A8524272072609_1

Technical Service Bulletin
85 Whistling noise in vehicle interior when HVAC blower is active
85 24 27 2072609/1 January 4, 2024.
Model(s)
Year
VIN Range
Vehicle-Specific Equipment
Q8 e-tron, and
Q8 Sportback etron
2024 – 2025
All
Not Applicable
Condition
Customer states:
A whistling noise can be heard in the cabin when the HVAC blower is active.
Workshop findings:
The symptom is replicable at any blower fan speed. The sound can be detected specifically on the front right side
near the glove compartment.
Technical Background
The cover for the dust and pollen filter is not fully engaged into the air intake housing.
Production Solution
Not applicable.
Service
© 2023 Audi of America, Inc.
Internal
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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
1. Check the dust and pollen filter
cover. It may not be fully
engaged in the air intake
housing. Figure 1 shows a visible
gap in the cover. This gap
causes a whistle type noise
during HVAC blower operation.
Figure 1. Cover for the dust and pollen filter not fully engaged.
2. The cause of the incomplete
fitment is interference between
the interior wiring harness and
the cover. Remove the dust and
pollen filter cover. Figure 2
shows the harness routing
preventing proper clearance for
complete cover installation into
the air intake housing.
Figure 2. Interior wiring harness impingement into the dust and
pollen filter cover mating surface to the air intake housing.
3. Press the interior wiring harness away from the dust and pollen filter opening. Then install the cover
until it is completely engaged in the air intake housing and fully seated. It is not necessary to replace
the dust and pollen filter in these cases. Run the HVAC system briefly and ensure that the whistle
noise is eliminated.
Warranty
Claim Type:
110 Up to 48 Months/50,000 Miles.
G10 for CPO Covered Vehicles – Verify Owner.
© 2023 Audi of America, Inc.
Internal
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
If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.
Service Number:
8522
Damage Code:
0020
Labor Operations:
Reposition interior wiring harness and re-fit dust 8515 4999
and pollen filter cover
30 TU
Diagnostic Time:
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
Claim Comment:
As per TSB 2072609/1
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.
Additional Information
All part and service references provided in this TSB (2072609) 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.
©2024 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.