A5721742058452_2
Service Bulletin Details
Public Details for: A5721742058452_2
This bulletin contains repair instructions for when the rear window defog button will light up and then turn off.
Models from 9999
| 9999 AUDI AUDI |
Models from 2021
| 2021 AUDI A4 |
| 2021 AUDI A5 |
| 2021 AUDI A5 CABRIOLET |
| 2021 AUDI E-TRON |
| 2021 AUDI Q7 |
| 2021 AUDI Q8 |
| 2021 AUDI RS Q8 |
| 2021 AUDI RS5 |
| 2021 AUDI S4 |
| 2021 AUDI S5 |
| 2021 AUDI S5 CABRIOLET |
| 2021 AUDI SQ7 |
| 2021 AUDI SQ8 |
Models from 2020
| 2020 AUDI A4 |
| 2020 AUDI A5 |
| 2020 AUDI A5 CABRIOLET |
| 2020 AUDI E-TRON |
| 2020 AUDI Q7 |
| 2020 AUDI Q8 |
| 2020 AUDI RS Q8 |
| 2020 AUDI S4 |
| 2020 AUDI S5 |
| 2020 AUDI S5 CABRIOLET |
| 2020 AUDI SQ7 |
| 2020 AUDI SQ8 |
Models from 2019
| 2019 AUDI A4 |
| 2019 AUDI A5 |
| 2019 AUDI A5 CABRIOLET |
| 2019 AUDI E-TRON |
| 2019 AUDI Q7 |
| 2019 AUDI Q8 |
| 2019 AUDI RS5 |
| 2019 AUDI S4 |
| 2019 AUDI S5 |
| 2019 AUDI S5 CABRIOLET |
Rear window defogger is non-operational 57 21 74 2058452/2 February 26, 2021. Supersedes Technical Service Bulletin Group 57 number 20-65 dated February 12, 2020 for reasons listed below. Model(s) Year VIN Range Vehicle-Specific Equipment A4, A4 allroad, S4, A5, A5 Cabriolet, A5 Sportback, S5, S5 Cabriolet, S5 Sportback, Q7, SQ7, Q8, and Audi e-tron quattro 2019 - 2021 All Not Applicable SQ8, RS Q8, and Audi e-tron Sportback 2020 - 2021 All Not Applicable RS 5, RS 5 Cabriolet, and RS 5 Sportback 2019, 2021 All Not Applicable Condition REVISION HISTORY Revision Date Purpose 2 - Revised header (Added model year and updated applicable vehicles) 1 02/12/2020 Initial publication Customer states: The rear window defog button will light up for a second when pressed, then immediately turn off. Workshop findings: No DTCs are stored. 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. Technical Background The control module is locked in a loop and needs to be reset. Production Solution Software is being developed. Service 1. Try to reproduce the customer’s concern. If the concern cannot be duplicated, then this TSB does not apply. Tip: For the rear window defog feature to operate, ambient temperature must be less than 95°F (35°C) and the engine is running. 2. With ODIS perform the rear window defog output test, located in the comfort system central control module, J393 (address word 0046). Make sure the output test runs for at least 30 seconds. 3. Right click on the 0046 Control Module and select “Guided Functions” (Figure 1). Figure 1. Selecting Guided Functions. 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. 4. In Guided Functions for the 0046 Control Module select the “Output diagnostic test mode (DTM)” and click “Perform” (Figure 2). Figure 2. Select the Output diagnostic test mode (DTM). 5. In the output DTM test plan, located the rear window defogger and click the applicable button (Figure 3). Allow the test to run for 30 seconds before ending. Figure 3. Select the appropriate button and allow test to run for 30 seconds before ending. 6. After completion of the output test, recheck the function of the rear window defog button. 7. If the defog button fails to operate properly, continue diagnostics outside of this TSB. 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. 8. Performing the output test will create DTCs in the comfort system central control module, J393 (address word 0046). Make sure to clear DTCs from the comfort system central control module before performing further diagnostics. 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: 5789 Damage Code: 0039 Diagnostic Time: GFF 0150 0000 Time stated on the diagnostic protocol (Max 60 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 #2058452/2 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 part and service references provided in this TSB (2058452) 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 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.