A6924072056421_8

Technical Service Bulletin
69 Seat belt warning or Pre Sense warning appears sporadically while driving, DTC B101C07 stored in the
airbag module
69 24 07 2056421/8 February 23, 2024. Supersedes Technical Service Bulletin Group 69 number 23-94 dated
July 21, 2023 for reasons listed below.
Model(s)
Year
A6, A7, A8, and
Q8
2019 – 2024
A6 allroad, S6,
S7, S8, Q7, SQ7, 2020 – 2024
SQ8, and RS Q8
A8 e quattro
2020 – 2021
RS 6 Avant, and
RS 7
2021 – 2024
A7 e quattro
2021 – 2022
VIN Range
Vehicle-Specific Equipment
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
8
-
Revised header (Add Model Year 2024)
7
07/21/2023
Republish to correct Elsa display issue
6
12/23/2021
Revised header (Add Model)
Customer states:
• While driving, the seat belt and/or the PreSense warning may appear sporadically in the driver information
system (DIS).
Workshop findings:
The following DTC is stored in the airbag control module/safety computer, -J234- (address word 0015):
• DTC B101C07 (Driver seat belt switch mechanical malfunction).
Technical Background
The Safety Computer continuously monitors the status of the seat belt latch switch, E24. If a seat belt extender, a
seat belt cheat device is installed, or if the seat belt is continuously buckled, the Safety Computer receives the
constant signal that the seat belt is latched. If the Safety Computer does not see a change in the belt latch switch
© 2024 Audi of America, Inc.
Internal
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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
signal within five drive cycles, it stores DTC B101C07, and the PreSense Warning appears in the DIS in the
assumption that a seat belt cheat device is installed.
A drive cycle consists of:
1. Unlock the door.
2. Open the door.
3. Close the door.
4. Latch the seat belt.
5. Turn on the ignition and drive.
6. Park.
7. Unlatch the seat belt.
8. Turn off the ignition.
9. Open the door.
10. Close the door.
11. Lock the door.
Production Solution
Not applicable.
Service
1. Connect the vehicle to ODIS Service and perform GFF.
2. If the DTC B101C07 is stored in the airbag control module/safety computer, then fallow all applicable GFF test
plans.
3. If the GFF indicates that the seat belt latch switch is not defective, inform the customer that the use of a seat
belt extender, seat belt cheat device, or leaving the seat belt continuously buckled could cause this concern.
4. One drive cycle with latching and unlatching the seat belt is sufficient to switch the DTC B101C077 from static
to sporadic, and to turn off the PreSense warning in the instrument cluster.
The risk of serious or fatal injury increases if the seat belt is not fastened, if it is worn incorrectly, or if it
is damaged.
• See the Owner’s Manual for additional information and warnings.
Parts replacement does not solve this issue. Claims for replaced parts will be subject to review.
© 2024 Audi of America, Inc.
Internal
Page 2 of 3
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
This TSB is informational only and not applicable to any Audi Warranty.
Additional Information
All parts and service references provided in this TSB (2056421) 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.
©2024 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.
© 2024 Audi of America, Inc.
Internal
Page 3 of 3
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.