A9123792064681_2

Technical Service Bulletin
91 Audi Phone Box: wireless charging doesn't work
91 23 79 2064681/2 March 8, 2023. Supersedes Technical Service Bulletin Group 91 number 21-38 dated
October 1, 2021, for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi Models
2019 – 2023
All
Audi Phone Box with wireless charging
Condition
REVISION HISTORY
Revision
Date
Purpose
2
-
Revised header (Added model years and models)
Revised service (Added info about MagSafe charging used in Apple devices)
1
10/01/2021
Initial publication
Customer states:
That the mobile device sometimes cannot be charged wirelessly. One of the following three situations is
described:
• The phone gets very hot while charging and charging is canceled and/or the phone goes into thermal
protection mode.
• The phone is not charged and the following message is shown on the MMI: “The device cannot be charged as
there is another object in the charging cradle.”
• The phone does not start charging after it has been placed in the charging cradle.
The mobile device supports wireless charging or the customer uses a charging cover that enables wireless
charging.
Technical Background
Technical limitations of the wireless charging standard.
Production Solution
Not Applicable
Page 1 of 3
© 2023 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 Service Bulletin
Service
The wireless charging feature can be affected by multiple external factors.
Please check whether the concern can still be reproduced under normal conditions.
To do so, please check the following items:
• Make sure that wireless charging is activated in the MMI settings (please refer to the vehicle’s owner’s
manual).
• Ensure that there are no objects other than the mobile phone in the charging cradle.
• If the phone is in a case or has a back cover, please check if the phone charges when put in the cradle without
a case or cover.
• The position of the phone has a significant effect on the charging characteristics. Please ensure that the phone
is centered in the charging cradle when performing the tests.
Background: The charging cradle uses three integrated charging coils, only one of which is actively used at
any one time. With smaller devices, more energy is lost and more heat is produced if the device is significantly
misaligned from the center position.
• The device may become very hot during wireless charging, especially if the phone’s battery is low when placed
on the charging pad. Therefore, check whether the concern can still be reproduced when the battery level is
above 80%.
• Intensive app use during wireless charging can cause the device to become very hot. Please check if the
concern can still be reproduced when all apps are closed and stopped, including CarPlay or AndroidAuto.
If intensive use is required, we recommend using a USB connection instead.
• It can take up to 60 seconds for charging to start.
• Please also check if the charger works when a different phone is used.
If the concerns persist, continue the repair process using Guided Fault Finding.
For Apple iPhone generations 12, 13 and 14:
These devices are equipped with MagSafe charging technology. This technology is not 100% compatible with the
industry standard Qi system used in the vehicle. This can lead to higher power losses and more heat generation
compared to other Qi-certified, devices, in particular during intense use while charging. This can lead to
temporary restrictions in the phone’s functionality as well as the phone entering thermal protection mode and
shutting off. Please explain that this behavior is normal and caused by the phone, not the vehicle. Do not replace
parts as that will not resolve the customer complaint.
Page 2 of 3
© 2023 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 Service Bulletin
Warranty
This TSB is informational only and not applicable to any Audi warranty.
Additional Information
All part and service references provided in this TSB (2064681) 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.
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.
Page 3 of 3
© 2023 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.