comment:
As per TSB #2058769/3
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.
Additional Information
All part and service references provided in this TSB (2058769) 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.
©2020 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
Page 3 of 4
© 2020 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.
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 4 of 4
© 2020 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.