96 Intersection assist/lane change assist are inop, DTC C12BFF0 is stored in the lane change module or
the radar sensor
96 21 70 2063336/1 June 10, 2021.
Model(s)

Year

VIN Range

Vehicle-Specific Equipment

A8, S8

2018 - 2023

All

Audi virtual cockpit

A6, A7, Q8

2019 - 2023

All

Audi virtual cockpit

A6 allroad,
S6, RS 6,
S7, RS 7,
A8 PHEV,
Q7, SQ7,
SQ8, RS
Q8, Audi etron quattro,
and Audi etron
Sportback

2020 - 2023

All

Audi virtual cockpit

A6 Avant,
RS 6 Avant,
A7 PHEV

2021 - 2023

All

Audi virtual cockpit

Condition
Customer states:
The intersection/lane change assist are inop. One of the following messages are shown in the instrument cluster:
 “Intersection assist: fault. Please contact workshop.”
 “Side assist and exit warning system: fault. Please contact workshop.”
 “Rear cross-traffic assist: fault. Please contact workshop.”
 “Audi pre sense: fault. Please contact workshop.”
Workshop findings:
The following DTC may be stored in one of the lane change assist control modules, J769/J770 (address word
003C/00CF) or the radar sensor control module for object detection, J1088/J1089 (address word 00DB/00DC):
 DTC C12BFF0 (Radar sensor automatic calibration not possible).

Technical Background
The sensors listed above are calibrated continuously in relation to the detected surroundings when the vehicle is
being driven at a speed above a defined threshold.

Page 1 of 4
© 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.

If the calculated dynamic angle offset exceeds +/-5°during this automatic calibration process, the DTC specified
above is logged and the corresponding messages appear in the instrument cluster.

Production Solution
Not applicable.

Service
The following possible causes are known for this behavior:
 Sensors which are loose or not fully seated in their mounts.
 Incomplete calibration of sensors after sensor replacement.
 Decals/stickers/NFC tags in sensor field of view (either on the inside or on the outside of the bumper cover).
 Excessive dirt in sensor field of view (either on the inside or on the outside of the bumper cover).
 Damage to bumper cover in sensor field of view.
 Inadequate paintwork (paint repairs) on bumper cover in sensor field of view.
 Non-conforming paintwork on the inside or outside of the bumper cover.
Please check whether the possible causes listed above apply here and remedy these issues yourself.
If the cause cannot be clearly identified and calibration of the affected sensor fails, please observe the following
procedure:
1. Remove the corresponding sensor from its mount and then reseat it. Then perform calibration again.
2. If calibration fails again, swap the sensors on the left and right sides of the vehicle. Please note: After
switching the sensors around, full replacement procedure must be performed using ODIS-S so that the correct
data set which is required for subsequent calibration is available on the sensors. After successful activation,
perform calibration again.
Tip: To calibrate the sensors, the dynamic calibration procedure should preferably be used.
Tip: Replacing the corresponding radar sensor without clear findings will NOT resolve the issue.

Warranty
Claim Type:

 110 up to 48 Months/50,000 Miles.
 G10 for CPO Covered Vehicles – Verify Owner.

Page 2 of 4
© 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.

 If the vehicle is outside any warranty, this Technical Service Bulletin is informational
only.
Service Number:

9635

Damage Code:

0010

Labor Operations:
(as required
depending on the
affected control
module)

Remove and install lane change assist control
unit

9635 19XX

See SRT with
associated
operations

Remove and install object detection control
unit

9158 19XX

See SRT with
associated
operations

Remove and install 2 lane change assist
control units

9635 20XX

See SRT with
associated
operations

Remove and install 2 object detection control
units

9158 20XX

See SRT with
associated
operations

GFF

0150 0000

Time stated on
the diagnostic
protocol (Max 90
TU)

Road test prior to the service procedure

No allowance

0 TU

Road test after the service procedure

0121 0004

10 TU

Diagnostic Time:

Claim Comment:

As per TSB #2063336/1

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 (2063336) 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. 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
© 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.

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
© 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.