A6921692056406_2

69 Airbag warning light on, DTC B13BCF2 stored in the airbag control module
69 21 69 2056406/2 September 14, 2021. Supersedes Technical Service Bulletin Group 69 number 19-43 dated
October 10, 2019 for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All
2015 - 2022
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised header (Added Model Years 2021 – 2022 and corrected an Elsa
display issue)
1
10/10/2019
Initial publication
Customer states:
 The airbag warning light is illuminated in the instrument cluster.
Workshop findings:
The following DTC is stored in the airbag control module, J234, (address word 0015):
 DTC B13BCF2 (Multiple collision brake No function) and can be active/static or passive/sporadic.
Technical Background
The “Multiple collision brake” is controlled by the ABS control module, J104, (address word 0003) and part of the
ABS/ESC functionality.
If the ABS control module detects an ABS/ESC relevant error, the “Multiple collision brake” is deactivated. In
addition, the ESC and airbag warning lights are turned on in the instrument cluster and DTC B13BCF2 is stored in
the airbag control module.
If the brake system relevant error is passive/sporadic and not detected again, the ESC warning light is turned off
after the next ignition cycle. Any DTCs that were stored in the ABS control module will be erased after 40 ignition
cycles if not detected again.
In contrast, the airbag warning light will stay on permanently until the DTC B13BCF2 in the airbag control module
is erased manually. The “Multiple collision brake” will stay deactivated as long as DTC B13BCF2 is stored in the
airbag control module.
Page 1 of 3
© 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: The airbag warning light indicates that the “Multiple collision brake” has been deactivated by the brake
control module. It is a symptom/indicator, not the root cause for the deactivation.
Production Solution
Not applicable.
Service
1. Connect vehicle to ODIS Service and perform a scan with GFF. Follow GFF for any DTCs that could have
caused a deactivation of ABS/ESC functionality. If these DTCs are present, follow GFF to determine and
eliminate the root cause. Once the root cause has been eliminated, delete DTC B13BCF2 in the airbag
control module.
2. If no DTCs were present that could explain the deactivation of ABS/ESC functionality, erase the DTC
B13BCF2 in the airbag control module.
3. Release the vehicle to the customer without attempting any additional repairs.
4. If the customer experiences this concern again, a vehicle scan with GFF should be performed immediately to
determine the root cause.
Note:
Replacing the airbag control module does not solve this issue. Claims for replaced parts will be subject to
review.
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:
6953
Damage Code:
0039
Diagnostic Time:
GFF
0150 0000
Time stated on
the diagnostic
Page 2 of 3
© 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.
protocol (Max 50
TU)
Claim Comment:
Road test prior to the service
procedure
0121 0002
10 TU
Road test after the service
procedure
0121 0004
10 TU
As per TSB #2056406/2
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 parts and service references provided in this TSB (2056406) 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
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 3 of 3
© 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.