A6920572056421_3
Service Bulletin Details
Public Details for: A6920572056421_3
This informational bulletin contains instructions on when dtc B101C07 is stored in the airbag control module/ safety computer.
Models from 2019
2019 AUDI A6 |
2019 AUDI A7 |
2019 AUDI A8 |
2019 AUDI E-TRON |
2019 AUDI Q8 |
69 Seat belt warning or Pre Sense warning appear sporadically while driving, DTC B101C07 stored in the airbag module 69 20 57 2056421/3 August 31, 2020. Supersedes Technical Service Bulletin Group 69 number 20-46 dated February 6, 2020 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment Q7 2020 - 2021 All Not Applicable A6, A7, A8, Q8, and Audi e-tron quattro 2019 - 2021 All Not Applicable Condition REVISION HISTORY Revision Date Purpose 3 - Revised header (Added MY20-21 Q7 & MY21 models) 2 02/06/2020 Revised title 1 10/11/2019 Initial publication Customer states: While driving, the seat belt and/or the Pre Sense warning appears 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 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 signal within five drive cycles, it stores DTC B101C07, and the Pre Sense Warning appears in the DIS in the assumption that a seat belt cheat device is installed. A drive cycle consists of: 1. Unlock door. Page 1 of 3 © 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. 2. Open door. 3. Close door. 4. Latch seat belt. 5. Turn on ignition and drive. 6. Park. 7. Unlatch seat belt. 8. Turn off ignition. 9. Open door. 10. Close door. 11. Lock door. Production Solution Not applicable. Service 1. Connect vehicle to ODIS Service and perform GFF. 2. If the DTC B101C07 is stored in the airbag control module/safety computer follow 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 B101C07 from static to sporadic and to turn off the Pre Sense warning in the instrument cluster. Warning: 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 owner’s manual for additional information and warnings. Note: Parts replacement does not solve this issue. Claims for replaced parts will be subject to review. Page 2 of 3 © 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. 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. ©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 Page 3 of 3 © 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.