A4823532065978_3

Technical Service Bulletin
48 Steering wheel heating does not heat up sufficiently
48 23 53 2065978/3 August 4, 2023. Supersedes Technical Service Bulletin Group 48 number 22-34 dated July
19, 2022, for reasons listed below.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
All Audi Models
2020 – 2025
All
Not Applicable
Condition
REVISION HISTORY
Revision
Date
Purpose
3
-
Revised header (Added Model Years)
2
07/19/2022
Revised Technical Background (Added Note)
1
02/01/2022
Initial publication
Customer states:
• The steering wheel does not heat up.
• The steering wheel does not heat up sufficiently.
• The steering wheel heats up unevenly.
• It takes a long time for the steering wheel to heat up.
Workshop findings:
There are no DTCs related to the topic.
Technical Background
The surface temperature of the leather may be lower in the vicinity of the spokes compared to the rest of the
steering wheel, as some of the heat dissipates into the spokes.
The surface of the top part of the steering wheel (12 o’clock position) may also be heated up by sunlight, resulting
in a clearly noticeable temperature difference. If the driver holds the steering wheel at the 9 and 3 o’clock
positions, the leather will be warmed up by their hands. If the driver then touches the steering wheel at the 12 and
6 o’clock positions, it will be cooler at these locations since they have not been warmed up by the driver’s hands.
The NTC temperature sensor fitted in the foam underneath the cover can also cause the complaint to be
perceived differently.
When the desired surface temperature of 30°C (86° F) has been reached, the measured value for the sensor is
34°C (93° F), as this is the temperature underneath the cover.
© 2023 Audi of America, Inc.
Page 1 of 2
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
Note:
• Parts replacement does not solve this issue. Claims for replaced parts will be subject to review.
If a critical case is identified, open a TAC case for further instructions.
Production Solution
Not applicable.
Service
Not applicable.
Warranty
This TSB is informational only and not applicable to any Audi Warranty.
Additional Information
All part and service references provided in this TSB (2065978) 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.
© 2023 Audi of America, Inc.
Page 2 of 2
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.