A8720122061660_1
Service Bulletin Details
Public Details for: A8720122061660_1
This bulletin contains repair instructions for when the air conditioning does not cool and dtc B16A284 is stored.
Models from 2021
2021 AUDI A8 |
2021 AUDI S8 |
Models from 2020
2020 AUDI A8 |
2020 AUDI S8 |
87 Air conditioning does not cool, DTC B16A284 is stored in the thermal management control module 87 20 12 2061660/1 December 15, 2020. Model(s) Year VIN Range Vehicle-Specific Equipment A8, S8 2020 - 2021 All Not Applicable Condition Customer states: When the air conditioning system is activated the system does not generate cold air. It is not possible to activate the air conditioning system using the HVAC controls. The A/C button does not respond when pressed. Workshop findings: The air conditioning circuit head pressures are checked and are confirmed low. The refrigerant in the circuit is recovered and found to be very low or empty. The following DTC may be stored in the thermal management control module, J1024 (address word 00C5): DTC B16A284 (Refrigerant pressure for cooling passenger compartment Signal too low). Technical Background A refrigerant leak test reveals a leak at the bolted connections of the refrigerant line with inner heat exchanger that connects the main circuit to the rear evaporator. When the line is removed an incorrect and/or damaged O-ring seal is found (Figure 1). Figure 1. Damaged refrigerant line O-ring seal. Page 1 of 5 © 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. The refrigerant line with inner heat exchanger is located inside the left front wheel housing liner (Figure 2). Figure 2. Location of the refrigerant line with inner heat exchanger that connects the main refrigerant circuit to the rear evaporator Production Solution The O-ring seal type and installation procedure improved at the refrigerant line supplier. Service 1. Perform an air conditioning circuit leak test diagnosis using either contrast dye or by pressurizing the circuit with compressed nitrogen and investigating the leak location with a soapy water solution at each end of this refrigerant line. Provided no damage to the mating sections of the line are found replace the O-ring seals on either end of the line. If a leak is not found at either end of this refrigerant line, continue with the leak diagnosis and repair. 2. Please take photos of the customer concern and upload them into DOC-IT with the repair order. Photos should: Have a date stamp and VIN reference. Be taken in focus and with sufficient light. Where it is appropriate, mark the affected place for a reference to the concern for analysis. Page 2 of 5 © 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 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: 8744 Damage Code: 0050 Labor Operations: Refrigerant drain and fill (with contrast) Diagnostic Time: Claim Comment: 8703 1700 See SRT with associated operations Front wheel housing liner remove and reinstall 6616 1901 See SRT with associated operations Check air conditioning system for leaks 8701 0150 See SRT with associated operations Subsequent evacuation and recharge after leak found at line 8703 9999 40 TU Refrigerant line with inner heat exchanger remove, replace seal rings and reinstall line 8744 9999 30 TU GFF 0150 0000 Time stated on the diagnostic protocol (Max 30 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 #2061660/1 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 Page 3 of 5 © 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. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Part Number Part Description Quantity See ETKA Fasteners, Bolts, Nuts, and Screws as needed per the Repair Manual See ETKA/ELSA 4E0260749B 02 Seal ring 3D0260749C 01 Seal ring Tool Number Tool Description NITROKITG Automotive A/C Nitrogen Leak Test Kit VAS 6160/VAS 6150 VAS tester with current version of ODIS (Windows 10) Page 4 of 5 © 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. Additional Information All parts and service references provided in this TSB (2061660) are subject to change and/or removal. ©2020 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 5 of 5 © 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.