A4723252055646_5
Service Bulletin Details
Public Details for: A4723252055646_5
This bulletin provides information regarding when the brake pedal is hard when attempting to start the vehicle.
- 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 -
Models from 2021
Models from 2020
Models from 2019
| 2019 AUDI A4 |
| 2019 AUDI A5 |
| 2019 AUDI A5 CABRIOLET |
| 2019 AUDI Q5 |
| 2019 AUDI Q7 |
| 2019 AUDI Q8 |
| 2019 AUDI RS5 |
| 2019 AUDI S4 |
| 2019 AUDI S5 |
| 2019 AUDI S5 CABRIOLET |
| 2019 AUDI SQ5 |
Models from 2018
| 2018 AUDI A4 |
| 2018 AUDI A5 |
| 2018 AUDI A5 CABRIOLET |
| 2018 AUDI Q5 |
| 2018 AUDI Q7 |
| 2018 AUDI RS5 |
| 2018 AUDI S4 |
| 2018 AUDI S5 |
| 2018 AUDI S5 CABRIOLET |
| 2018 AUDI SQ5 |
Models from 2017
| 2017 AUDI A4 |
| 2017 AUDI Q7 |
Technical Service Bulletin 47 Hard brake pedal while attempting to start the vehicle 47 23 25 2055646/5 November 22, 2023. Supersedes Technical Service Bulletin Group 47 number 22-16 dated August 11, 2022 for reasons listed below. Model(s) Year Q7 2017 – 2023 A4, and A4 allroad 2017 – 2021 S4, A5, A6 Cabriolet, A5 Sportback, S5, S5 Cabriolet, S5 Sportback, Q5, and SQ5 2018 – 2021 VIN Range Vehicle-Specific Equipment All Not Applicable 2018 – 2019 RS 5 2021 2019 RS 5 Sportback 2021 Q8 2019 – 2023 Q5 e quattro 2020 – 2021 SQ7, SQ8, and RS Q8 2020 – 2023 A6, A6 allroad, S6, RS 6 Avant, A7, A7 e quattro, S7, RS 7, Q5 Sportback, and SQ5 Sportback 2021 Condition REVISION HISTORY Revision Date Purpose 5 - Revised header (Updated Model Year) Revised Warranty (Updated table) 4 08/11/2023 Revised header (Added Model Years) Revised Service (Updated procedure) © 2023 Audi of America, Inc. Internal Page 1 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 3 06/09/2022 Revised Warranty (Updated table) Customer states: • After a short stationary period, the vehicle sporadically does not start and there is a hard brake pedal concern. Technical Background Due to dirt particles in the non-return valve in the vacuum hose for the brake servo, the vacuum in the brake servo cannot be held on a parked vehicle. When starting the vehicle the usual brake force is not enough to get the start authorization of the brake light switch. Normally, a vacuum of 600 to 950 mbar is reached. Depending on the parking position (slope) or the user behavior the vehicle is parked with a small vacuum within 12 hours the vacuum may drop by up to 400 mbar. Production Solution Not applicable. Service Proceed as follows: • Check the following components for possible damages: vacuum hose; sensor G608; connectors, seals, valves. • Check for leaks according to Elsa >> Brake System >> 47 Hydraulic Components >> Vacuum System. • Check for small cracks in the vacuum hose or in the connection points between check valves. • If damages/cracks/leaks are found: Replace the necessary components according to: Elsa Repair Manual, Elsa >> Brake System >> 47 Hydraulic Components >> Vacuum System. 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: 4777 Damage Code: 0010 Labor Operations: Vacuum hose remove + reinstall © 2023 Audi of America, Inc. Internal 4777 1999 10 TU 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 Diagnostic Time: Claim Comment: Brace remove + reinstall (Only if installed in 4086 1999 the vehicle) 50 TU Cowl panel trim remove + reinstall 6644 19XX See SRT with associated operations GFF No allowance 0 TU Road test prior to the service procedure No allowance 0 TU Road test after the service procedure No allowance 0 TU As per TSB 2055646/5 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. Required Parts and Tools Part Number Part Description Quantity See ETKA Vacuum hose with non-return valve and pressure sensor 01 See ETKA Fasteners, Bolts, Nuts, and Screws as needed per the Repair Manual See ETKA/ELSA Additional Information More information on this system can be found in the following resources: • Elsa: Brake System >> 47 Hydraulic Components >> Vacuum System. All parts and service references provided in this TSB (2055646) are subject to change and/or removal. ©2023 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. © 2023 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.